The water came over the sand

On Thursday night, Oct. 8, higher-than-normal surf and elevated ocean levels pushed seawater into streets on the Balboa Peninsula (City of Newport Beach, Oct. 9). Friday morning’s tide came in 20 inches higher than predicted, the city’s utilities director told ABC7, and he estimated 15 to 20 blocks of street flooding (ABC7). Floodwater ran down Balboa Boulevard and neighboring streets (ABC News), and several cars got stuck and had to be towed (NBC Los Angeles). High tides flooded peninsula streets again on Saturday (Los Angeles Times).

City Manager Seimone Jurjis, acting as director of emergency services, declared a local emergency on Friday so the city could obtain additional resources. Crews rebuilt beach berms, opened tide valves and ran pumps (City of Newport Beach, Oct. 9). By Saturday the city had closed Newport Pier, Balboa Pier and the Wedge, and was asking people to stay off the protective berms to preserve their structural integrity; city beaches stayed open (City of Newport Beach, Oct. 10; Oct. 11). By Sunday the Balboa Pier parking lot was closed as well.

Rachel itself was gone by Sunday. The National Hurricane Center issued its last advisory at 8 a.m. Pacific time, placing the storm’s remnants over the desert Southwest. It warned, however, that hazardous coastal conditions would continue for the next few days (NHC Advisory 58). On Sunday, the Los Angeles Times reported that streets along the Balboa Peninsula were dry while dozers and excavators reinforced the berms; up the coast, waves were still damaging homes on the Long Beach peninsula (Los Angeles Times). That was a news observation, not an official or block-by-block assessment of the whole peninsula. As of Sunday, the city had issued no statement on how the berms performed and had not released a damage assessment.

The image that lingers is heavy equipment pushing sand into a temporary wall in front of some of the most valuable residential land in California. The city itself says its measures “cannot eliminate all flood risks” (City of Newport Beach, Oct. 9). That raises a more lasting question: what does this physical exposure mean for the value of the real estate behind the berm?

LedgeX Research · Figure 1

One coastline, different exposures

FEMA’s modeled flood zones, the two reaches of the ocean shore, a century of engineering and what officials closed in October 2026. Select any feature to see its evidence and sources.

Newport Beach coastal map: FEMA flood zones, coastline orientation, engineering history and October 2026 responseSchematic map of the Newport Beach ocean shoreline from the Santa Ana River to the harbor entrance. A full text list of every mapped feature and its sources follows the map.FEMA zone A (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AO (modeled)FEMA zone AE (modeled)FEMA zone AE, BFE 8 ft (modeled)FEMA zone AE (modeled)FEMA zone VE, BFE 12 ft (modeled)FEMA zone VE, BFE 18 ft (modeled)FEMA zone VE, BFE 21 ft (modeled)FEMA zone VE, BFE 12 ft (modeled)FEMA zone VE, BFE 13 ft (modeled)FEMA zone VE, BFE 15 ft (modeled)FEMA zone VE, BFE 18 ft (modeled)FEMA zone VE, BFE 14 ft (modeled)FEMA zone VE, BFE 16 ft (modeled)Pacific Coast HighwayPacific Coast HighwayPacific Coast HighwayWest Balboa BoulevardWest Balboa BoulevardWest Balboa BoulevardEast Balboa BoulevardEast Balboa BoulevardEast Balboa BoulevardNewport BoulevardNewport BoulevardSanta Ana RiverNewport PierBalboa Pier26th28th36th43rd46th52nd56thMainMLower Newport BayBalboa IslandLido IsleNewport PierBalboa PierWEST NEWPORTBALBOA PENINSULAWEST-FACING · reported wideningSOUTH-FACING · reported narrowing1919–32 · ~1.6M cu yd1934–35 · ~5.6M cu yd1934–35 · ~1.9M cu yd1968–73 · 8 groins (positions not mapped)1995 plan · ~140k cu yd2023 plan · ~100k cu yd01 kmNBase data © OpenStreetMap contributors (ODbL) · Flood zones: FEMA NFHL, retrieved Oct. 12, 2026

Modeled · FEMA

  • VE: coastal high hazard, wave action
  • AE: 1%-annual-chance flood, BFE set
  • AO: shallow flooding
  • A: 1% flood, no BFE

Documented history · sources

  • Documented, located by street (approximate)
  • Planned or reported only
  • Point event (approximate)

Observed · October 2026

  • Official closure (City)
  • Official closure, approximate location
  • Flood extent: not mapped. No official extent has been published.

How to read this map. Shaded zones are FEMA’s regulatory model of a 1%-annual-chance flood. They are not a record of what flooded in October 2026, and this simplified snapshot cannot tell you a property’s zone: use the official FEMA Flood Map Service Center or the City’s flood map viewer. Lines offshore are schematic “lanes”: they show which stretch of coast a source describes, placed between street ends, piers and jetties named in that source. They are not footprints. Individual groins, parcels and historical shorelines are deliberately not drawn.

Coastline, piers, jetties, river, roads and labels: © OpenStreetMap contributors (ODbL). Flood zones: FEMA National Flood Hazard Layer, retrieved Oct. 12, 2026; FIRM panels effective March 21, 2019 (two panels Dec. 3, 2009). Bay shorelines are not drawn: we could not obtain a reliable water polygon. Editorial layers and design: LedgeX Research. Download every mapped geometry (JSON).

Every mapped feature, its evidence and sources
Every feature on the map, with its sources
LayerFeatureWhenEvidenceLocation basisSources
OrientationWest-facing reach: Santa Ana River to Newport Pier
A student-led UC Irvine analysis of aerial photographs from 1927 to 2001 reports that the west-facing beaches between the Santa Ana River and Newport Pier have widened, and credits the groin field with reversing their losses. This reach holds the federal groin field and most documented sand placement.
1927–2001 (aerial photos)ReportedReach endpoints are the OSM river mouth and Newport Pier.S13 S37
OrientationSouth-facing reach: Newport Pier to the harbor entrance
The same analysis reports that the south-facing beaches between Newport Pier and the harbor entrance have narrowed, with a trend that looks similar before and after the groins were built. As of 1980 the Army Corps reported that no federal participation in shore-protection construction had been required between Newport Pier and the harbor entrance. Reported October 2026 street flooding was concentrated on this side. LedgeX does not claim the history caused the flooding.
1927–2001 (aerial photos); 1980 statusReportedReach endpoints are Newport Pier and the west jetty (OSM).S13 S7 S37
Engineering1919–32: about 1.6 million cu yd of dredged material
The 1940 Army Corps report records that between 1919 and 1932 about 1,600,000 cubic yards of dredged material had been deposited on the beach between the harbor entrance and Newport Pier.
1919–32VerifiedStretch per source wording; placement footprint unknown.S9 S8
Engineering1934–35 harbor project: about 5.6 million cu yd placed
The 1940 Army Corps report to Congress records about 5.6 million cubic yards of dredged material deposited between the west jetty at the harbor entrance and Newport Pier during the 1934–35 harbor project. A 1935 survey found 5,607,400 cubic yards of added material there.
1934–35VerifiedStretch per source wording; placement footprint unknown.S9 S8
Engineering1934–35 harbor project: about 1.9 million cu yd placed
The same report records about 1.9 million cubic yards deposited between Newport Pier and 46th Street, the westerly limit of the discharge.
1934–35Verified46th St position is the OSM street vertex nearest the shore.S9 S8
EngineeringFederal groin field: eight groins, about 28th to 56th Street
Under a project Congress authorized in 1962, the Corps built eight groins between about 28th and 56th Streets from 1968 to 1973 and placed about 2 million cubic yards of sand. Construction cost about $2.614 million, of which $1.751 million (67%) was federal. A groin is a rock wall running out into the surf that traps sand moving along the shore.
1968–73VerifiedZone endpoints follow the sources ('about 28th to 56th Street').S7 S8
Engineering1995 environmental assessment: about 140,000 cu yd planned
A Corps environmental assessment proposed transporting approximately 140,000 cubic yards to West Newport Beach between 56th and 28th Streets, with construction between October 1995 and March 1996.
Oct. 1995–Mar. 1996 (planned)PlannedStretch per notice wording.S38
Engineering2023 project: about 100,000 cu yd planned for 36th–52nd Street
Local reporting described the Army Corps using about 100,000 cubic yards of sand that had accumulated in far West Newport to replenish beaches between 52nd and 36th Streets, alongside a separate 1.2 million cubic yard regional dredge off Surfside–Sunset. A CEQA attachment lists 71,000 cubic yards for 2023–24. The discrepancy is unresolved.
2023–24PlannedStretch per reported wording.S20 S21
Past erosionFoot of 26th Street washed away
A Los Angeles Times archive photograph, published with an article dated Sept. 7, 1934, shows a dump truck dropping rock where the foot of 26th Street had been washed away by tides.
Sept. 1934VerifiedStreet-end position from OSM; approximate.S10
Past erosionShoreline near 36th Street moved up to 150 ft
Engineering literature summarized by Wiegel reports the shoreline near 36th Street moved landward by as much as 150 feet in 1934.
1934SecondhandStreet-end position from OSM; approximate.S8
Past erosionBeach edge reached the residential property line, 36th–43rd Street
After tropical-storm waves in August 1965 an erosion scarp was photographed near 37th Street and sandbags were placed near 38th Street, a few feet in front of beach homes. In 1966 and again in 1967 the berm edge receded to the residential property line between 36th and 43rd Streets. City Council Resolution 6620 (1967), citing severe erosion that July, authorized wooden groins at a cost not to exceed $25,000 without advertising for bids.
1965–67SecondhandStreet-end positions from OSM; approximate.S8 S12
Oct 2026Newport Pier closed
The City listed Newport Pier among closed facilities.
Listed as of Oct. 11, 2026OfficialPier outline from OSM.S3 S37
Oct 2026Balboa Pier closed
The City listed Balboa Pier among closed facilities.
Listed as of Oct. 11, 2026OfficialPier outline from OSM.S3 S37
Oct 2026The Wedge closed (jetty to M Street)
The City closed the Wedge, described as the beach from the jetty to M Street, and asked the public to stay off the berms so they would keep their shape.
Listed as of Oct. 11, 2026OfficialM St position from OSM; approximate.S3
Oct 2026Balboa Pier parking lot closed
The City listed the Balboa Pier parking lot among closures.
Listed as of Oct. 11, 2026OfficialAPPROXIMATE: marker placed landward of the pier base; the lot was not geocoded.S3

Deliberately not mapped

  • Observed October 2026 flood extent. No official flood extent has been published. A city utilities official estimated 15 to 20 blocks of street flooding on Friday, and news reports describe floodwater on Balboa Boulevard and neighboring streets, but not a block-by-block extent. S1 S44 S45
  • Tide valves and storm pumps. Reported as 86 tidal valves and 18 pumps for streets near the harbor; locations are not published in the sources we found. S16
  • Sunday berm reinforcement. Reported along the Balboa Peninsula beach without a specific location. S46
  • Individual groin positions. No reliable public coordinates found; shown only as the documented zone (about 28th–56th St). S7 S8
  • Parcels, historical shorelines, building footprints. Out of scope for a defensible public-data map.

What a coastal buyer is actually purchasing

A coastal price tag bundles several things together. There is the land itself, which on the peninsula is scarce and often worth more than the house on it. There is the structure. And there is a set of amenities that exist only because of location: the view, the walk to the sand, the exclusivity of a short list of oceanfront lots.

Less visibly, the price also includes expectations. Buyers are betting that the beach will still be wide, the streets will still drain, insurance will remain available at a tolerable price, and someone — usually a public agency — will keep paying to hold the shoreline roughly where it is.

Desirability and risk come from the same source. The ocean that creates the premium also creates the exposure. Researchers who study beach economics have found that beach width itself is capitalized into property prices. A North Carolina study found the effect was nearly five times larger than a standard estimate once the authors accounted for the fact that nourishment decisions also shape beach width (Gopalakrishnan et al., 2011). Put simply, part of what an oceanfront buyer pays for is sand that someone else may have to replace.

A shoreline that has always been maintained

In Newport Beach, that "someone else" has a long paper trail.

The 1930s beach was partly built from dredged sediment. A 1940 Army Corps of Engineers report to Congress records that between 1919 and 1932 about 1.6 million cubic yards of dredged material was deposited on the beach between the harbor entrance and Newport Pier. During the 1934–35 harbor project, roughly 5.6 million more cubic yards went onto the same stretch, and 1.9 million cubic yards between the pier and 46th Street (H. Doc. 76-637, ¶¶ 31, 68–69, digitized by the Library of Congress; also summarized in UC Berkeley’s 2009 coastal engineering review).

Damage followed anyway. In September 1934 the Los Angeles Times photographed a dump truck dropping rock where the foot of 26th Street had washed away (UCLA archive via Calisphere).

The 1960s brought renewed loss. After tropical storm waves in August 1965, sandbags were stacked in front of West Newport homes. By 1967 the edge of the beach had receded to the residential property line between 36th and 43rd Streets. The City Council authorized up to $25,000 for emergency wooden groins without competitive bidding (Resolution 6620).

Federal construction came next. Under a project Congress authorized in 1962, the Corps built eight groins between about 28th and 56th Streets from 1968 to 1973 and placed about 2 million cubic yards of sand. A groin is a rock wall running out into the surf that traps sand moving along the shore. Construction cost about $2.6 million, of which the federal government paid 67 percent (USACE, 1980). Regional nourishment upcoast continued in multi-year cycles, lapsed for roughly a decade, and resumed in 2023.

The rationale for federal money matters. The Corps judged that Orange County's beach erosion had been caused largely by public works: upstream flood-control projects, the Los Angeles–Long Beach breakwaters, and the Navy's wartime breakwaters at Anaheim Bay. The higher federal share was framed as equity, not charity. It also came with a condition: local sponsors had to keep the shore in public ownership and open to public use.

The protection is not uniform. A student-led UC Irvine analysis of aerial photographs from 1927 to 2001 found that the west-facing beaches between the Santa Ana River and Newport Pier have widened, and credits the groin field with reversing their losses. The south-facing Balboa side has narrowed, and its trend looks much the same before and after the groins were built (UC Irvine). This week's reported flooding was concentrated on that Balboa side. We do not claim the history caused the flooding. We note only that "Newport oceanfront" is not one uniform exposure.

LedgeX Research · Figure 2

A century of change on two different shores

Storm damage, engineering and public money, 1919–2026. Each event is tagged with the stretch of coast it happened on: most interventions were on the west-facing reach, while October 2026’s reported flooding was on the Balboa side.

  • West Newport west-facing, Santa Ana River to Newport Pier
  • Balboa side south-facing, Newport Pier to harbor entrance
  • Newport ocean beach, both sides
  • Upcoast / regional not Newport
  1. 1919–32Balboa sideHarbor dredging builds out the beach east of Newport Pier

    About 1.6 million cubic yards of dredged material was deposited on the beach between the harbor entrance and Newport Pier.

    Engineering intervention Verified (1940 report ¶ 31.) Sources: S9 S8

  2. Sept. 1934West NewportFoot of 26th Street washes away

    A Los Angeles Times archive photograph, published with a Sept. 7, 1934 article, shows a dump truck dropping rock where the foot of 26th Street had washed away. Engineering literature reports a fall 1934 storm moved the shoreline near 36th Street landward by as much as 150 feet.

    Storm damageEngineering intervention Verified (26th St: primary photo record. 36th St: secondhand.) Sources: S10 S8

  3. 1934–35Newport ocean beach, both sidesHarbor project places millions of cubic yards on the beach

    The 1940 Corps report records about 5.6 million cubic yards between the west jetty and Newport Pier (¶ 68), and 1.9 million between the pier and 46th Street (¶ 69). Another account summarized by Wiegel gives 7.4 million for the project.

    Engineering interventionPublic investment / decision Verified Sources: S9 S8

  4. 1940Upcoast / regionalBeach Erosion Study sent to Congress

    The Corps' Orange County beach erosion study (H. Doc. 76-637) records the 1919–35 placements and concludes that natural sand supply between 30th and 50th Streets had been insufficient to hold the widened beach. It is digitized by the Library of Congress.

    Public investment / decision Verified Sources: S9

  5. 1962Upcoast / regionalCongress authorizes regional shore protection

    The River and Harbor Act of 1962 authorized beach erosion control from the San Gabriel River to Newport Bay, the basis for the later West Newport work.

    Public investment / decision Verified Sources: S7

  6. 1964Upcoast / regionalSurfside–Sunset feeder beach begins

    4.0 million cubic yards placed upcoast at Surfside–Sunset, the start of a regional feeder program. Not a Newport placement.

    Engineering interventionPublic investment / decision Secondhand Sources: S8

  7. Aug. 1965West NewportTropical-storm waves cut a scarp near 37th Street

    An erosion scarp was photographed near 37th Street and sandbags were placed near 38th Street. Sand was moved from the Balboa Peninsula to West Newport in 1965–67.

    Storm damage Secondhand Sources: S8

  8. 1966–67West NewportBeach edge reaches property line; emergency groins

    In 1966 and again in 1967 the berm edge receded to the residential property line between 36th and 43rd Streets. Resolution 6620, citing severe erosion in July 1967, authorized wooden groins at a cost not to exceed $25,000 without advertising for bids.

    Storm damagePublic investment / decision Verified (Resolution text verified; erosion detail secondhand (Wiegel citing Spencer).) Sources: S12 S8

  9. 1968–73West NewportEight federal groins built, 28th–56th Street

    The Corps built eight groins and placed about 2 million cubic yards of sand. Cost about $2.614 million, 67% federal. The Corps justified the higher federal share as equity: erosion largely caused by public works. Local sponsors had to keep the shore publicly owned and open.

    Engineering interventionPublic investment / decision Verified Sources: S7 S8

  10. 1980Balboa sideCorps equity study: no federal works on the Balboa side

    The Corps reported that no federal participation in shore-protection construction had been required between Newport Pier and the harbor entrance.

    Public investment / decision Verified (Status as of 1980.) Sources: S7

  11. 1992West Newport1.3 million cu yd placed offshore

    Sand from the Santa Ana River was placed offshore as a nearshore mound rather than on the beach.

    Engineering intervention Secondhand Sources: S8

  12. 1995–96West NewportNourishment proposed for 56th–28th Street

    A Corps environmental assessment proposed about 140,000 cubic yards for West Newport. Actual placement not confirmed in our sources.

    Engineering interventionPublic investment / decision Planned Sources: S38

  13. 2009West NewportStage 12: sand moved from near the river mouth

    About 100,000 cubic yards moved by scraper from the beach near the Santa Ana River mouth.

    Engineering intervention Secondhand Sources: S8

  14. July 2020Balboa sideWaves top the sand near Balboa Pier; a larger berm works better

    Waves crashed over the sand at Balboa Pier into parking lots and streets; the city then enlarged its berm, which officials said worked a lot better.

    Storm damageEngineering intervention Reported Sources: S18

  15. 2021Upcoast / regionalRegional nourishment lapsed for more than a decade

    Reporting described the regional program as lapsed for more than ten years.

    Public investment / decision Reported Sources: S19

  16. 2023–24West NewportRegional nourishment resumes

    A 1.2 million cubic yard regional dredge off Surfside–Sunset was reported. Separately, about 100,000 cubic yards of sand that had accumulated in far West Newport was planned for beaches between 36th and 52nd Streets. A CEQA attachment lists 71,000 cubic yards; the discrepancy is unresolved.

    Engineering interventionPublic investment / decision Reported Sources: S20 S21

  17. Oct. 8–10, 2026Balboa sideTropical Storm Rachel: street flooding and local emergency

    Seawater pushed into Balboa Peninsula streets Thursday night. Friday morning's tide ran 20 inches above prediction, and a city official estimated 15 to 20 blocks of street flooding. High tides flooded streets again Saturday. The City declared a local emergency, rebuilt berms, opened tide valves and ran pumps.

    Storm damagePublic investment / decision Official (Onset and emergency: City. Tide and extent: city official via ABC7. Saturday: LA Times.) Sources: S1 S44 S46

  18. Oct. 10–11, 2026Balboa sideClosures; dry streets Sunday as berms are reinforced

    Newport Pier, Balboa Pier and the Wedge closed (the Balboa Pier lot by Sunday). On Sunday peninsula streets were dry while dozers and excavators reinforced the berms. No damage assessment released as of Oct. 11.

    Engineering interventionPublic investment / decision Official (Closures: City. Sunday conditions: LA Times.) Sources: S2 S3 S46

LedgeX Research · Figure 3

Reported sand placement, in cubic yards

Only quantities a source actually reports, at the year it reports them. Empty years mean no reported placement, not zero. Panels use different scales and must not be added together.

  • Harbor dredging placed on beach
  • Direct beach placement
  • Moved within Newport
  • Placed offshore (nearshore mound)
  • Planned / proposed (not confirmed placed)
  • Regional feeder (upcoast)
Reported sand placement quantities, cubic yards, by project year. Three panels with separate scales.A · Pre-war harbor dredging placed on the ocean beachcu yd02M4M6M1919–32: 1,600,000 cu yd — Harbor dredging placed on beach. From: Harbor dredging. Where: Harbor entrance to Newport Pier. Status: Verified.1.6M1919–32Harbor entrance to Newport Pier1934–35: 5,600,000 cu yd — Harbor dredging placed on beach. From: 1934–35 harbor project. Where: West jetty to Newport Pier. Status: Verified.5.6M1934–35West jetty to Newport Pier1934–35: 1,900,000 cu yd — Harbor dredging placed on beach. From: 1934–35 harbor project. Where: Newport Pier to 46th St. Status: Verified.1.9M1934–35Newport Pier to 46th StB · Newport ocean beach, 1965–2024 (West Newport unless noted)cu yd0500k1M1.5M19601970198019902000201020201965: 124,000 cu yd — Moved within Newport. From: Balboa Peninsula. Where: West Newport. Status: Secondhand.1966: 60,000 cu yd — Moved within Newport. From: Balboa Peninsula. Where: West Newport. Status: Secondhand.1967: 150,000 cu yd — Moved within Newport. From: Balboa Peninsula. Where: West Newport. Status: Secondhand.1968: 435,000 cu yd — Moved within Newport. From: Balboa Peninsula (Stage 2). Where: West Newport. Status: Secondhand.1968: 246,000 cu yd — Direct beach placement. From: Santa Ana River (Stage 2). Where: West Newport. Status: Secondhand.1969: 750,000 cu yd — Direct beach placement. From: Santa Ana River (Stage 3). Where: West Newport. Status: Secondhand.750k1970: 124,000 cu yd — Direct beach placement. From: Santa Ana River (Stage 3). Where: West Newport. Status: Secondhand.1973: 350,000 cu yd — Direct beach placement. From: Santa Ana River (Stages 4B and 5). Where: West Newport. Status: Secondhand.1992: 1,300,000 cu yd — Placed offshore (nearshore mound). From: Santa Ana River. Where: Offshore of West Newport, 5–20 ft below MLLW, between the river mouth and the groin field. Status: Secondhand.1.3M1995–96: 140,000 cu yd — Planned / proposed (not confirmed placed). From: Surfside-Sunset/West Newport project (proposed). Where: West Newport, 56th to 28th St. Status: Planned.2009: 100,000 cu yd — Moved within Newport. From: Beach near the Santa Ana River mouth (Stage 12). Where: West Newport. Status: Secondhand.2023–24: 100,000 cu yd — Planned / proposed (not confirmed placed). From: Sand accumulated in far West Newport (reported plan). Where: West Newport, 36th to 52nd St. Status: Planned.C · Upcoast regional feeder beach, Surfside–Sunset (not a Newport placement)cu yd01M2M3M4M19601970198019902000201020201964: 4,000,000 cu yd — Regional placement. From: Anaheim Bay (Stage 1). Where: Surfside–Sunset (upcoast). Status: Secondhand.1971: 2,260,000 cu yd — Regional placement. From: Anaheim Bay (Stage 4A). Where: Surfside–Sunset (upcoast). Status: Secondhand.1979: 1,644,000 cu yd — Regional placement. From: Offshore borrow (Stage 7). Where: Surfside–Sunset (upcoast). Status: Secondhand.1983: 400,000 cu yd — Regional placement. From: Naval Weapons Station channel deepening. Where: Surfside–Sunset (upcoast). Status: Secondhand.1984: 1,500,000 cu yd — Regional placement. From: Offshore borrow (Stage 8). Where: Surfside–Sunset (upcoast). Status: Secondhand.1984: 783,000 cu yd — Regional placement. From: Seal Beach NWS. Where: Surfside–Sunset (upcoast). Status: Secondhand.1989: 180,000 cu yd — Regional placement. From: NWS channel deepening. Where: Surfside–Sunset (upcoast). Status: Secondhand.1990: 1,300,000 cu yd — Regional placement. From: Offshore borrow (Stage 9). Where: Surfside–Sunset (upcoast). Status: Secondhand.1990: 522,000 cu yd — Regional placement. From: Offshore borrow (Stage 9). Where: Surfside–Sunset (upcoast). Status: Secondhand.1996–97: 1,600,000 cu yd — Regional placement. From: Offshore borrow (Stage 10). Where: Surfside–Sunset (upcoast). Status: Secondhand.2002: 2,233,000 cu yd — Regional placement. From: Stage 11. Where: Surfside–Sunset (upcoast). Status: Secondhand.2009: 1,000,000 cu yd — Regional placement. From: Offshore borrow (Stage 12). Where: Surfside–Sunset (upcoast). Status: Secondhand.2009*: 250,000 cu yd — Regional placement. From: Offshore borrow (Stage 12; listed without a separate date). Where: Surfside–Sunset (upcoast). Status: Secondhand.2009*: 250,000 cu yd — Regional placement. From: Offshore borrow (Stage 12; listed without a separate date). Where: Surfside–Sunset (upcoast). Status: Secondhand.2023: 1,200,000 cu yd — Regional placement. From: Regional project (reported). Where: Surfside–Sunset (upcoast). Status: Reported.
Data table: every reported quantity (cubic yards)
YearCu ydTypeSand fromWhereEvidenceSource
1919–321,600,000Harbor dredging placed on beachHarbor dredgingHarbor entrance to Newport Pier — 1940 report ¶ 31. Wiegel (2009) quotes another account giving 1916–32 'along the beach'.VerifiedS9 S8
1934–355,600,000Harbor dredging placed on beach1934–35 harbor projectWest jetty to Newport Pier — 1940 report ¶ 68VerifiedS9 S8
1934–351,900,000Harbor dredging placed on beach1934–35 harbor projectNewport Pier to 46th St — 1940 report ¶ 69; about 1,490,000 accounted for in the 1935 surveyVerifiedS9 S8
1965124,000Moved within NewportBalboa PeninsulaWest NewportSecondhandS8
196660,000Moved within NewportBalboa PeninsulaWest NewportSecondhandS8
1967150,000Moved within NewportBalboa PeninsulaWest NewportSecondhandS8
1968435,000Moved within NewportBalboa Peninsula (Stage 2)West NewportSecondhandS8
1968246,000Direct beach placementSanta Ana River (Stage 2)West NewportSecondhandS8
1969750,000Direct beach placementSanta Ana River (Stage 3)West NewportSecondhandS8
1970124,000Direct beach placementSanta Ana River (Stage 3)West NewportSecondhandS8
1973350,000Direct beach placementSanta Ana River (Stages 4B and 5)West NewportSecondhandS8
19921,300,000Placed offshore (nearshore mound)Santa Ana RiverOffshore of West Newport, 5–20 ft below MLLW, between the river mouth and the groin fieldSecondhandS8
1995–96140,000Planned / proposed (not confirmed placed)Surfside-Sunset/West Newport project (proposed)West Newport, 56th to 28th StPlannedS38
2009100,000Moved within NewportBeach near the Santa Ana River mouth (Stage 12)West Newport — Moved within the Newport ocean beach, from near the river mouth.SecondhandS8
2023–24100,000Planned / proposed (not confirmed placed)Sand accumulated in far West Newport (reported plan)West Newport, 36th to 52nd St — Separate from the 1.2 million cu yd regional dredge. A CEQA attachment lists 71,000 cu yd for 2023–24 (S21). Unresolved.PlannedS20
19644,000,000Regional feeder (upcoast)Anaheim Bay (Stage 1)Surfside–Sunset, not NewportSecondhandS8
19712,260,000Regional feeder (upcoast)Anaheim Bay (Stage 4A)Surfside–Sunset, not NewportSecondhandS8
19791,644,000Regional feeder (upcoast)Offshore borrow (Stage 7)Surfside–Sunset, not NewportSecondhandS8
1983400,000Regional feeder (upcoast)Naval Weapons Station channel deepeningSurfside–Sunset, not NewportSecondhandS8
19841,500,000Regional feeder (upcoast)Offshore borrow (Stage 8)Surfside–Sunset, not NewportSecondhandS8
1984783,000Regional feeder (upcoast)Seal Beach NWSSurfside–Sunset, not NewportSecondhandS8
1989180,000Regional feeder (upcoast)NWS channel deepeningSurfside–Sunset, not NewportSecondhandS8
19901,300,000Regional feeder (upcoast)Offshore borrow (Stage 9)Surfside–Sunset, not NewportSecondhandS8
1990522,000Regional feeder (upcoast)Offshore borrow (Stage 9)Surfside–Sunset, not NewportSecondhandS8
1996–971,600,000Regional feeder (upcoast)Offshore borrow (Stage 10)Surfside–Sunset, not NewportSecondhandS8
20022,233,000Regional feeder (upcoast)Stage 11Surfside–Sunset, not NewportSecondhandS8
20091,000,000Regional feeder (upcoast)Offshore borrow (Stage 12)Surfside–Sunset, not NewportSecondhandS8
2009*250,000Regional feeder (upcoast)Offshore borrow (Stage 12; listed without a separate date)Surfside–Sunset, not NewportSecondhandS8
2009*250,000Regional feeder (upcoast)Offshore borrow (Stage 12; listed without a separate date)Surfside–Sunset, not NewportSecondhandS8
20231,200,000Regional feeder (upcoast)Regional project (reported)Surfside–Sunset, not NewportReportedS20
  • Natural sediment delivered by the 1969 Santa Ana River flood: No verified volume found. Shown nowhere in the chart.
  • A continuous annual series: Placements are episodic; years without a reported placement are left empty, not zero-filled.

Sources: Army Corps records as compiled by Wiegel (2009, UC Berkeley HEL 2009-2); the 1940 report (H. Doc. 637) is cited through Wiegel; 1995 notice via CEQAnet; 2023 figures from local reporting. Chart and compilation: LedgeX Research.

Physical damage is not the same as lost value

Damage is a cost that has already happened. Value is a forecast. A flooded garage, ruined drywall or a damaged car is a loss, and it may or may not be insured. Market value is something else: what the next buyer will pay for everything the property is expected to deliver in the future.

The two can move independently. A damaged home can keep its value if buyers see the event as rare and well managed. An undamaged home can lose value if the event changes what buyers expect about insurance costs, public spending, or how often the next flood will come.

On the peninsula, land often accounts for much of the price. Water rarely destroys land. But land's value rests almost entirely on those expectations.

LedgeX Research · Figure 4

What is a flood-exposed home worth? A model you can change

Adjust the assumptions and watch the modeled present value move. The point is the mechanics: how premiums, uninsured losses, upkeep and, above all, the price the next buyer pays combine into value today.

Illustrative model This is not a valuation of any Newport Beach property. Every default is an invented round number chosen to show how the model behaves. None is an observed Newport premium, flood probability or appreciation rate.

The three illustrative scenarios, computed by the same model the interactive version runs. Turn on JavaScript to edit them.

Illustrative scenarios and modeled results
Illustrative input / outputLower exposureHigher exposureStronger infrastructure
Starting reference value (e.g. purchase price) ($)$3,000,000$3,000,000$3,000,000
Annual housing benefit (net of ordinary costs) ($/yr)$90,000$90,000$90,000
Housing benefit growth (%/yr)2.52.52.5
Annual flood insurance premium ($/yr)$3,000$12,000$6,000
Insurance premium growth (%/yr)384
Annual chance of a damaging flood (%)283
Uninsured cost per damaging flood ($)$40,000$120,000$60,000
Flood-related maintenance and mitigation ($/yr)$1,000$5,000$2,000
Cost inflation (losses, maintenance) (%/yr)2.52.52.5
Discount rate (%/yr)5.55.55.5
Holding period (years)101010
Underlying price growth before risk repricing (%/yr)333
Terminal risk-repricing haircut (%)0103
Selling costs at resale (%)666
PV of housing benefit$751,798$751,798$751,798
PV of flood insurance−$25,588−$126,672−$53,368
PV of uninsured flood losses−$6,683−$80,192−$15,036
PV of flood maintenance−$8,353−$41,767−$16,707
PV of net resale proceeds$2,218,691$1,996,822$2,152,130
Modeled present value$2,929,865$2,499,989$2,818,818
Modeled value with every flood input set to zero$2,970,489$2,970,489$2,970,489
Incremental modeled flood-risk effect (% of the no-flood value)−$40,624 (-1.4%)−$470,500 (-15.8%)−$151,671 (-5.1%)
Difference from starting reference value (% of starting value). Not a flood-risk discount−$70,135 (-2.3%)−$500,011 (-16.7%)−$181,182 (-6.0%)
Formulas, assumptions and what the model leaves out

PV = Σt=1..T (Bt − It − Lt − Mt) / (1+r)t + VT(1−h)(1−s) / (1+r)T

  • Bt = B(1+gB)t−1: the housing benefit (rent saved or rent earned), net of ordinary carrying costs such as taxes and routine upkeep.
  • It = I(1+gI)t−1: the flood insurance premium paid. Losses the policy pays are already bought through this premium.
  • Lt = p·U(1+π)t−1: expected uninsured cost only (deductibles, losses above limits, uncovered contents, displacement). Probability p times cost per event U.
  • Mt = M(1+π)t−1: recurring flood-related maintenance or mitigation.
  • VT = P(1+gV)T: resale value before risk repricing. h is the haircut a future buyer applies for risk beyond year T; s is selling costs.

No double counting. A loss is counted once: in the premium if insured, in L if not. The haircut h prices only risk after the holding period, because losses during the holding period are already in I and L. Cash flows are annual and arrive at year end. “Modeled present value” is the present value of what an owner with these assumptions would receive.

Three different numbers. (1) Modeled present value: the formula above. (2) Incremental modeled flood-risk effect: modeled present value minus the same calculation with every flood input (I, p, M and h) set to zero, holding all other assumptions constant; it equals −(PV of premiums + PV of uninsured losses + PV of flood upkeep + PV of the resale haircut net of selling costs), and its percentage is stated against the no-flood value. (3) Difference from the starting reference value: modeled present value minus the starting value, as a percentage of the starting value. The third number mixes flood and non-flood assumptions, so it is not a flood-risk discount. The benefit and price-growth inputs may already reflect some flood risk; the counterfactual removes only the flood inputs entered explicitly. None of these is a measured or actual Newport Beach value.

Left out on purpose: financing and leverage, taxes, a catastrophic total loss, correlation between losses and resale prices, public-protection funding risk as a separate term, and any Newport-specific data. The calculations are tested (91 automated checks, including closed-form annuity identities and the flood counterfactual); the model code is published in readable form.

Who actually carries the risk

Homeowners and their insurers. Standard homeowners policies generally do not cover flood damage. Flood coverage is bought separately, usually through FEMA's National Flood Insurance Program. For a single-family home, NFIP coverage tops out at $250,000 for the building and $100,000 for contents. A new policy usually takes 30 days to take effect, with exceptions such as a policy bought at the time of a mortgage closing (FEMA). On a peninsula where many homes sell for several million dollars, those caps can be small relative to the cost of rebuilding. That gap pushes owners toward private flood coverage, self-insurance, or simply living with the risk.

FEMA's current pricing system, Risk Rating 2.0, prices each policy on that property's own flood risk rather than mainly on its map zone. Where premiums rise, annual increases are generally capped at 18 percent until the full risk rate is reached (FEMA). Second homes and some other properties rise faster, at 25 percent a year (42 U.S.C. § 4015(e)). That cap means a property's long-run insurance cost may not be fully visible in this year's bill.

Standard flood insurance generally covers specified physical losses, subject to policy terms and limits. It does not ordinarily compensate owners for a decline in their property’s market value caused by changing expectations about future coastal risk. If expectations change, that loss generally falls on the owner.

Lenders. Federal law requires flood insurance for buildings in FEMA Special Flood Hazard Areas when the mortgage comes from a federally regulated or federal agency lender, and Fannie Mae and Freddie Mac must ensure coverage on such loans they buy (42 U.S.C. § 4012a). Lenders may require flood coverage in other zones at their discretion.

Research by Amine Ouazad and Matthew Kahn found that after billion-dollar disasters, lenders became more likely to approve and securitize loans in affected areas that Fannie Mae and Freddie Mac could buy. In effect, some flood-related default risk moved from banks to the government-backed enterprises (NBER Working Paper 26322). One implication is a point of inference, not a finding about Newport: loans above the conforming limit cannot be sold that way, so for many high-priced coastal homes the originating lender keeps more of the risk. We have no evidence that any lender has changed its terms in Newport Beach.

The public. Berms, pumps, tide valves, staff overtime and periodic sand placement are paid for mainly from municipal, county and federal budgets. The benefits are real and widely shared: public beaches, roads, utilities, emergency access, local businesses and the tax base. But nearby private owners capture a meaningful share. A 2024 modeling study by researchers including Martin Smith, a co-author of that North Carolina beach-width study, concluded that subsidized nourishment can delay the adjustment of coastal prices to rising risk (McNamara, Smith et al., Nature Communications). That is a model-based finding about coastal markets in general, not a measurement of Newport.

Households, not just "wealthy owners." A peninsula owner may hold millions in paper equity and very little cash. Consider a retiree who bought decades ago, or a family that inherited a cottage. For them, a deductible, an uninsured contents loss, months of displacement, or a sharply higher premium can be a real hardship. Renters have no equity at stake at all, only their belongings and their housing. Coastal risk lands hardest on whoever has the least cash relative to their exposure.

LedgeX Research · Figure 5

Who carries coastal flood risk, and how it moves

Select a participant to see the costs it may bear, the risks it can pass on, the rules that govern the transfer and what is still unknown. Dashed arcs are discretionary or conditional: nothing on a dashed arc happens automatically.

No automatic backstop. Public assistance depends on declarations, eligibility rules and appropriations, and California's disaster act funds local public agencies, not individual owners.

Diagram showing how coastal flood risk is split among owners, insurers, lenders and public agencies. Arcs show transfer mechanisms; dashed arcs are discretionary or conditional, not automatic.Premiums in; claims out up to limits (Contractual: happens under the policy terms)In an SFHA, covered loans require flood insurance (Rule-based: follows from law or budget process)Sale of conforming loans to the GSEs (Discretionary: a party chooses to do it)NFIP Treasury borrowing (subject to authority) (Discretionary: a party chooses to do it)Reimbursement only if approved / declared (Conditional: requires an approval or declaration)Local budgets fund emergency work (Rule-based: follows from law or budget process)Public shares paid from appropriations (Rule-based: follows from law or budget process)Owners& renters›InsurersNFIP · private›Lendersbanks · servicers›CityNewport Beach›State & federalagencies · GSEs›Taxpayersall levels
  • Contractual: happens under the policy terms
  • Rule-based: follows from law or budget process
  • Discretionary: a party chooses to do it
  • Conditional: requires an approval or declaration

Property owners and renters

Costs they may bear
  • Deductibles, and losses above coverage limits (NFIP single-family maximums: $250,000 building, $100,000 contents)
  • Damage with no flood policy at all: standard homeowners policies generally exclude flood
  • A decline in market value caused by changing expectations about future coastal risk. Standard flood insurance generally covers specified physical losses, subject to policy terms and limits; it does not ordinarily compensate owners for that decline
  • Displacement, cleanup time and cash-flow strain, which fall hardest on cash-poor owners and on renters
Risks they may transfer
  • Buy NFIP or private flood coverage (a new NFIP policy usually takes 30 days to take effect, with exceptions)
  • Pass part of the risk to a lender through a mortgage, subject to the lender's insurance requirements
Governing mechanisms
  • Insurance contract terms and limits
  • FEMA Risk Rating 2.0: property-specific pricing; annual increases capped by statute at 18% for most policies, 25% for second homes and some other properties, until the full-risk rate is reached
  • California Natural Hazard Disclosure Statement (discloses SFHA status at sale)
What remains uncertain
  • Future premiums: the 18% cap means today's bill may not show the long-run cost
  • Private flood availability and price for a specific home
  • Whether any public assistance would apply to an individual household after a given event

Connections

  • Property owners → Insurers: Premiums in; claims out up to limits S26
  • Property owners → Mortgage lenders: In an SFHA, covered loans require flood insurance S47

Sources: S26 S27 S48 S34

Insurers NFIP and private carriers

Costs they may bear
  • Covered flood claims, up to policy limits
  • For the NFIP: claims in catastrophic years can exceed premium income
Risks they may transfer
  • NFIP: borrows from the U.S. Treasury. The Congressional Research Service put the debt at about $22.5 billion as of March 2026, with about $7.9 billion of borrowing authority left and roughly $619 million a year in interest
  • Private carriers: price, limit, exclude or decline coverage (contract and state regulation govern how)
Governing mechanisms
  • Policy limits, deductibles, waiting periods
  • Risk Rating 2.0 rating rules
  • Congressional reauthorization and borrowing authority for the NFIP
What remains uncertain
  • How any insurer is currently pricing Newport Beach risk: we have no evidence and make no claim
  • Future NFIP reauthorization and debt treatment. Authority currently runs to Dec. 11, 2026 under a continuing resolution; in a lapse, new and renewal NFIP policies cannot be issued

Connections

  • Property owners → Insurers: Premiums in; claims out up to limits S26
  • Insurers → State and federal agencies: NFIP Treasury borrowing (subject to authority) S49

Sources: S26 S27 S49 S51

Mortgage lenders banks and servicers

Costs they may bear
  • Default risk if uninsured damage or a fall in collateral value leaves a borrower unable or unwilling to pay
Risks they may transfer
  • Require flood insurance: mandatory in FEMA Special Flood Hazard Areas for loans from federally regulated or federal agency lenders, and Fannie Mae and Freddie Mac must ensure coverage on such loans they buy; discretionary elsewhere
  • Sell conforming loans to Fannie Mae or Freddie Mac. One U.S. study found lenders became more likely to approve and securitize such loans after billion-dollar disasters
Governing mechanisms
  • 42 U.S.C. § 4012a (Flood Disaster Protection Act of 1973, as amended in 1994): mandatory purchase
  • Loan covenants and servicing rules
  • Secondary-market sale (conforming loans only)
What remains uncertain
  • Loans above the conforming limit cannot be sold to the GSEs, so originators may keep more risk. This is an inference, not a finding about Newport
  • We have no evidence that any lender has changed terms in Newport Beach

Connections

  • Property owners → Mortgage lenders: In an SFHA, covered loans require flood insurance S47
  • Mortgage lenders → State and federal agencies: Sale of conforming loans to the GSEs S29

Sources: S47 S29

Municipal government City of Newport Beach

Costs they may bear
  • Emergency response: building berms, operating tide valves and pumps, staff time
  • Public infrastructure damage, and local shares of shore projects
Risks they may transfer
  • May seek state reimbursement under the California Disaster Assistance Act, subject to state approval (see State/federal)
  • Local sponsors of federal shore projects share costs and, historically, had to keep the shore publicly owned and open
Governing mechanisms
  • Local emergency proclamation (declared Oct. 9, 2026)
  • Council appropriations
  • Federal project cost-sharing agreements
What remains uncertain
  • Rachel's response and damage costs had not been released as of Oct. 11, 2026
  • Whether any state or federal assistance will be requested or granted

Connections

  • Municipal government → State and federal agencies: Reimbursement only if approved / declared S40
  • Municipal government → Taxpayers: Local budgets fund emergency work S1

Sources: S1 S7 S40

State and federal agencies incl. Cal OES, FEMA, USACE, GSEs

Costs they may bear
  • Federal shares of authorized shore projects (67% for the 1968–73 West Newport works)
  • State share of eligible local-agency costs under CDAA (up to 75%), when approved
  • Credit risk on loans the GSEs purchase
Risks they may transfer
  • Costs pass to public budgets and Treasury borrowing
Governing mechanisms
  • Congressional authorization and appropriation (e.g., River and Harbor Act of 1962)
  • CDAA: repair funding needs the Cal OES Director's concurrence with a local proclamation; reimbursement for emergency activities needs a Governor's proclamation; federal matching needs a Presidential declaration
  • CDAA assistance goes to local public agencies (and certain nonprofits), not individual owners
What remains uncertain
  • Whether any proclamation or declaration will be sought for Rachel
  • How future nourishment cycles will be funded

Connections

  • Mortgage lenders → State and federal agencies: Sale of conforming loans to the GSEs S29
  • Insurers → State and federal agencies: NFIP Treasury borrowing (subject to authority) S49
  • Municipal government → State and federal agencies: Reimbursement only if approved / declared S40
  • State and federal agencies → Taxpayers: Public shares paid from appropriations S7

Sources: S7 S40 S29

Taxpayers local, state, national

Costs they may bear
  • Ultimately fund public shares: local general funds, state disaster funds, federal appropriations and NFIP Treasury borrowing
Risks they may transfer
  • None: this is where public costs end up
Governing mechanisms
  • Budgets and appropriations at each level of government
What remains uncertain
  • Incidence: public beaches, roads, utilities and the tax base benefit widely, but nearby private owners capture a meaningful share. A 2024 modeling study found subsidized nourishment can delay price adjustment: a model-based finding about coastal markets, not a Newport measurement

Connections

  • Municipal government → Taxpayers: Local budgets fund emergency work S1
  • State and federal agencies → Taxpayers: Public shares paid from appropriations S7

Sources: S50 S49

Four ways a market could respond

A flood does not automatically lower prices. Research supports several possibilities, and they are competing hypotheses for Newport:

  1. The risk was already priced in. If buyers already understood the peninsula's exposure, a storm like Rachel adds little new information, and prices barely move. Nationally, homes exposed to projected sea-level rise have been found to sell for about 7 percent less than comparable unexposed homes the same distance from the beach. That discount was concentrated among sophisticated buyers (Bernstein, Gustafson and Lewis, 2019).

  2. The event revealed underappreciated exposure. In North Carolina, researchers found no flood-zone price discount before Hurricane Fran. After Fran the discount was 5.7 percent, and after Hurricane Floyd it was 8.8 percent. The discount then faded, roughly disappearing within five or six years (Bin and Landry, 2013). Salience matters, and memory fades.

  3. Successful defense raised confidence. Sunday reporting found peninsula streets dry as crews reinforced the berms. If that holds and cleanup is quick, buyers may conclude that the city can manage these events. That could support prices rather than weaken them.

  4. Expectations shifted, but prices did not move yet. Buyers might quietly revise what they expect to pay for insurance, maintenance or future public spending, ask for more inspections, or take longer to close, without changing headline prices. That kind of shift appears first in time on market and contract terms, not in sale prices.

We have not measured which of these applies to Newport Beach. Any claim that the market has already "corrected" or "shrugged it off" would be premature.

LedgeX Research · Figure 6

What the research measured, and where

Three peer-reviewed studies cited in this article. They measure different things in different markets with different methods, so each sits on its own scale. None is a prediction for Newport Beach.

U.S. coastal homes (national sample)

Bernstein, Gustafson & Lewis (2019)

Journal of Financial Economics 134(2), 253–272 · S30

Price discount for sea-level-rise exposure

0%-5%-10%SLR-exposedSLR-exposed homes: About 7% lower than comparable unexposed homes.Flood ~100 yrs outExposed, but not projected to flood for almost a century: About 4% discount for homes not projected to flood for almost a century.
  • SLR-exposed homes: About 7% lower than comparable unexposed homes.
  • Exposed, but not projected to flood for almost a century: About 4% discount for homes not projected to flood for almost a century.
Method
Compares homes exposed to projected sea-level rise with unexposed homes the same distance from the beach.
Read with care
The discount is driven by sophisticated buyers and communities worried about global warming. A cross-sectional discount, not a response to a single event.

Pitt County, North Carolina (an inland county)

Bin & Landry (2013)

Journal of Environmental Economics and Management 65(3), 361–376 · S31

Flood-zone price effect relative to non-flood-zone homes

0%-5%-10%Before FranBefore Fran: No significant flood-zone discount.After FranAfter Fran: 5.7% discount.After FloydAfter Floyd: 8.8% discount.5–6 yrs after FloydFive to six years after Floyd: Discount roughly disappears.
  • Before Fran: No significant flood-zone discount.
  • After Fran: 5.7% discount.
  • After Floyd: 8.8% discount.
  • Five to six years after Floyd: Discount roughly disappears.
Method
Hedonic difference-in-differences comparing flood-zone and other homes across storm events.
Period
Around Hurricanes Fran (1996) and Floyd (1999)
Read with care
An inland market, very different from oceanfront Newport. It illustrates salience and fading memory, not a coastal benchmark.

North Carolina coastal properties

Gopalakrishnan, Smith, Slott & Murray (2011)

Journal of Environmental Economics and Management 61(3), 297–310 · S32

Capitalized value of beach width

OLS estimate1×IV estimate≈5×Relative size of the beach-width coefficient
  • Beach-width effect, IV vs. ordinary least squares: Treating width as endogenous made the estimated value of width nearly five times larger than the OLS estimate.
Method
Hedonic model that treats beach width as endogenous, because nourishment decisions also shape width (instrumental variables).
Read with care
Measures an amenity premium for wider beaches, not a flood-risk discount. Not a valuation of Newport beaches.

The information problem

None of the facts in this article is secret. They are scattered across FEMA flood maps and the city's flood-zone viewer, Army Corps reports from 1940 to 1980 (some available only in libraries), City Council resolutions, university shoreline studies, city emergency releases and federal insurance rules.

California's Natural Hazard Disclosure Statement tells a buyer whether a property lies in a FEMA Special Flood Hazard Area (Cal. Civil Code § 1103.2). It does not tell them whether the beach in front is widening or narrowing, when it was last nourished, who funds the next cycle, or whether the street depends on winter berms and pumps.

A large investor can pay a coastal engineer, an insurance specialist and a land-use attorney to assemble that picture. An individual buyer, often working under a tight escrow deadline, usually cannot. The gap is not that information is hidden. It is that understanding a single parcel means assembling records that were never organized for a property buyer.

That is the kind of work LedgeX Research exists to do: tie conclusions to sources, describe a parcel in its physical and public-infrastructure context, and say plainly when the answer is "not enough information."

Was the water already in the price?

The honest answer today is that we do not know.

Testing it requires a transaction-level study, and the design matters. Comparing oceanfront and inland sale prices tells us almost nothing, because ocean frontage carries an amenity premium large enough to hide any risk discount. A single record sale proves nothing either way. A credible study would compare parcels with materially different exposure — the west-facing groin-field reach against the south-facing Balboa reach, for example, or berm-dependent blocks against higher ground. It would control for view, lot size, building characteristics, elevation and neighborhood. Where possible, it would separate land value from building value. And it would track prices, time on market and sale volume before and after events like 2020 and 2026.

LedgeX Research plans to scope that study. If it goes ahead, we will publish the method and the data limitations before any result.

Until then, the most useful thing a buyer, owner or lender can take from this storm is a sharper set of questions. Which stretch of coast is the parcel on? Which way does that beach face, and is it getting wider or narrower? What does a real flood insurance quote cost, and what would it not cover? Does the street depend on berms, tide valves and pumps? And who is paying to keep the sand there next year?

About the data and graphics

  • Map. FEMA flood zones are a simplified snapshot (10-metre tolerance) of the National Flood Hazard Layer’s Special Flood Hazard Areas, retrieved Oct. 12, 2026. Zone X is omitted. The coastline, piers, jetties, river, roads and street ends come from OpenStreetMap. Historical and 2026 features are placed by the street names their sources use; positions are approximate to about a block. Nothing on the map is a parcel boundary, a surveyed groin location, a historical shoreline or an observed flood extent.
  • Evidence labels. Verified and Official: read in a primary record. Secondhand: a primary record summarized by a credible secondary source (usually Wiegel, 2009). Reported: news or a non-peer-reviewed analysis. Planned: a proposed quantity whose placement we have not confirmed.
  • Charts. Quantities are reported values with their original units. Nothing is interpolated, annualized or converted. Regional placements upcoast are shown separately from Newport placements.
  • Valuation model. An educational present-value model with invented inputs. It does not value any property, and its scenarios are not forecasts.
  • Ownership. FEMA data is a U.S. Government work. OpenStreetMap data is © OpenStreetMap contributors and available under the Open Database License; our derived geometry file is offered under the same license. Cited studies and reports belong to their authors and publishers. LedgeX Research’s contribution is the editorial synthesis, the code and the graphic design.

Sources

  1. S1 City of Newport Beach — local emergency declared — City of Newport Beach, 2026-10-09. Primary; direct.
  2. S2 City of Newport Beach — berm integrity and closures — City of Newport Beach, 2026-10-10. Primary; direct.
  3. S3 City of Newport Beach — continued protection and closures — City of Newport Beach, 2026-10-11. Primary; direct.
  4. S7 Seal Beach–Anaheim Bay … Equity Study for Beach Erosion Control (USACE Los Angeles District) — U.S. Army Corps of Engineers, 1980-03. Primary (government engineering report); direct.
  5. S8 Wiegel, R. L. — Coastal engineering history of the Orange County shoreline (UCB/HEL 2009-2) — University of California, Berkeley, 2009-12-09. Secondary (compiles usace records); direct (PDF).
  6. S9 Beach Erosion Study, Orange County, Calif. (H. Doc. 76-637), letter of the Chief of Engineers dated Feb. 13, 1940 — USACE / Beach Erosion Board, 1940-02-19. Primary (government report); direct: Library of Congress page images inspected (pp. 9–10, 14, 18–19; ¶¶ 28–33, 48–51, 64–73).
  7. S10 Los Angeles Times Photographic Archive — Newport Beach, foot of 26th Street (Sept. 7, 1934) — UCLA Library via Calisphere, 1934 (published with an LA Times article dated Sept. 7, 1934). Primary (photo + caption); direct (record only; image not reproduced).
  8. S12 Newport Beach City Council Resolution 6620 — City of Newport Beach, 1967. Primary; direct (OCR).
  9. S13 Metropolitan Beaches Project — aerial shoreline analysis — UC Irvine (student-led project hosted by the university; no indication of peer review), c. 2021. Secondary; direct.
  10. S16 Spectrum News — Newport Beach high surf flooding (86 tide valves, 18 pumps) — Spectrum News, 2026-10-09. Reported; direct.
  11. S18 NBC Los Angeles — Newport Beach erects higher berm (2020) — NBC Los Angeles, 2020-07-05. Reported; direct.
  12. S19 ABC7 — Sand shortage on Orange County beaches — ABC7, 2021-05-04. Reported; direct.
  13. S20 Newport Beach Independent — 2023 beach nourishment — Newport Beach Independent, 2023-12-07. Reported (quotes city); direct.
  14. S21 CEQA attachment — Orange County nourishment history table — State Clearinghouse (CEQAnet), n.d.. Agency attachment; snippet only.
  15. S26 FEMA — NFIP coverage limits; homeowners policies exclude flood; 30-day waiting period — FEMA, 2018. Primary (federal); direct.
  16. S27 FEMA — Risk Rating 2.0 (2025) — FEMA, 2025. Primary (federal); snippet.
  17. S29 Ouazad & Kahn — Mortgage Finance and Climate Change (NBER w26322) — NBER, 2019 (rev.). Working paper; abstract/snippet.
  18. S30 Bernstein, Gustafson & Lewis — Disaster on the horizon: the price effect of sea level rise (J. Financial Economics 134(2)) — Journal of Financial Economics, 2019. Peer-reviewed; abstract.
  19. S31 Bin & Landry — Changes in implicit flood risk premiums (J. Environmental Economics and Management 65(3)) — JEEM, 2013. Peer-reviewed; abstract.
  20. S32 Gopalakrishnan, Smith, Slott & Murray — The value of disappearing beaches (J. Environmental Economics and Management 61(3)) — JEEM, 2011. Peer-reviewed; abstract.
  21. S34 Cal. Civil Code § 1103.2 — Natural Hazard Disclosure Statement — State of California (via FindLaw), current. Statute; direct.
  22. S36 FEMA National Flood Hazard Layer (NFHL) — layer 28, Flood Hazard Zones (ArcGIS REST service) — FEMA, retrieved 2026-10-12. Primary (federal, public domain); direct — vector snapshot, simplified.
  23. S37 OpenStreetMap — coastline, piers, jetties, Santa Ana River, roads, street ends, place labels — © OpenStreetMap contributors (ODbL 1.0), retrieved 2026-10-12. Open data (crowd-sourced); direct via Overpass API / Nominatim.
  24. S38 Surfside-Sunset / West Newport Beach Nourishment — Environmental Assessment (SCH 1995064013) — USACE via CEQAnet, 1995. Primary (project notice — planned quantities); direct.
  25. S40 Cal OES — California Disaster Assistance Act (CDAA) — California Governor's Office of Emergency Services, current. Primary (state agency); direct.
  26. S41 FEMA Flood Map Service Center (official FIRM panels and address lookup) — FEMA, current. Primary (federal); link-out for verification.
  27. S42 City of Newport Beach — flood zone map viewer — City of Newport Beach GIS, current. Primary (municipal); link-out for verification.
  28. S43 City of Newport Beach — FEMA flood insurance rate map zone definitions — City of Newport Beach, current. Primary (municipal); direct.
  29. S44 ABC7 — High tide from Tropical Storm Rachel floods Newport Beach streets — ABC7 Los Angeles, 2026-10-09. Reported (quotes city utilities director); direct.
  30. S45 ABC News — California beaches forced to close after 'unusually high' ocean water levels — ABC News, 2026-10-11. Reported; direct.
  31. S46 Los Angeles Times — Rachel deluges Southwest with rain, but battered coast catches a break — Los Angeles Times, 2026-10-11. Reported; direct.
  32. S47 42 U.S.C. § 4012a — Flood insurance purchase and compliance requirements — U.S. Code (via Cornell LII), current. Statute; direct.
  33. S48 42 U.S.C. § 4015 — Chargeable premium rates (annual increase limits) — U.S. Code (via Cornell LII), current. Statute; direct.
  34. S49 CRS Insight IN10784 — NFIP debt (updated Mar. 10, 2026) — Congressional Research Service, 2026-03-10. Primary (congressional research); read via everycrsreport.com mirror; congress.gov blocks automated reading.
  35. S50 McNamara, Smith, Williams et al. — Policy and market forces delay real estate price declines on the US coast (Nature Communications 15, 2209) — Nature Communications, 2024. Peer-reviewed; abstract and authors' commentary.
  36. S51 Holland & Knight — Congress faces converging year-end deadlines (NFIP extended to Dec. 11, 2026) — Holland & Knight, 2026-10-09. Secondary (law-firm summary); direct.

About this research: LedgeX Research examines the public records, physical constraints and economic forces that shape land and property decisions. We separate findings from hypotheses and unresolved questions. This article and its interactive figures are not investment, insurance, lending, appraisal or legal advice, and they do not assess any specific property. Corrections: team@ledgexproperties.com.