The sources consulted do not answer this question directly. Here is what they show. No FloodNet sensors deployed within 600 m of this address.1
This is an automated hazard-exposure briefing produced by Riprap from live and precomputed data sources. It is informational only and not a substitute for a professional risk assessment. These are public records about a place, not an assessment of any property or of the people who live there. Riprap computes no score or rating, and records can be missing where people report less.
Live here or own property here? FloodHelpNY explains flood zones and insurance for New York City residents.
Figure 1. Plotted: 22 complaints to 311, each placed at its block and not at a house (hollow rings, proxy); 18 public assets from the register. Search radii (rings): high-water marks 800 m, FloodNet sensors 600 m, 311 complaints 200 m.Map points as a list (40)
Evidence
Source
Finding
Figure
Tier
Data as of
Cite
Behind the answer
FloodNet (New York University and The City University of New York)
FloodNet (New York University and The City University of New York) Measured, fetched 2026-10-05 17:34 UTC
No FloodNet sensors deployed within 600 m of this address.FloodNet ultrasonic depth sensors (NYC)
FEMA National Flood Hazard Layer (NFHL) Modeled, data as of 2007-09-05
In FEMA flood zone X (an area of minimal flood hazard) on FEMA's effective flood map (FIRM panel 3604970203F, effective 2007-09-05), the map in force for the National Flood Insurance Program.FEMA National Flood Hazard Layer, flood zone at this point
FEMA Preliminary National Flood Hazard Layer (Prelim_NFHL)
FEMA Preliminary National Flood Hazard Layer (Prelim_NFHL) Modeled, data as of 2015-01-30
FEMA's preliminary flood map (PFIRM issued 2015-01-30, community 360497) places this address in zone X (an area of minimal flood hazard). A preliminary map is not the effective map and does not set flood insurance. New York City applies whichever of the 2015 preliminary maps or the 2007 effective maps is more restrictive for Building Code and zoning purposes, and FEMA uses the 2007 effective maps for the National Flood Insurance Program (NYC Hazard Mitigation Plan, flooding profile). FEMA preliminary flood map (PFIRM), flood zone at this point
NYC Stormwater Flood Maps (method of the 2021 Stormwater Resiliency Plan; Open Data files of 2024)
NYC Stormwater Flood Maps (method of the 2021 Stormwater Resiliency Plan; Open Data files of 2024) Modeled, data as of 2024-07-03
The city's stormwater flood map "Limited Flood (1.77 inches/hr) with Current Sea Levels" (the near term) shows no flooding category at the point mapped for this address. The city's stormwater flood maps are modelled scenarios (each a design storm paired with a sea level), not forecasts: their rainfall flooding categories cover public areas and rain only, the city says the map "does not provide the exact depth of flooding at any location", and it is not a flood plain determination. The city's Stormwater Resiliency Plan (2021) calls its moderate storm "the 10-year storm, with approximately 10 percent chance of occurrence in any given year" and its extreme storm "the 100-year storm, with approximately 1 percent chance of occurrence in any given year". Outside a mapped extent does not mean safe: NYC Emergency Management reports that during Hurricane Ida in 2021 "The most heavily impacted areas, representing over half of all damaged buildings, were also outside of any flood risk scenario, including FEMA floodplain maps and the NYC Stormwater Resiliency Plan's Extreme and Moderate stormwater scenarios" (NYC Hazard Mitigation Plan, flooding profile, nychazardmitigation.com).5
The city's stormwater flood map "Moderate Flood (2.13 inches/hr) with Current Sea Levels" (the near term) shows no flooding category at the point mapped for this address. The city's stormwater flood maps are modelled scenarios (each a design storm paired with a sea level), not forecasts: their rainfall flooding categories cover public areas and rain only, the city says the map "does not provide the exact depth of flooding at any location", and it is not a flood plain determination. The city's Stormwater Resiliency Plan (2021) calls its moderate storm "the 10-year storm, with approximately 10 percent chance of occurrence in any given year" and its extreme storm "the 100-year storm, with approximately 1 percent chance of occurrence in any given year". Outside a mapped extent does not mean safe: NYC Emergency Management reports that during Hurricane Ida in 2021 "The most heavily impacted areas, representing over half of all damaged buildings, were also outside of any flood risk scenario, including FEMA floodplain maps and the NYC Stormwater Resiliency Plan's Extreme and Moderate stormwater scenarios" (NYC Hazard Mitigation Plan, flooding profile, nychazardmitigation.com).6
The city's stormwater flood map "Moderate Flood (2.13 inches/hr) with 2050 Sea Level Rise" shows no flooding category at the point mapped for this address. The city's stormwater flood maps are modelled scenarios (each a design storm paired with a sea level), not forecasts: their rainfall flooding categories cover public areas and rain only, the city says the map "does not provide the exact depth of flooding at any location", and it is not a flood plain determination. The city's Stormwater Resiliency Plan (2021) calls its moderate storm "the 10-year storm, with approximately 10 percent chance of occurrence in any given year" and its extreme storm "the 100-year storm, with approximately 1 percent chance of occurrence in any given year". Outside a mapped extent does not mean safe: NYC Emergency Management reports that during Hurricane Ida in 2021 "The most heavily impacted areas, representing over half of all damaged buildings, were also outside of any flood risk scenario, including FEMA floodplain maps and the NYC Stormwater Resiliency Plan's Extreme and Moderate stormwater scenarios" (NYC Hazard Mitigation Plan, flooding profile, nychazardmitigation.com).7
The city's stormwater flood map "Extreme Flood (3.66 inches/hr) with 2080 Sea Level Rise" shows no flooding category at the point mapped for this address. The city's stormwater flood maps are modelled scenarios (each a design storm paired with a sea level), not forecasts: their rainfall flooding categories cover public areas and rain only, the city says the map "does not provide the exact depth of flooding at any location", and it is not a flood plain determination. The city's Stormwater Resiliency Plan (2021) calls its moderate storm "the 10-year storm, with approximately 10 percent chance of occurrence in any given year" and its extreme storm "the 100-year storm, with approximately 1 percent chance of occurrence in any given year". Outside a mapped extent does not mean safe: NYC Emergency Management reports that during Hurricane Ida in 2021 "The most heavily impacted areas, representing over half of all damaged buildings, were also outside of any flood risk scenario, including FEMA floodplain maps and the NYC Stormwater Resiliency Plan's Extreme and Moderate stormwater scenarios" (NYC Hazard Mitigation Plan, flooding profile, nychazardmitigation.com).8
Modeled
Data as of2024-07-03
USGS STN
USGS STN Measured, retrieved 2026-07-11
No Hurricane Ida (Sept 2021) high-water marks were surveyed within 800 m of this address. USGS's file holds 159 Ida high-water marks for all of New York State, so no mark nearby is not a record that the place stayed dry. Nearest USGS-surveyed mark: Intersection of Carroll St. and Nevins St., Gowanus, Brooklyn (1417 m away). Hurricane Ida 2021, USGS high-water marks
USGS 3DEP DEM (precomputed citywide GeoTIFF, WGS84)
USGS 3DEP DEM (precomputed citywide GeoTIFF, WGS84) Proxy, retrieved 2026-07-11
Elevation about 17 m (NAVD88), read from one cell about 22 m across of the USGS 3DEP elevation model (a cell holds one value for all the ground in it, and a survey point can differ from it by a metre or more); this point is higher than 60% of the ground within 200 m (the 60th percentile; a low percentile means a local low spot where water collects).LiDAR / DEM-derived micro-topography
New York City's 2017 land cover map (6 inch, from LiDAR and aerial imagery) shows that 74.5% of the ground within 500 m of this address is paved or built over and 25.5% is green (23.5% tree canopy).NYC Land Cover 2017 (6 inch), tree canopy and paved shareFigure: 23.5% tree canopy, 74.5% paved or built (2017)
43 MTA subway entrances within 800 m of this address (each entrance read at its own point on the maps, with no buffer); of the nearest 8: 0 inside the 2012 Sandy inundation extent and 1 inside the DEP stormwater map "Extreme Flood (3.66 inches/hr) with 2080 Sea Level Rise", a modelled scenario (1 in a rainfall flooding category and 0 in its future high tides category, which is coastal tidal inundation projected for 2080 and not rainfall flooding). In a rainfall flooding category of the modelled "Extreme Flood (3.66 inches/hr) with 2080 Sea Level Rise" map, by station: Bergen St (F G) (435 m). The city's stormwater flood maps are modelled scenarios (each a design storm paired with a sea level), not forecasts: their rainfall flooding categories cover public areas and rain only, the city says the map "does not provide the exact depth of flooding at any location", and it is not a flood plain determination. MTA subway/rail entrances exposed nearby
1 NYCHA development inside a mapped flood extent within 2000 m of this address (the register lists only developments with 10% or more of their mapped outline inside the 2012 Sandy extent, or their centre point inside one of three modeled DEP stormwater scenarios (Moderate Flood with current and with 2050 sea levels, Extreme Flood with 2080; the Limited Flood map is not tested), not every development): 1 inside the 2012 Sandy inundation extent and 0 inside the DEP stormwater map "Extreme Flood (3.66 inches/hr) with 2080 Sea Level Rise", a modelled scenario. Inside the 2012 Sandy extent: RED HOOK EAST (1900 m). Under 10% of the outline inside the 2012 Sandy extent (not counted): GOWANUS (842 m), INGERSOLL (1254 m). The city's stormwater flood maps are modelled scenarios (each a design storm paired with a sea level), not forecasts: their rainfall flooding categories cover public areas and rain only, the city says the map "does not provide the exact depth of flooding at any location", and it is not a flood plain determination. NYCHA developments exposed nearby
NYC Department of Education Measured, data as of 2019-09-04
0 public schools inside a mapped flood extent within 1500 m of this address (from the NYC Department of Education's school locations for the 2019 to 2020 school year, charter schools included; the register lists only schools whose location point is inside the 2012 Sandy extent or one of three modeled DEP stormwater scenarios (Moderate Flood with current and with 2050 sea levels, Extreme Flood with 2080; the Limited Flood map is not tested), not every school): 0 inside the 2012 Sandy inundation extent at their mapped points, 2 more within 50 m of the extent's mapped edge, and 0 inside the DEP stormwater map "Extreme Flood (3.66 inches/hr) with 2080 Sea Level Rise", a modelled scenario. Outside the 2012 Sandy extent but within 50 m of its mapped edge (the outline is not exact to a building): P.S. 287 Bailey K. Ashford (1335 m), District 13 PRE-K Center (1429 m). The city's stormwater flood maps are modelled scenarios (each a design storm paired with a sea level), not forecasts: their rainfall flooding categories cover public areas and rain only, the city says the map "does not provide the exact depth of flooding at any location", and it is not a flood plain determination. Public schools exposed nearby
4 hospitals within 3000 m of this address (each read at the one point the state file gives for it, not across its campus): 0 inside the 2012 Sandy inundation extent and 1 inside the DEP stormwater map "Extreme Flood (3.66 inches/hr) with 2080 Sea Level Rise", a modelled scenario (1 in a rainfall flooding category and 0 in its future high tides category, which is coastal tidal inundation projected for 2080 and not rainfall flooding). In a rainfall flooding category of the modelled "Extreme Flood (3.66 inches/hr) with 2080 Sea Level Rise" map: Brooklyn Hospital Center - Downtown Campus (1332 m). The city's stormwater flood maps are modelled scenarios (each a design storm paired with a sea level), not forecasts: their rainfall flooding categories cover public areas and rain only, the city says the map "does not provide the exact depth of flooding at any location", and it is not a flood plain determination. NYS DOH hospitals exposed nearby
NYC 311 Service Requests (NYC Open Data) Proxy, data as of 2026-10-05
22 NYC 311 complaints about flooding and sewer backups filed within 200 m of this location in the last 5 years (since 2021-10-06; eleven descriptors; other sewer complaints, such as odors or missing covers, are not counted): 10 catch basin, 9 sewer backup, 2 street flooding, 1 manhole overflow. A count of complaints is a count of reports filed, not of floods: a low count can mean under-reporting and not the absence of flooding, because the propensity to file a 311 request varies with income, language and demographics (studies of other 311 complaint types: Kontokosta, Hong and Korsberg, arXiv:1710.02452; Boxer, Hong, Kontokosta and Neill, Annals of Applied Statistics 19(2), 2025, doi:10.1214/24-AOAS2003). NYC 311 complaints about flooding and sewer backups (5y)
National Weather Service (NOAA) Measured, fetched 2026-10-05 17:34 UTC
Latest METAR at Central Park, NY (10.1 km away): mostly cloudy, 18.9°C, no precipitation reported, observed 2026-10-05 15:51 UTC.NWS hourly METAR observations (nearest station)
NOAA CO-OPS Measured, fetched 2026-10-05 17:34 UTC
Latest reading at The Battery, NY, the nearest NOAA tide station in a straight line (2.1 km away, on New York Harbor): 3.37 ft above MLLW (+0.3 ft vs predicted tide), observed 2026-10-05 17:18 UTC.NOAA tide-gauge water level (nearest station)Figure: Observed water level
NWS National Water Prediction Service Modeled, fetched 2026-10-05 17:34 UTC
The National Weather Service forecasts a peak water level of 5.4 ft above MLLW at The Battery, the nearest forecast gauge (2 km away), on 2026-10-07 23:00 UTC (forecast issued 2026-10-05 07:33 UTC), below the gauge's minor flood stage of 7.0 ft.NWS water-level forecast (nearest harbor gauge)Figure: Forecast peak water level
NPCC4 (2024) projects sea-level rise in New York City of 14 to 19 in (0.36 to 0.48 m) by the 2050s and 30 to 50 in (0.76 to 1.27 m) by 2100, relative to 1995-2014, as its middle range (25th to 75th percentile); the 90th percentile is 23 in (0.58 m) by the 2050s and 65 in (1.65 m) by 2100.NPCC4 (2024) sea-level rise projections
NYC land-cover model (Riprap, experimental) on Copernicus Sentinel-2 Experimental
NYC land-cover model (Riprap, experimental) on Copernicus Sentinel-2 ExperimentalModeled, data as of 2026
Experimental: a satellite land-cover model estimates that 73.3% of the ground within 500 m of this address is paved or built over and 26.5% is green (21.7% tree canopy), on Sentinel-2 scenes from 2026; no change between years is read from it. Limits: it estimates the share of each 10 m satellite pixel that is canopy, grass, paving, roof, water or bare ground, learned from the city's 2017 six-inch map, so detail finer than about 30 m is blurred and a tree over a street counts as canopy; against The Nature Conservancy's 2021 six-inch map of the city, on squares it never trained on, it read a typical district's paved share 1.7 points above the map's (at most 7.8 points off in the 46 districts with enough test ground) and its mean error per land-cover group was 4.8 points at best, more than the 3.0 points of the city's 2017 map read as if it were 2021, so the 2017 map is the more accurate source for its year; citywide its maps show 4.2 to 5.0 points less tree canopy than the city's 2017 map in 3 of its 4 yearly maps (2018, 2021, 2026) and 3.2 points more in 1 of its 4 yearly maps (2024), which is the model and its images and not the trees, so its canopy share can be several points off; two images of one summer differ by under 2.0 points in a district's paved share 19 times in 20, but between 2018 and 2024 the shares of 49 of 59 districts differ by more, so its maps of different years are not compared. Rely on the city's 2017 land cover map and The Nature Conservancy's 2021 map (both 6 inch) and the city's building footprints for a survey. Land cover from satellite, NYC land-cover model (experimental)Figure: 73.3% paved or built, 26.5% green, 21.7% tree canopy (2026)
These sources were consulted at 2026-10-05 17:34 UTC and did not answer, so nothing above is a reading of them and their silence is not an absence: USGS stream gauge, live stage at the nearest gauge.
Sources and method
Sources cited
All 22 sources, with titles and document ids
1FloodNet (New York University and The City University of New York)FloodNet street flood sensors. Flood events and sensor status read from the FloodNet Data API (api.floodnet.nyc, an early-access beta) at the retrieval time shown. A flood event is a series of depth measurements greater than 10 mm at the sensor (FloodNet's definition); a depth is measured at one point and does not show the depth on every part of the street. Riprap counts the events the API marks as verified by a person. FloodNet's published cautions about a depth: "most FloodNet sensors are mounted over sidewalks and are thus unable to measure floods in the roadbed until the water rises above the height of the curb"; the depth at the street's lowest point differs from the reading by the sensor's height above that point; "a single anomalous data point, measured during a flood event" may exaggerate a maximum depth; and a sensor may miss a flood "if it was offline and awaiting repair or had not been deployed yet or retired" (FloodNet's NYC Open Data description, dataset aq7i-eu5q). Ten rows of FloodNet's deployments table are NOAA and USGS tide gauges (deploy_type "tidal"); Riprap does not count them as FloodNet sensors. Riprap names no sensor, because FloodNet's licence forbids reposting its records: each verified event can be found by its date and depth in FloodNet's own table on NYC Open Data, "FloodNet: Street Flooding Events Measured by FloodNet Sensors" (https://data.cityofnewyork.us/d/aq7i-eu5q), and on its dashboard (https://dataviz.floodnet.nyc). Cite: Mydlarz et al. (2024), Water Resources Research 60, e2023WR036806, https://doi.org/10.1029/2023WR036806; Silverman et al. (2022), Water Research, 118648, https://doi.org/10.1016/j.watres.2022.118648. Licence: FloodNet data and content derived from it are CC BY-NC-SA 4.0 (https://creativecommons.org/licenses/by-nc-sa/4.0/), not Riprap's Apache-2.0. Riprap is independent of FloodNet and not endorsed by it.Measured, fetched 2026-10-05 17:34 UTC, floodnet
2NYC Open Data, Sandy Inundation ZoneNYC Sandy Inundation Zone (NYC Open Data 5xsi-dfpx, empirical 2012 extent)Measured, data as of 2015-11-09, sandy_inundation
4FEMA Preliminary National Flood Hazard Layer (Prelim_NFHL), preliminary flood zonesFEMA preliminary flood-zone polygon (PFIRM) intersecting the address point, with the issue date from the service's Preliminary Data Availability layer. Which map is used for what is from the NYC Hazard Mitigation Plan, flooding profile (https://nychazardmitigation.com/documentation/hazard-profiles/flooding/): "New York City applies whichever map (2015 PFIRMs or 2007 FIRMs) is the more restrictive of the two for Building Code and zoning purposes" and "FEMA uses the 2007 FIRMs for compliance with NFIP".Modeled, data as of 2015-01-30, fema_pfirm
5NYC Stormwater Flood Maps (method of the 2021 Stormwater Resiliency Plan; Open Data files of 2024), Limited Flood (1.77 inches/hr) with Current Sea LevelsNYC Stormwater Flood Maps (NYC Open Data 9i7c-xyvv, Department of Environmental Protection), map "Limited Flood (1.77 inches/hr) with Current Sea Levels". Riprap reads this map from the vector tiles of DEP's own map viewer (nyc.gov/stormwater-map, tile service Moderate_5yearMHHW_updateOB_VTile1_61424), because the NYC Open Data file for it is a compressed geodatabase that open tools cannot read; the other three maps are read from the NYC Open Data files. The viewer's tiles and the Open Data files are not identical where both can be read (for the Moderate map with current sea levels the deep and contiguous category matches and the nuisance category differs by about a tenth of its area), so this reading may differ from the Open Data file for the Limited map. Map disclaimer, from DEP's own map items (arcgis.com/home/item.html?id=5b82c08be55d4f30bf28d265ab8e4a49): the map "is intended to be an informational tool and does not provide the exact depth of flooding at any location", shows "the relative risk of flooding in public areas from stormwater runoff due to rain only", and "shall not be used for the design, modification, or construction of improvements to real property or for flood plain determination". The caveat on an outside reading quotes NYC Emergency Management, Hazard Mitigation Plan, flooding profile (https://nychazardmitigation.com/documentation/hazard-profiles/flooding/).Modeled, data as of 2024-07-03, dep_limited_current
6NYC Stormwater Flood Maps (method of the 2021 Stormwater Resiliency Plan; Open Data files of 2024), Moderate Flood (2.13 inches/hr) with Current Sea LevelsNYC Stormwater Flood Maps (NYC Open Data 9i7c-xyvv, Department of Environmental Protection), map "Moderate Flood (2.13 inches/hr) with Current Sea Levels". Map disclaimer, from DEP's own map items (arcgis.com/home/item.html?id=5b82c08be55d4f30bf28d265ab8e4a49): the map "is intended to be an informational tool and does not provide the exact depth of flooding at any location", shows "the relative risk of flooding in public areas from stormwater runoff due to rain only", and "shall not be used for the design, modification, or construction of improvements to real property or for flood plain determination". The caveat on an outside reading quotes NYC Emergency Management, Hazard Mitigation Plan, flooding profile (https://nychazardmitigation.com/documentation/hazard-profiles/flooding/).Modeled, data as of 2024-07-03, dep_moderate_current
7NYC Stormwater Flood Maps (method of the 2021 Stormwater Resiliency Plan; Open Data files of 2024), Moderate Flood (2.13 inches/hr) with 2050 Sea Level RiseNYC Stormwater Flood Maps (NYC Open Data 9i7c-xyvv, Department of Environmental Protection), map "Moderate Flood (2.13 inches/hr) with 2050 Sea Level Rise". The Stormwater Resiliency Plan (2021) describes its moderate scenario as "approximately two inches of rain falling in one hour (also referred to as the 10-year storm, with approximately 10 percent chance of occurrence in any given year) combined with 2.5 feet of SLR". Map disclaimer, from DEP's own map items (arcgis.com/home/item.html?id=5b82c08be55d4f30bf28d265ab8e4a49): the map "is intended to be an informational tool and does not provide the exact depth of flooding at any location", shows "the relative risk of flooding in public areas from stormwater runoff due to rain only", and "shall not be used for the design, modification, or construction of improvements to real property or for flood plain determination". The caveat on an outside reading quotes NYC Emergency Management, Hazard Mitigation Plan, flooding profile (https://nychazardmitigation.com/documentation/hazard-profiles/flooding/).Modeled, data as of 2024-07-03, dep_moderate_2050
8NYC Stormwater Flood Maps (method of the 2021 Stormwater Resiliency Plan; Open Data files of 2024), Extreme Flood (3.66 inches/hr) with 2080 Sea Level RiseNYC Stormwater Flood Maps (NYC Open Data 9i7c-xyvv, Department of Environmental Protection), map "Extreme Flood (3.66 inches/hr) with 2080 Sea Level Rise". The Stormwater Resiliency Plan (2021) describes its extreme scenario as "approximately 3.5 inches of rain falling in one hour (also referred to as the 100-year storm, with approximately 1 percent chance of occurrence in any given year) combined with 4.8 feet of SLR". Map disclaimer, from DEP's own map items (arcgis.com/home/item.html?id=5b82c08be55d4f30bf28d265ab8e4a49): the map "is intended to be an informational tool and does not provide the exact depth of flooding at any location", shows "the relative risk of flooding in public areas from stormwater runoff due to rain only", and "shall not be used for the design, modification, or construction of improvements to real property or for flood plain determination". The caveat on an outside reading quotes NYC Emergency Management, Hazard Mitigation Plan, flooding profile (https://nychazardmitigation.com/documentation/hazard-profiles/flooding/).Modeled, data as of 2024-07-03, dep_extreme_2080
9USGS STN, Hurricane Ida 2021 (Event 312, NY)USGS STN Hurricane Ida 2021 high-water marks (Event 312, NY). The link is the STN web-service query that returns these marks; the retired STN Data Portal page no longer exists.Measured, retrieved 2026-07-11, ida_hwm
10USGS 3DEP DEM (precomputed citywide GeoTIFF, WGS84)USGS 3DEP DEM: the 3D Elevation Program's elevation model, read from the 3DEP elevation service (scripts/fetch_nyc_dem.py) and stored in WGS84, where a cell is about 22 m east to west and 29 m north to south; heights are NAVD88. The service mosaics the best available surveys and the file carries no survey date, so the date shown is when Riprap's copy was made. One cell holds one value for all the ground in it: a survey point can differ from it by a metre or more.Proxy, retrieved 2026-07-11, microtopo
12MTA, subway/rail entrances registerMTA subway/rail entrances, cross-referenced with Sandy 2012 + DEP extreme 2080.Measured, data as of 2025-12-05, mta_entrance_exposure
13NYCHA developments registerNYCHA public housing developments, cross-referenced with Sandy 2012 + DEP extreme 2080.Measured, retrieved 2026-05-01, nycha_development_exposure
15NYS DOH hospitals registerNYS DOH Health Facility General Information (vn5v-hh5r) hospitals in NYC, cross-referenced with Sandy 2012 + DEP extreme 2080.Measured, retrieved 2026-07-11, doh_hospital_exposure
16NYC 311 Service Requests (NYC Open Data)NYC 311 Service Requests from 2020 to Present (NYC Open Data dataset erm2-nwe9), complaints about flooding and sewer backups within 200 m of the point. Counted: requests of complaint type "Sewer" or "Sewer Maintenance" whose descriptor is one of eleven flood and sewer descriptors (street flooding, sewer backup, catch basin, highway flooding, manhole overflow and rain garden flooding, under their coded and plain names; the list is in app/context/nyc311.py), created on or after the start date the sentence gives (midnight UTC, 365 days for each year of the window). A request filed under both descriptor names at the same place within ten minutes is counted once. This citation's query_url is the Socrata query for the counted rows, with no house number or coordinate selected. Complaints are shown at the block, never the house number.Proxy, data as of 2026-10-05, nyc311, the query for these rows
20NWS National Water Prediction Service, gauge forecastNational Weather Service, National Water Prediction Service, official water-level forecast and flood stages for the nearest harbor gauge.Modeled, fetched 2026-10-05 17:34 UTC, nws_water_forecast
21NPCC4, New York City Panel on Climate Change (2024)Braneon, C. et al. (2024). NPCC4: New York City climate risk information 2022, observations and projections. Annals of the New York Academy of Sciences, Vol. 1539 (doi:10.1111/nyas.15116), Table 1: projections for sea level rise in New York City, relative to 1995-2014.Modeled, data as of 2024, npcc4_slr
22NYC land-cover model (Riprap, experimental) on Copernicus Sentinel-2, trained on NYC Land Cover 2017Riprap's NYC land-cover model, trained by scripts/train_cover.py on NYC Land Cover 2017 (6 inch, NYC Open Data) aggregated to 10 m and run by scripts/run_landcover_batch.py on Sentinel-2 L2A scenes; scored against NYC Land Cover 2021 (The Nature Conservancy and UVM) on squares it never trained on. Contains modified Copernicus Sentinel data, via Microsoft Planetary Computer. Experimental: an estimate from 10 m pixels, not a survey.Modeled Experimental, data as of 2026, landcover
What was checked
Sources consulted (23), 1 failed to respond
USGS stream gauge, live stage at the nearest gauge: failed to respond
NYC Sandy Inundation Zone (2012 empirical extent)
FEMA National Flood Hazard Layer, flood zone at this point
FEMA preliminary flood map (PFIRM), flood zone at this point
NYC Stormwater Flood Map - Moderate Flood (2.13 inches/hr) with Current Sea Levels
NYC Stormwater Flood Map - Limited Flood (1.77 inches/hr) with Current Sea Levels
Hurricane Ida 2021, USGS high-water marks
LiDAR / DEM-derived micro-topography
NYC Land Cover 2017 (6 inch), tree canopy and paved share
Land cover from satellite, NYC land-cover model (experimental)
FloodNet ultrasonic depth sensors (NYC)
NYC 311 complaints about flooding and sewer backups (5y)
NWS hourly METAR observations (nearest station)
NOAA tide-gauge water level (nearest station)
MTA subway/rail entrances exposed nearby
NYCHA developments exposed nearby
Public schools exposed nearby
NYS DOH hospitals exposed nearby
NWS active alerts (flood/coastal/tropical storm)
NWS water-level forecast (nearest harbor gauge)
NPCC4 (2024) sea-level rise projections
Not checked for this question: none of the sources for this kind of place were skipped.
Out of scope
This briefing is not a flood zone determination, an engineering assessment or advice. Where a probe was offline at run time, the relevant section omits that signal.
How this briefing was made
Checks run: citations and numbers on every claim; lead rules on the answer.
The rules found no source that answers the question; no language model was used.
Precomputed snapshot, generated 2026-10-05 17:34 UTC from Riprap commit b0398f64. Live readings (tides, alerts, sensors) are as of that time.