Gallery
Precomputed briefings
Snapshots generated ahead of time and saved as static pages. Opening one does not contact the Riprap backend, so the data is as of the generation date, . Each entry is tagged Flood or Heat: 10 of the 35 are heat briefings.
Questions
Answered by rules in code over the question's words, with no language model.
- Hollis, Queens Flood Has the block around 90-01 183rd Street, Queens flooded since Hurricane Ida?
A yes or no question about a block: the Yes is set by rule, because a FloodNet sensor within 100 m of the address recorded a verified flood event since Ida, and the answer is quoted from the sources.
Yes. The record this rests on is a FloodNet sensor with a verified flood event 22 m from this address.
- Homecrest, Brooklyn Flood How many flooding complaints have people near 2017 East 17th Street, Brooklyn made to 311?
A count near an address, answered with the 311 figure.
From the sources consulted: 35 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): 18 catch basin, 12 sewer backup, 5 street flooding.
- Gowanus, Brooklyn Flood What does the 2050 stormwater scenario show at 400 Carroll Street, Brooklyn?
A scenario question: the answer leads with the scenario asked about.
From the sources consulted: The city's stormwater flood map "Moderate Flood (2.13 inches/hr) with 2050 Sea Level Rise" shows the category "Future High Tides 2050" (coastal tidal inundation, not rainfall flooding; at the edge of the mapped flooding (within about 3 m)) at the point mapped for this address.
- Community district QN12, Queens Flood How many street flooding complaints has community district QN12 had?
A community district: complaints counted by the 311 record's own community board field; the outline on the map is the union of its 2020 neighborhood areas.
532 street flooding complaints in the last 3 years, counting the 311 descriptors "Street Flooding (SJ)" and "Flooding on Street".
- Hunts Point, Bronx Flood Have people near 355 Food Center Drive, Bronx reported flooding to 311 in the last five years?
A No about reports, not about flooding: the 311 service answered with no complaint about flooding or sewer backups within 200 m in the last 5 years. The address is in the Hunts Point wholesale food markets, not on a residential block, and a low count can mean under-reporting.
No. 0 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; the 311 service answered and none matched).
- Brooklyn Heights, Brooklyn Flood Have the FloodNet sensors near 189 Atlantic Avenue, Brooklyn recorded flooding?
An empty record, said plainly: no FloodNet sensor is deployed within 600 m, so the sources cannot answer.
The sources consulted do not answer this question directly.
- Red Hook, Brooklyn Flood Should I buy the house at 80 Pioneer Street, Brooklyn?
An advice question: Riprap says it gives no advice on buying a home, then quotes the FEMA flood zone on the effective and the preliminary map.
Riprap reports public records about a place.
- Community district BK06, Brooklyn Flood Which NYCHA developments in Brooklyn Community District 6 lie inside the 2012 Sandy inundation area?
Exposed assets by name: the public housing developments of a district inside the Sandy extent.
From the sources consulted: 2 NYCHA developments inside a mapped flood extent in this area (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): 2 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.
- Kips Bay, Manhattan Flood I live at 30 Waterside Plaza, Manhattan. Will my building flood next week?
A prediction nobody can make: no yes or no, and no refusal either. The answer says so and quotes what is forecast and mapped.
Riprap cannot predict whether a particular place floods on a given day: no source or model here does that.
- Community district QN12, Queens Flood How much of QN12 is paved and how much is green?
Land cover: the city's own 2017 map answers first, cited to it; an experimental satellite model's estimate for the latest imagery follows, labelled with its measured error.
From the sources consulted: New York City's 2017 land cover map (6 inch, from LiDAR and aerial imagery) shows that 67.1% of this area is paved or built over and 32.3% is green (18.9% tree canopy).
- East Harlem, Manhattan Heat Is East Harlem hotter than the rest of the city?
A yes or no the answer does not give, because the record is of the surface and not the air: across 18 summer images the surface of East Harlem (North), the tabulation area the name was answered for, ran 1.0°F warmer than the city's land average, from 0.0 to 3.1°F warmer image by image. The answer quotes that measurement and says what it is.
From the sources consulted: Landsat measured the surface of this area (its parks and open land included) at 1.0°F warmer than the city's land average, over 18 clear summer images from 2023-07-23 to 2026-08-08, each taken at about 11:35 am Eastern Daylight Time; image by image it ran from 0.0 to 3.1°F warmer.
- Hollis, Queens Heat Will it be dangerously hot this week at 90-01 183rd Street, Queens?
A question about the coming days: the National Weather Service's forecast and alerts, quoted as the Weather Service's, with its advisory thresholds beside them. Riprap forecasts nothing itself.
From the National Weather Service, as issued for the next 7 days; Riprap predicts nothing itself: Over the next 7 days the National Weather Service expects daytime highs of 72°F this afternoon, 65°F Tuesday, 68°F Wednesday, 73°F Thursday, 71°F Friday, 69°F Saturday, 66°F Sunday in the 2.5 km grid cell around this place (issued 2026-10-05 09:10 Eastern); the highest apparent temperature it gives, which is the heat index when it is hot, is 73°F on Thursday October 8.
- Red Hook, Brooklyn Heat Will my apartment at 80 Pioneer Street, Brooklyn overheat this weekend?
A prediction nobody can make: no source says how hot one apartment will get. The answer says so, then quotes the area forecast and what has been measured on the block.
Riprap cannot predict what will happen in one building, on one block or on a named day: no source here does that.
- Brighton Beach, Brooklyn Heat What is the heat score for 2940 Brighton 3rd St, Brooklyn?
Riprap computes no score. It says so, and quotes the Health Department's own index for the neighbourhood as what it is: a rank, not a measurement.
The Health Department publishes an index for the neighbourhood, quoted here with what it is and is not: The NYC Health Department's Heat Vulnerability Index (2023, from 2016 to 2020 data) scores Brighton Beach, the neighbourhood around this address, at 4 out of 5.
- Upper West Side, Manhattan Heat How many days reached 90 degrees in 2025 near 1 West 72nd Street, Manhattan?
A count from the station record: the year asked about, at the nearest long-record station, with the station and its distance named.
From the sources consulted: At Central Park, the nearest long-record weather station (0.6 km away), the air temperature reached 90°F on 12 days in 2026 through 2026-10-04 and on 14 in 2025; a full year averaged 17 in 1991 to 2020.
- Morris Heights, Bronx Heat Where can people cool off near 1520 Sedgwick Avenue, Bronx?
Places to cool off: the NYC Parks spray showers nearby, by name and distance, with the plain statement that cooling centers open only in a heat emergency and where the city lists them.
From the sources consulted: NYC Parks lists spray showers at 9 parks or playgrounds within 800 m of this address (lists updated 2026-10-03 and 2026-09-15, copied 2026-10-05); the six nearest: Sedgwick Playground (spray shower, 172 m), Plimpton Playground (spray shower, 370 m), Half-Nelson Playground (spray shower, 437 m), Quisqueya Plgd (spray shower, 547 m), Ogden Plimpton Playground (spray shower, 565 m), Wallenberg Plgd (spray shower, 672 m).
- Astoria, Queens Heat Should I go running in Astoria Park in this heat today?
A refusal: Riprap gives no health or safety advice, and says where official heat guidance is.
Addresses
Evidence briefings built from cited source values, with no language model.
- Brooklyn Heights, Brooklyn Flood 189 Atlantic Avenue, Brooklyn, NY
Dry on the maps: outside the Sandy extent, in FEMA zone X and outside every flooding category on the city's four stormwater flood maps, yet complaints about flooding and sewer backups were filed to 311 within 200 m.
22 complaints to 311 about flooding and sewer backups were filed within 200 m in the last 5 years, since 2021-10-06 (a count of reports; a low count can mean under-reporting, not the absence of flooding).
- Hollis, Queens Flood 90-01 183rd Street, Queens, NY 11423
Inland Queens, outside every flood map, where Ida high-water marks were surveyed 174 m away.
USGS surveyed 2 Hurricane Ida high-water marks within 800 m of this address; the highest stood 0.76 ft above ground.
- Gerritsen Beach, Brooklyn Flood 35 Seba Avenue, Brooklyn, NY
Inside the Sandy extent, yet mapped in zone X's 0.2% annual chance, or 500-year, floodplain.
55 complaints to 311 about flooding and sewer backups were filed within 200 m in the last 5 years, since 2021-10-06 (a count of reports; a low count can mean under-reporting, not the absence of flooding).
- Broad Channel, Queens Flood 20 West 12th Road, Queens, NY
An island community inside the Sandy extent and zone AE, where FloodNet sensors log flood events.
3 FloodNet sensors within 600 m have recorded 31 flood events (each a series of depth readings above 10 mm at the sensor, FloodNet's definition) on 25 separate days since 2024-07-19, the earliest install date among them (the latest is 2026-04-24), the most recent starting 2026-09-27 12:10 UTC (every date here is a UTC day).
- Red Hook, Brooklyn Flood 80 Pioneer Street, Brooklyn, NY
Waterfront Brooklyn inside the Sandy extent and zone AE, with an Ida high-water mark 130 m away.
USGS surveyed 1 Hurricane Ida high-water mark within 800 m of this address; the highest stood 0.3 ft above ground.
- Gowanus, Brooklyn Flood 400 Carroll Street, Brooklyn, NY
The canal: inside the Sandy extent, zone AE and the future high tide areas of the DEP 2050 and 2080 scenarios.
This address is inside the 2012 Sandy inundation footprint (about 24 m from its mapped edge), in FEMA flood zone AE on the 2007 effective map, and inside the future high tide category (coastal tidal inundation, not rainfall flooding) of the city's stormwater flood maps (modelled scenarios, not forecasts) for 2050 and 2080 sea-level rise.
- Rockaway Park, Queens Flood 116-02 Rockaway Beach Boulevard, Queens, NY
Inside the Sandy extent, yet in FEMA zone X on the 2007 flood map.
This address is inside the 2012 Sandy inundation footprint, in FEMA flood zone X (an area of minimal flood hazard) on the 2007 effective map, and outside every flooding category on the city's stormwater flood maps (modelled scenarios, not forecasts) for current, 2050 and 2080 sea-level rise, at a mapped edge.
- Midland Beach, Staten Island Flood 801 Father Capodanno Boulevard, Staten Island, NY
Staten Island's east shore: inside the Sandy extent, with FloodNet sensors that log flood events.
2 FloodNet sensors within 600 m have recorded 30 flood events (each a series of depth readings above 10 mm at the sensor, FloodNet's definition) on 30 separate days in the last 3 years, the most recent starting 2026-07-14 21:18 UTC (every date here is a UTC day).
- Lower East Side, Manhattan Flood 560 Grand Street, Manhattan, NY
Public housing: 11 of the 13 NYCHA developments listed inside a mapped flood extent within 2 km are inside the Sandy extent.
13 NYCHA developments 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): 11 inside the 2012 Sandy inundation extent and 2 inside the DEP stormwater map "Extreme Flood (3.66 inches/hr) with 2080 Sea Level Rise", a modelled scenario (2 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).
- Orchard Beach, Bronx Flood Orchard Beach, Bronx, NY
The Bronx shore: FEMA zone VE, the coastal high hazard area, inside the 2012 Sandy extent.
This address is inside the 2012 Sandy inundation footprint (about 39 m from its mapped edge), in FEMA flood zone VE on the 2007 effective map, and outside every flooding category on the city's stormwater flood maps (modelled scenarios, not forecasts) for current, 2050 and 2080 sea-level rise, at a mapped edge.
- South Street Seaport, Manhattan Flood 19 Fulton Street, Manhattan, NY
Lower Manhattan's waterfront: inside the Sandy extent, zone AE and the future high tide area of the DEP 2080 scenario.
This address is inside the 2012 Sandy inundation footprint, in FEMA flood zone AE on the 2007 effective map, and inside the future high tide category (coastal tidal inundation, not rainfall flooding) of the city's stormwater flood maps (modelled scenarios, not forecasts) for 2080 sea-level rise.
- Inwood, Manhattan Flood 4970 Broadway, Manhattan, NY
Upper Manhattan: outside every flood map, with Ida high-water marks surveyed within 800 m and FloodNet flood events logged nearby.
USGS surveyed 4 Hurricane Ida high-water marks within 800 m of this address; the highest stood 1.95 ft above ground.
- Community district QN12, Queens Flood QN12
A district on one page: 311 complaints about flooding and sewer backups by type, the share inside the Sandy extent and the city's stormwater scenarios, and the exposed schools, subway entrances and public housing by name.
4499 complaints to 311 about flooding and sewer backups were filed in Community District QN12 (by the record's community board field) in the last 3 years, since 2023-10-06, by 311 descriptor group: 2731 sewer backup, 1083 catch basin, 532 street flooding, 153 manhole overflow (a count of reports; a low count can mean under-reporting, not the absence of flooding).
- Community district BK06, Brooklyn Flood BK06
Red Hook, Gowanus, Carroll Gardens and Park Slope: a coastal and a rain-flooded part in one district.
949 complaints to 311 about flooding and sewer backups were filed in Community District BK06 (by the record's community board field) in the last 3 years, since 2023-10-06, by 311 descriptor group: 344 catch basin, 329 sewer backup, 159 street flooding, 117 manhole overflow (a count of reports; a low count can mean under-reporting, not the absence of flooding).
- Community district BX01, Bronx Flood BX01
Mott Haven, Melrose and Port Morris: a seventh of the district was inside the Sandy extent.
388 complaints to 311 about flooding and sewer backups were filed in Community District BX01 (by the record's community board field) in the last 3 years, since 2023-10-06, by 311 descriptor group: 196 sewer backup, 112 catch basin, 53 street flooding, 27 manhole overflow (a count of reports; a low count can mean under-reporting, not the absence of flooding).
- Hunts Point, Bronx Heat 355 Food Center Drive, Bronx, NY
A heat briefing for an address: the surface around an address in the Hunts Point wholesale food markets (not a residential block) ran warmer than the city's average in every clear summer Landsat image, with the neighbourhood's vulnerability index, tree canopy and the station record beside it.
The surface of the ground within 150 m of this address ran 12.4°F warmer than the city's land average over 18 clear summer Landsat images (surface temperature, not air temperature).
- Community district QN12, Queens Heat QN12
A district's heat on one page: measured surface temperature against the city's, the Health Department's index for each neighbourhood, heat illness visits, tree canopy and where to cool off.
This area scores 5 out of 5 on the Health Department's Heat Vulnerability Index, a rank among neighbourhoods and not a measurement.
- Community district SI01, Staten Island Heat SI01
The North Shore of Staten Island: the same heat briefing for a leafier district, read from the same records.
The surface of this area ran 1.1°F warmer than the city's land average over 18 clear summer Landsat images (surface temperature, not air temperature).