Flood map coverage in District of Columbia

FEMA's National Flood Hazard Layer holds 38 FIRM panels for District of Columbia from 1 digital flood map database, reaching 1 of its 1 counties. Computed September 29, 2026.

38FIRM panels

100%took effect before September 29, 2016

2010-09-27newest panel (1100010008C)

12LOMRs in effect

What to expect from lookups here

Every county has at least one digital FIRM in the NFHL.
The map that has gone longest without a new panel is District of Columbia (110001), last revised 2010-09-27.

A real lookup in District of Columbia

The point is the center of FIRM panel 1100010008C, District of Columbia's most recently effective printed panel. FEMA's map puts it in zone X (area of minimal flood hazard). Recorded September 29, 2026.

Request

curl -sG https://api.floodzoneapi.com/api/v1/flood/zone \
  -H "Authorization: Bearer $FZA_KEY" \
  -d lat=38.95313 -d lon=-77.04688

Response 200

{
  "query": {
    "lat": 38.95313,
    "lon": -77.04688
  },
  "location": {
    "lat": 38.95313,
    "lon": -77.04688,
    "geocoder": null,
    "precision": "input_coordinates",
    "matched_address": null,
    "candidates": null,
    "county": null,
    "county_fips": null,
    "state": null
  },
  "flood_zone": {
    "mapped": true,
    "zone": "X",
    "subtype": "AREA OF MINIMAL FLOOD HAZARD",
    "description": "Area of minimal flood hazard. Outside the Special Flood Hazard Area.",
    "sfha": false,
    "static_bfe": null,
    "depth": null,
    "dfirm_id": "110001",
    "polygon_id": "110001_945",
    "at_zone_boundary": false,
    "other_zones": []
  },
  "firm_panel": {
    "panel": "1100010008C",
    "effective_date": "2010-09-27",
    "panel_type": "Countywide, Panel Printed",
    "dfirm_id": "110001",
    "other_panels": [
      {
        "panel": "24033C0110E",
        "effective_date": "2016-09-16",
        "panel_type": "Countywide, Not Printed",
        "dfirm_id": "24033C"
      },
      {
        "panel": "51059C0200E",
        "effective_date": "2010-09-17",
        "panel_type": "Countywide, Not Printed",
        "dfirm_id": "51059C"
      },
      {
        "panel": "24031C0460D",
        "effective_date": "2006-09-29",
        "panel_type": "Countywide, Panel Printed",
        "dfirm_id": "24031C"
      }
    ]
  },
  "source": {
    "dataset": "FEMA National Flood Hazard Layer (NFHL)",
    "service": "https://hazards.fema.gov/arcgis/rest/services/public/NFHL/MapServer",
    "layers": [
      {
        "id": 28,
        "name": "Flood Hazard Zones"
      },
      {
        "id": 3,
        "name": "FIRM Panels"
      }
    ],
    "query_point": {
      "lat": 38.95313,
      "lon": -77.04688
    },
    "queried_at": "2026-09-29T08:36:18Z",
    "cached": true,
    "cache_ttl_seconds": 86400
  },
  "notice": "Informational. This is the zone shown on FEMA's effective flood map (NFHL) at this point. It is not a Standard Flood Hazard Determination (FEMA Form 086-0-32), a prediction of flood risk, or an insurance quote, and it does not reflect a Letter of Map Amendment issued for a single structure."
}

Every digital flood map in District of Columbia

Dates are panel effective dates (YYYY-MM-DD). "Placeholder" means FEMA's record carries a non-date such as 9999-09-09. "Over 10 years old" counts panels effective before September 29, 2016. "LOMRs in effect" are Letters of Map Revision not yet folded into a new FIRM. The DFIRM ID appears in responses as `flood_zone.dfirm_id` and `firm_panel.dfirm_id`.
Map	DFIRM ID	ID type	Panels	Newest panel	Oldest panel	Over 10 years old	LOMRs in effect
District of Columbia	110001	Community-numbered	38	2010-09-27	2010-09-27	38	12

Source: FEMA NFHL layers 1, 3 and 22 and the Census Bureau county gazetteer, computed September 29, 2026. All states · API reference