Data source · NOAA National Weather Service

NOAA National Water Model Operational Outputs

Operational NWM analysis and forecast output family published as NetCDF files. Terrain-routing grids directly emit modelled ponded-water depth (sfcheadsubrt) in millimetres at 250 m for CONUS and southern Alaska and 100…

FreeFull fileMulti-countryPuerto RicoUnited StatesVirgin Islands, U.S.

What it answers ↓

2Questions answered

1Fields delivered

3Countries

Questions this answers

2 · best fit first

QuestionStrong fit

Flood forecast depth and timing

Open 250 m/100 m operational grids emit modeled ponded-water depth with initialization, valid time, configuration, NWM version, and code version; this is grid-cell model output, not observed parcel depth.

QuestionSupporting fit

Flood inundation during the event

NOAA operational NWM terrain-routing NetCDF grids provide modelled ponded-water depth in mm at 250 m for CONUS/southern Alaska and 100 m for Hawaii/Puerto Rico/USVI. Configuration, initialization, valid time, release, and code version pin the result. Occurrence use is restricted to analysis-and-assimilation files; forecasts are prospective, and no mode is direct observation or building-specific depth.

Fields it delivers

1 field

Ponded water depth

CoverageMulti-country

The operational NWM documentation covers CONUS, Alaska, Hawaii, Puerto Rico, and the U.S. Virgin Islands. Puerto Rico and the U.S. Virgin Islands are stored as standalone ISO countries under the project rule.

Access & termsFree

The cited first-party source provides a direct public download, API, or data-service route with no checkout, subscription purchase, or stated access fee. The standing route is free; the retired open-rights evidence remains relevant only to license terms.

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