waterdata.dev
Datasets
3 datasets, each with a chart or preview, downloads and an API.
Machine-readable: /v1/catalog
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County drought categories
Weekly percent of each US county's area in each US Drought Monitor category over the last 400 days: none, D0 abnormally dry, D1 moderate, D2 severe, D3 extreme and D4 exceptional drought. The categories don't overlap and add up to 100.
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USGS stream gages
Every USGS stream gage (streams, canals, ditches and tidal streams) that reported a daily mean discharge in the last 400 days: name, state, county, hydrologic unit, coordinates, drainage area and period of daily record. These are the gages in streamflow-daily, under the same ids.
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Daily streamflow
Daily mean discharge at every USGS stream gage over the last 400 days, flagged provisional, estimated or ice-affected, with the USGS qualifier codes. Re-read in full every day, because USGS revises provisional values for months.
At a glance
| Dataset | Kind | Updates | Source | License | Commercial use |
|---|---|---|---|---|---|
| County drought categories | Time series | Weekly | National Drought Mitigation Center, University of Nebraska-Lincoln | USDM terms (credit required) | Allowed |
| USGS stream gages | Table | Daily | U.S. Geological Survey | US Government work | Allowed |
| Daily streamflow | Time series | Daily | U.S. Geological Survey | US Government work | Allowed |