USGS Water Resources
Real-time and historical water monitoring data from the US Geological Survey. Streamflow, groundwater levels, and water quality readings for thousands of active monitoring sites across all 50 states.
4 subscribers
60 ms avg latency
6 endpoints
The in-depth APIMemo review for this API hasn't been published yet —
the data below comes straight from the public marketplace listing.
USGS Water Resources endpoints
| Method | Endpoint | Description |
|---|---|---|
| Streamflow | ||
| GET |
streamflow_site_streamflow_site__site_number__get /streamflow/site/{site_number} |
Returns daily mean streamflow values for a specific USGS monitoring site. Defaults to the last 30 days. Site numbers are 8-digit USGS identifiers. Historical data is cached for 1… |
| GET |
streamflow_current_streamflow_current_get /streamflow/current |
Returns real-time streamflow (discharge) readings in cubic feet per second (cfs) for all active stream gauges in the specified state. Data is cached for 15 minutes. |
| Sites | ||
| GET |
list_sites_sites_get /sites |
Returns a list of active USGS water monitoring sites for a given state. Filter by type: 'stream' for streamflow gauges, 'groundwater' for groundwater wells. Results come from the… |
| Groundwater | ||
| GET |
groundwater_levels_groundwater_levels_get /groundwater/levels |
Returns the most recent groundwater level readings for active monitoring wells in the specified state. Values are depth-to-water in feet below land surface. Data cached for 15… |
| Water Quality | ||
| GET |
water_quality_water_quality_get /water-quality |
Returns real-time water quality readings for active monitoring sites in the specified state. Available parameters: streamflow (cfs), temperature (°C), oxygen (mg/L), ph (standard… |
| Meta | ||
| GET |
stats_stats_get /stats |
Returns summary statistics: total sites indexed, number of states covered, breakdown by site type, and API status. |
USGS Water Resources pricing
| Plan | Price | Rate limit | Quotas |
|---|---|---|---|
| BASIC | Free | — |
|
| PRO | $15 / month | — |
|
| ULTRA Recommended | $39 / month | — |
|
| MEGA | $99 / month | — |
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