usgs_daily_water_data
Access USGS historical daily water data for trend analysis. Retrieve aggregated daily averages of discharge, gage height, or water temperature using site numbers, state codes, and parameter codes.
Instructions
Get USGS daily value water data (historical daily averages). Unlike real-time instantaneous values, these are aggregated daily means — better for trend analysis. Parameter codes: 00060=discharge (cfs), 00065=gage height (ft), 00010=water temp (°C).
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| sites | No | USGS site number(s): '01646500' | |
| state_cd | No | Two-letter state code: 'CA', 'TX' | |
| parameter_cd | No | Parameter code: '00060' (discharge), '00065' (gage height). Default: 00060 | |
| period | No | ISO 8601 duration: 'P30D' (default), 'P90D', 'P365D' | |
| start_dt | No | Start date: '2024-01-01' (overrides period) | |
| end_dt | No | End date: '2024-12-31' |