MCP server for USGS Water Services (NWIS). Four tools: real-time streamflow, daily statistics, site metadata, and site search. No API key required.
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get_instantaneous_valuesReal-time readings (typically 15-minute cadence) from a USGS gauge. Returns one or more time series, by default discharge (00060, ft³/s) and gage height (00065, ft), over a relative period ending now. Use this to answer 'what is the river doing right now?'. USGS rejects historic dates on this endpo…Real-time readings (typically 15-minute cadence) from a USGS gauge. Returns one or more time series, by default discharge (00060, ft³/s) and gage height (00065, ft), over a relative period ending now. Use this to answer 'what is the river doing right now?'. USGS rejects historic dates on this endpo…
No input schema was published for this tool.
get_daily_valuesDaily statistics (default: mean) for one or more USGS gauges. Use this for any query that crosses days or asks about historic dates. Pass either `period` (relative-to-now) OR `start_date`/`end_date` (historic range), not both. For real-time sub-hour resolution prefer `get_instantaneous_values`. Ret…Daily statistics (default: mean) for one or more USGS gauges. Use this for any query that crosses days or asks about historic dates. Pass either `period` (relative-to-now) OR `start_date`/`end_date` (historic range), not both. For real-time sub-hour resolution prefer `get_instantaneous_values`. Ret…
No input schema was published for this tool.
get_site_infoReturns metadata for a single USGS gauging station: official name, coordinates, site type (stream/lake/groundwater/etc.), hydrologic unit (HUC), state/county codes, and gauge altitude. Use after `search_sites` finds candidate gauges, or to confirm a site number returned in someone's data.Returns metadata for a single USGS gauging station: official name, coordinates, site type (stream/lake/groundwater/etc.), hydrologic unit (HUC), state/county codes, and gauge altitude. Use after `search_sites` finds candidate gauges, or to confirm a site number returned in someone's data.
No input schema was published for this tool.
search_sitesFind active USGS stream-gauge sites by either (a) latitude/longitude/radius_km, or (b) US state postal code. Returns site numbers, names, coordinates, HUC, and altitude, feed the resulting site numbers into `get_instantaneous_values` or `get_daily_values`. Defaults filter to surface-water streams (…Find active USGS stream-gauge sites by either (a) latitude/longitude/radius_km, or (b) US state postal code. Returns site numbers, names, coordinates, HUC, and altitude, feed the resulting site numbers into `get_instantaneous_values` or `get_daily_values`. Defaults filter to surface-water streams (…
No input schema was published for this tool.
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MCP server for USGS Water Services (NWIS). Four tools: real-time streamflow, daily statistics, site metadata, and site search. No API key required.
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