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io.github.cyanheads/usgs-water-mcp-server

io.github.cyanheads/usgs-water-mcp-server · v0.4.0

Measured by MCP Station

Description written by the publisher, not verified

Query real-time and historical USGS water data from ~8,000 stream gages and groundwater wells.

Connect

claude mcp add --transport http usgs-water-mcp-server https://usgs-water.caseyjhand.com/mcp

{
  "mcpServers": {
    "usgs-water-mcp-server": {
      "url": "https://usgs-water.caseyjhand.com/mcp"
    }
  }
}

Tools as reported by the server

• water_list_parameters
  Look up USGS parameter codes — the 5-digit codes every other tool's parameterCd takes. With no query, lists a curated set of well-known codes with names, units, and thematic group, from a built-in table (no network call): 00060 = "Discharge" (ft³/s), 00065 = "Gage height" (ft), 00010 = "Temperature,
• water_find_sites
  Find USGS water monitoring sites by bounding box, state, county, or HUC watershed code, filtered by site type and parameter availability. Returns site numbers, names, coordinates, types, altitude, and (in expanded mode) drainage area. Call this first — water_get_readings, water_get_series, and water
• water_get_readings
  Get the latest instantaneous (~15-min, real-time) values for up to 100 USGS sites in one call — per-site, per-parameter records with timestamp, value, unit, and provisional/approved qualifiers. Omitting parameterCd returns every parameter each site publishes. A site measuring one parameter with seve
• water_get_series
  Get a daily or instantaneous time series for one USGS site and parameter over a date range, as time-ordered value records. NWIS can hold several series for one query — one per daily statistic (mean, maximum, minimum) and one per sensor (method); this returns one, reporting its statCd and methodId, a
• water_get_site_data_catalog
  Discover a USGS site’s parameters, sensors, statistics, and UTC record bounds before calling water_get_series. Find site numbers with water_find_sites. Each row is a distinct series; metadata bounds may contain gaps and lag observations. For water_get_series, take YYYY-MM-DD from beginDate/endDate,
• water_get_conditions
  Get a USGS site's current reading ranked against its full period-of-record daily-mean percentiles for the same calendar day — a "how unusual is this" percentileClass (record-high to record-low), not a flood-stage or drought determination (this tool fetches no authoritative thresholds). The reading i
• water_dataframe_query
  Run a read-only SQL SELECT against water data tables staged on a DataCanvas by water_get_series or water_find_sites. Workflow: run water_get_series or water_find_sites (get canvas_id + table_name) → water_dataframe_describe (confirm the table and its columns) → water_dataframe_query (SQL analysis),
• water_dataframe_describe
  List tables and columns staged on a DataCanvas by water_get_series or water_find_sites. Call this after water_get_series or water_find_sites returns a canvas_id to discover the exact table name and column types before writing a query. Then pass the table name to water_dataframe_query, or to water_da

Tool changes

• 2026-10-21: water_list_parameters, water_find_sites, water_get_readings, water_get_series, water_get_site_data_catalog, water_get_conditions, water_dataframe_query, water_dataframe_describe
• 2026-10-16: water_list_parameters, water_find_sites, water_get_readings, water_get_series, water_get_conditions, water_dataframe_query, water_dataframe_describe

Repository · JSON · Text for agents · Registry updated 2026-10-20