Query real-time and historical water data from ~8,000 USGS stream gages and groundwater wells via MCP. STDIO or Streamable HTTP.
Latest release v0.4.0 — v0.4.0: Site series discovery and timeout recovery · 20 Oct 2026
2 files for Codex, OpenCode and Claude Code: usgs-water-mcp-server AGENTS.md, usgs-water-mcp-server CLAUDE.md — 11,434 tokens loaded in every session.
AGENTS.md A 5,717 tok CLAUDE.md A 5,717 tok These files are cyanheads/usgs-water-mcp-server's own configuration — they tell Codex, OpenCode and Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.