Canada River Levels & Flood Watch

Real-time river and lake levels from Water Survey of Canada gauges near any postal code — trends, rise rates and multi-site flood watch for your AI agent.

For property managers, insurers, municipalities, farms, construction and outdoor businesses. Free: nearest gauges. Pro: 30-day trends and 25-site flood watch.

Tools

• river_levels (free) — FREE. Latest real-time river/lake water levels and flows at gauges within 25 km of a Canadian postal code. Nearest 3.
• gauge_trend (Pro) — PRO. Level/flow history for a station (up to 30 days): min, max, latest, 24h change and rise rate.
• flood_watch (Pro) — PRO. For up to 25 postal codes: nearest gauge and its 24-hour level change (rising sites first).

Live free example

river_levels {"postal_code":"M9N"}

{
  "postal_area": "M9N",
  "place": "Weston, ON",
  "gauges": 20,
  "nearest_3": [
    {
      "station": "02HC003",
      "name": "HUMBER RIVER AT WESTON",
      "level_m": null,
      "discharge_m3s": 2.7,
      "at": "2026-10-14T18:25:00Z",
      "km_away": 1.3
    },
    {
      "station": "02HC027",
      "name": "BLACK CREEK NEAR WESTON",
      "level_m": 0.423,
      "discharge_m3s": 0.445,
      "at": "2026-10-14T18:15:00Z",
      "km_away": 4.3
    },
    {
      "station": "02HC033",
      "name": "MIMICO CREEK AT ISLINGTON",
      "level_m": 5.593,
      "discharge_m3s": 0.223,
      "at": "2026-10-14T18:05:00Z",
      "km_away": 6.9
    }
  ],
  "pro": "30-day trends with rise rate, wider radius, 25-site flood watch: https://ca-river-levels-mcp.donniertf.workers.dev/buy",
  "disclaimer": "Provisional real-time water levels and flows from the Water Survey of Canada (ECCC MSC GeoMet API). Data are unverified. For flood safety follow provincial flood forecasting centres and local emergency guidance."
}

Connect (MCP)

Add https://ca-river-levels-mcp.donniertf.workers.dev/mcp to Claude, Cursor or any MCP client (Streamable HTTP, no login for the free tier). Subscribers pass access_token or Authorization: Bearer.

Important

Provisional real-time water levels and flows from the Water Survey of Canada (ECCC MSC GeoMet API). Data are unverified. For flood safety follow provincial flood forecasting centres and local emergency guidance.

Data sources & licences

• Water Survey of Canada real-time hydrometric data via ECCC MSC GeoMet OGC API (Open Government Licence – Canada)
• Zippopotam.us postal area geocoding

For AI agents

llms.txt · server card · pricing.json · POST /checkout → checkout URL · GET /token?session_id= → access token.

More Canada data MCPs

Save with Canada bundles: ca-mcp-bundles · GitHub hub.

Contact & cancelling

Questions, refunds or cancelling: dmorrisonwebdesign@gmail.com. Run by Donnie Morrison, UK. Payments by Stripe; we never see card details.