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02GA014 · ON · Drainage area 664 km² (HYDAT)
Near Orangeville, ON · 10-day flood forecast
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FlowAi's flood forecast for Grand River at Marsville, Ontario gives up to 10 days of flow, from AI-developed hydrological models driven by Environment and Climate Change Canada weather forecasts.
Latest daily reading (October 10, 2026): water level 3.3 m, flow 0.69 m³/s.
Not a substitute for official flood warnings. Gauge directory
Place names from GeoNames (geonames.org), licensed under CC BY 4.0.