Description

This polygon layer displays 84-hour accumulated precipitation forecasts from the Regional Deterministic Prediction System (RDPS), aggregated at the sub-basin level. This layer helps hydrologists, water resource managers, and emergency responders identify watersheds with potentially higher rainfall or snowfall, facilitating short-term flood risk analysis and operational planning. Model & Domain: The RDPS is Environment and Climate Change Canada’s regional numerical weather prediction model, running at ~10 km resolution to capture mesoscale weather patterns over Canada and adjacent regions. Forecast Integration: It produces short-range forecasts (up to 84 hours), updated 4 times daily with boundary conditions from the global GEM model (GDPS). Sub-Basin Aggregation: This layer averages forecasted precipitation across each sub-basin polygon, providing a convenient snapshot of expected accumulations for hydrological modeling and water management. Key Applications:Flood Forecasting – Identifying basins at risk of heavy runoff. Resource Allocation – Positioning crews and equipment in vulnerable watersheds. Planning – Adapting reservoir release schedules, urban drainage controls, and agricultural activities

Resources

Name	Format	Description	Link
CSV	CSV		https://geoportal.gov.mb.ca/api/download/v1/items/0e74476ac32744679ff1d6075dd7142e/csv?layers=0
GeoJSON	GeoJSON		https://geoportal.gov.mb.ca/api/download/v1/items/0e74476ac32744679ff1d6075dd7142e/geojson?layers=0
KML	KML		https://geoportal.gov.mb.ca/api/download/v1/items/0e74476ac32744679ff1d6075dd7142e/kml?layers=0
Shapefile	ESRI Shape		https://geoportal.gov.mb.ca/api/download/v1/items/0e74476ac32744679ff1d6075dd7142e/shapefile?layers=0
original metadata (https://geoportal.gov.mb.ca)	HTML		https://geoportal.gov.mb.ca/datasets/manitoba::forecasted-basin-average-accumulated-precipitation-rdps-84-hrs
ArcGIS GeoService	Ersi REST		https://services.arcgis.com/mMUesHYPkXjaFGfS/arcgis/rest/services/RDPS_SubBasins_Precipitation_Distribution_84_hrs/FeatureServer/0
ArcGIS GeoService	Ersi REST		https://services.arcgis.com/mMUesHYPkXjaFGfS/arcgis/rest/services/RDPS_SubBasins_Precipitation_Distribution_84_hrs/FeatureServer/0

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