Global Forecast System 7-Day Precipitation Averages for Watershed Basins

Forecasted basin-average accumulated precipitation from the Global Forecast System (GFS) over a 168-hour period. This polygon layer is created by overlaying GFS APCP raster data with global watershed boundaries and computing zonal statistics. The dataset is provided by the Government of Manitoba and was last updated on March 18, 2026.

Use Cases

• Modeling flood risk based on forecasted precipitation averages per watershed sub-basin.
• Planning water resource allocation based on 7-day global rainfall and snowfall patterns.
• Supporting international disaster preparedness initiatives with spatial precipitation forecasts.

Strengths

• Data is derived from the Global Forecast System (GFS), a major weather model.
• Covers a global spatial extent for watershed analysis.
• Available in multiple geospatial formats including KML, SHP, and GeoJSON.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic or model bias inherent to the GFS source.

Provenance

Source

Government of Manitoba

Collection Method

GFS model output processed into APCP rasters, combined with watershed boundary data, with zonal statistics applied.

Time Range

7-day (168-hour) forecast period.

Freshness

Last updated 2026-03-18 11:31:21.474971; freshness should be verified.

Geography

Global watershed sub-basins.