Forecasted Basin-Average Accumulated Precipitation (GDPS - 168 hrs / 240 hrs)

This polygon layer presents 7‑day and 10‑day accumulated precipitation forecasts from the Global Deterministic Prediction System (GDPS), aggregated by sub-basin. It is designed to help hydrologists, water resource managers, and emergency planners pinpoint watersheds facing higher rainfall or snowfall totals in the medium-to-long range, enabling proactive flood risk assessment, drought monitoring, and resource allocation.

Developed by Environment and Climate Change Canada (ECCC), the GDPS is a global numerical weather prediction model running at approximately 15km resolution, updated twice daily (00Z and 12Z). This layer integrates 168-hour (7‑day) and 240-hour (10‑day) precipitation forecasts into sub-basin polygons, offering a comprehensive view of expected cumulative precipitation. By focusing on watershed boundaries, decision-makers can quickly gauge regional vulnerabilities to prolonged rainfall or snowfall events.

Key highlights:

  • Global Model Insight: Captures large-scale, multi-day weather systems (e.g., atmospheric rivers, persistent low-pressure systems).
  • Sub-Basin Aggregation: Delivers averaged precip values per basin, simplifying hydrological analysis for flood or drought outlooks.
  • Extended Outlook: Spanning from day 0 to day 10, covers both medium- and longer-term forecast horizons, essential for strategic planning and mitigation efforts.
  • Typical Uses:
    • Flood Forecasting – Identifying basins prone to heavy or prolonged precipitation.
    • Water Resource Management – Adjusting reservoir release schedules or irrigation planning based on expected accumulations.
    • Emergency Preparedness – Deploying resources or issuing advisories in vulnerable watersheds.

Datasets available for download

Additional Info

Field Value
Last Updated September 21, 2026, 07:03 (UTC)
Created March 25, 2026, 01:46 (UTC)
Domain / Topic
Domain or topic of the dataset being cataloged.
Title
Title for the Dataset.
Forecasted Basin-Average Accumulated Precipitation (GDPS - 168 hrs / 240 hrs)
Description
A description of the dataset.

This polygon layer presents 7‑day and 10‑day accumulated precipitation forecasts from the Global Deterministic Prediction System (GDPS), aggregated by sub-basin. It is designed to help hydrologists, water resource managers, and emergency planners pinpoint watersheds facing higher rainfall or snowfall totals in the medium-to-long range, enabling proactive flood risk assessment, drought monitoring, and resource allocation.

Developed by Environment and Climate Change Canada (ECCC), the GDPS is a global numerical weather prediction model running at approximately 15km resolution, updated twice daily (00Z and 12Z). This layer integrates 168-hour (7‑day) and 240-hour (10‑day) precipitation forecasts into sub-basin polygons, offering a comprehensive view of expected cumulative precipitation. By focusing on watershed boundaries, decision-makers can quickly gauge regional vulnerabilities to prolonged rainfall or snowfall events.

Key highlights:

  • Global Model Insight: Captures large-scale, multi-day weather systems (e.g., atmospheric rivers, persistent low-pressure systems).
  • Sub-Basin Aggregation: Delivers averaged precip values per basin, simplifying hydrological analysis for flood or drought outlooks.
  • Extended Outlook: Spanning from day 0 to day 10, covers both medium- and longer-term forecast horizons, essential for strategic planning and mitigation efforts.
  • Typical Uses:
    • Flood Forecasting – Identifying basins prone to heavy or prolonged precipitation.
    • Water Resource Management – Adjusting reservoir release schedules or irrigation planning based on expected accumulations.
    • Emergency Preparedness – Deploying resources or issuing advisories in vulnerable watersheds.
Tags / Keywords
Keywords/tags categorizing the dataset.
Format (CSV, XLS, TXT, PDF, etc)
File format of the dataset.
Dataset Size
Dataset size in megabytes.
11808.0
Metadata Identifier
Metadata identifier – can be used as the unique identifier for catalogue entry
Published Date
Published date of the dataset.
2025-03-12
Time Period Data Span (start date)
Start date of the data in the dataset.
Time Period Data Span (end date)
End date of time data in the dataset.
GeoSpatial Area Data Span
A spatial region or named place the dataset covers.
Field Value
Access category
Type of access granted for the dataset (open, closed, service, etc).
public
License
License used to access the dataset.
Manitoba Open Data Licence
Limits on use
Limits on use of data.
Location
Location of the dataset.
https://geoportal.gov.mb.ca/datasets/manitoba::forecasted-basin-average-accumulated-precipitation-gdps-168-hrs-240-hrs
Data Service
Data service for accessing a dataset.
Owner
Owner of the dataset.
Manitoba_Government
Contact Point
Who to contact regarding access?
Manitoba Maps
Contact Point Email
The email to contact regarding access?
[email protected]
Publisher
Publisher of the dataset.
Manitoba Maps
Publisher Email
Email of the publisher.
Author
Author of the dataset.
Manitoba_Government
Author Email
Email of the author.
Accessed At
Date the data and metadata was accessed.
2026-09-21
Field Value
Identifier
Unique identifier for the dataset.
24b11a375afa475d9925d705fdb14e11
Language
Language(s) of the dataset
English
Link to dataset description
A URL to an external document describing the dataset.
https://geoportal.gov.mb.ca/datasets/manitoba::forecasted-basin-average-accumulated-precipitation-gdps-168-hrs-240-hrs
Persistent Identifier
Data is identified by a persistent identifier.
Globally Unique Identifier
Data is identified by a persistent and globally unique identifier.
Contains data about individuals
Does the data hold data about individuals?
Contains data about identifiable individuals
Does the data hold identifiable data about individual?
Contains Indigenous Data
Does the data hold data about Indigenous communities?
Portal Type
Platform type of the source portal.
Field Value
Version
Version of the datatset
None
Source
Source of the dataset.
None
Version notes
Version notes about the dataset.
Is version of another dataset
Link to dataset that it is a version of.
Other versions
Link to datasets that are versions of it.
Provenance Text
Provenance Text of the data.
Manitoba Maps
Provenance URL
Provenance URL of the data.
Temporal resolution
Describes how granular the date/time data in the dataset is.
GeoSpatial resolution in meters
Describes how granular (in meters) geospatial data is in the dataset.
GeoSpatial resolution (in regions)
Describes how granular (in regions) geospatial data is in the dataset.
Field Value
Indigenous Community Permission
Who holds the Indigenous Community Permission. Who to contact regarding access to a dataset that has data about Indigenous communities.
Community Permission
Community permission (who gave permission).
The Indigenous communities the dataset is about
Indigenous communities from which data is derived.
Field Value
Number of data rows
If tabular dataset, total number of rows.
34
Number of data columns
If tabular dataset, total number of unique columns.
20
Number of data cells
If tabular dataset, total number of cells with data.
680
Number of data relations
If RDF dataset, total number of triples.
Number of entities
If RDF dataset, total number of entities.
Number of data properties
If RDF dataset, total number of unique properties used by the triples.
Data quality
Describes the quality of the data in the dataset.
Metric for data quality
A metric used to measure the quality of the data, such as missing values or invalid formats.

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