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Found 10 records similar to Annual runoff

Federal

The “AAFC Annual Unit Runoff in Canada - 2013” data series illustrates runoff trends across the country by isolines of annual unit runoff for a variety of probabilities of exceedence commonly used by decision makers Annual unit runoff is a measure of runoff volume per square kilometre. This series uses units of cubic decametres (1000 m3) per square kilometre (dam3/km2), which is equivalent to millimetres depth on the landscape. It includes a point data set for the hydrologic stations that were analyzed and seven sets of line work to show the adjusted isolines for 10%, 25%, 50%, 70%, 75%, 80%, and 90% probability of exceedence.

Last Updated: Jul. 27, 2021
Date Published: May 29, 2013
Organization: Agriculture and Agri-Food Canada
Formats: WMS PDF FGDB/GDB ESRI REST GML
Keywords:  Water management, Water, Water supply, Watersheds, Hydrology
Federal

The map shows isolines for the annual precipitation and the annual evapotranspiration (in millimetres). Water is normally supplied by precipitation and lost through the processes of evapotranspiration and runoff or it may remain as surface or subsurface storage. Over long periods, generally several years or more, changes in water storage for any particular region may be neglected, and the precipitation (P) is "balanced" by evapotranspiration (E) and runoff (N). The concept of a water balance was first introduced in the literature by Thornthwaite in 1944 as a means of calculating evapotranspiration.

Last Updated: Feb. 22, 2022
Date Published: Jan. 1, 1978
Organization: Natural Resources Canada
Formats: PDF JPG
Keywords:  evaporation, evapotranspiration, hydrology, precipitation, water balance
Federal

The “Annual Unit Runoff (dam3/km2) for a 50% Probability of Exceedence” dataset is a line data set that covers the extent of Canada. It shows the 50% Probability of exceedence annual unit runoff.

Last Updated: Jul. 27, 2021
Date Published: May 29, 2013
Organization: Agriculture and Agri-Food Canada
Formats: WMS PDF FGDB/GDB ESRI REST GML
Keywords:  Hydrology, Water management, Water supply, Watersheds
Federal

The “Annual Unit Runoff (dam3/km2) for a 10% Probability of Exceedence” dataset is a line data set that covers the extent of Canada. It shows the 10% Probability of exceedence annual unit runoff.

Last Updated: Jul. 27, 2021
Date Published: May 29, 2013
Organization: Agriculture and Agri-Food Canada
Formats: WMS PDF FGDB/GDB ESRI REST GML
Keywords:  Hydrology, Water management, Water supply, Watersheds
Federal

The “Annual Unit Runoff (dam3/km2) for a 80% Probability of Exceedence” dataset is a line data set that covers the extent of Canada. It shows the 80% Probability of exceedence annual unit runoff.

Last Updated: Jul. 27, 2021
Date Published: May 29, 2013
Organization: Agriculture and Agri-Food Canada
Formats: WMS PDF FGDB/GDB ESRI REST GML
Keywords:  Hydrology, Water management, Water supply, Watersheds
Federal

The “Annual Unit Runoff (dam3/km2) for a 70% Probability of Exceedence” dataset is a line data set that covers the extent of Canada. It shows the 70% Probability of exceedence annual unit runoff.

Last Updated: Dec. 9, 2020
Date Published: May 29, 2013
Organization: Agriculture and Agri-Food Canada
Formats: WMS PDF FGDB/GDB ESRI REST GML
Keywords:  Hydrology, Water management, Water supply, Watersheds
Federal

The “Annual Unit Runoff (dam3/km2) for a 90% Probability of Exceedence” dataset is a line data set that covers the extent of Canada. It shows the 90% Probability of exceedence annual unit runoff.

Last Updated: Jul. 27, 2021
Date Published: May 29, 2013
Organization: Agriculture and Agri-Food Canada
Formats: WMS PDF FGDB/GDB ESRI REST GML
Keywords:  Hydrology, Water management, Water supply, Watersheds
Federal

The “Annual Unit Runoff (dam3/km2) for a 25% Probability of Exceedence” dataset is a line data set that covers the extent of Canada. It shows the 25% Probability of exceedence annual unit runoff.

Last Updated: Jul. 27, 2021
Date Published: May 29, 2013
Organization: Agriculture and Agri-Food Canada
Formats: WMS PDF FGDB/GDB ESRI REST GML
Keywords:  Hydrology, Water management, Water supply, Watersheds
Federal

The “Annual Unit Runoff (dam3/km2) for a 75% Probability of Exceedence” dataset is a line data set that covers the extent of Canada. It shows the 75% Probability of exceedence annual unit runoff.

Last Updated: Jul. 27, 2021
Date Published: May 29, 2013
Organization: Agriculture and Agri-Food Canada
Formats: WMS PDF FGDB/GDB ESRI REST GML
Keywords:  Hydrology, Water management, Water supply, Watersheds
Federal

The plate contains four maps of 60 minute rainfalls (in millimetres) for a 2 year return period, a 5 year return period, a 10 year return period and a 25 year return period. Each map has a detailed inset of the Vancouver area. These four maps were not analyzed for the mountainous parts of Canada in British Columbia and the Yukon because of the limited number of stations, the non-representative nature of the valley stations and the variability of precipitation owing to the orographic effects. From the incomplete data, it is impossible to draw accurate isolines of short duration rainfall amounts on maps of national scale.

Last Updated: Feb. 22, 2022
Date Published: Jan. 1, 1978
Organization: Natural Resources Canada
Formats: PDF JPG
Keywords:  climate, hydrology, precipitation, water balance
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