Gestion de l'eau
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La série d'ensembles de données « Ruissellement unitaire annuel au Canada selon AAC - 2013 » présente les tendances du ruissellement dans l'ensemble du pays au moyen d'isolignes du ruissellement unitaire annuel pour diverses probabilités de dépassement communément utilisées par les décideurs. Le ruissellement unitaire annuel est une mesure du volume d'eau de ruissellement par kilomètre carré. L'unité utilisée dans cette série d'ensembles de données est le décamètre cube (1000 m3) par kilomètre carré (dam3/km2), qui équivaut à une hauteur de précipitation de un millimètre sur le paysage. La série comprend un ensemble de données ponctuelles concernant les stations hydrométriques utilisées pour l'analyse du ruissellement unitaire, et sept ensembles de données présentant les isolignes ajustées pour les probabilités de dépassement de 10 %, 25 %, 50 %, 70 %, 75 %, 80 % et 90 %. Pour plus d'information, consulter : http://ouvert.canada.ca/data/fr/dataset/a905bafc-74b5-4ec5-b5f9-94b2e19815d0
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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.
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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.
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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.
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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.
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The “Stations used for Unit Runoff Analysis” dataset is a point data set for select hydrological stations that covers the extent of Canada.
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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.
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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.
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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.
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The “AAFC Annual Unit Runoff in Canada" 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.