The North America Surface Water Values point dataset contains the current water level and stream flow values as recorded by Canadian and USA hydrometric gauging station locations. Daily values are recorded as well as comparisons with historical measurements, including difference in values from the previous day, the mean level for that calendar date, the annual mean water level, and maximum and minumum recorded levels. Percentile values based on historical average for both water level and stream flow are also included. Real-time gauging station data for Canada is available here: https://wateroffice.ec.gc.ca/search/statistics_e.html Real-time gauging station data for the United States is available here: https://waterservices.usgs.gov/rest/Statistics-Service.html

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

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.

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.

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.

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.

The “Stations used for Unit Runoff Analysis” dataset is a point data set for select hydrological stations that covers the extent of Canada.

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.

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.

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.