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Abstract

The map shows 3172 hydrometric stations, 1491 active and 1681 inactive, located on rivers and lakes across the country. All the stations on the map are situated in a drainage area of 200 square kilometres or more. For 1200 stations shown on the map, surface water level measurements are recorded in real time, every three hours daily, when in operation, although the number of stations recording data varies throughout the year. Hydrometric stations record information on the water level, flow velocity and discharge. Water level is the elevation at the water’s surface; flow velocity is the rate of water flow; and discharge is the amount of water flowing past a point in a unit of time. For both active and inactive stations recorded water data are available. The hydrometric network is run and operated through a federal-provincial cost-sharing program. The map also shows eleven major drainage areas, 164 sub–drainage areas and 626 watersheds.

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