Ministry of Forests, Lands and Natural Resouce Operations' Services

Map of Streamflow Return Periods for All WSC Stations (02:34 PM, Friday July 21, 2017)

Please use the Google Chrome browser for faster and correct loading. Place the mouse cursor on a station to show station information and current reading (updated at 02:34 PM, Friday July 21, 2017) and the return period. Click on the station to view WSC's real-time data.

Colour Scheme for Return Periods:

Note of Data Sources:
1. The river discharges and water levels are from Water Survey of Canada (Disclaimer for Hydrometric Information and Terms and conditions) and represent the readings at the time displayed in the parentheses behind the map title.
2. Return Periods are expressed in years and reflect the expected discharge rate associated with the statistical probability of a given discharge occurring in any year based on the historical record for a given station. More information on Return Periods. Data shown on the map indicate the expected range of discharge conditions at a site for the day.

Users should use the information on this map with caution and do so at their own risk. The data are collected in near-real-time by automated monitors at numerous remote locations and are unverified. The data are preliminary, and may be changed upon subsequent review. Some data may be wrong. It is not uncommon for individual water level recorders to give false readings, due to local conditions. The return period estimates presented on this map are preliminary and are often based on limited data. They should be considered as reference values only, by which to evaluate the current readings. They should not be used for design or other purposes. Users of this data must accept all responsibility for the use and interpretation.

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