Map of Current Streamflow Conditions for All Real-time Stations in BC

This map includes the following 4 layers: (1) Discharge/Water Level Return Period - All Stations (current view); (2) Discharge/Water Level Return Period =2Y and Up; (3) % of Mean Annual Discharge - All Stations; and, (4) % of Mean Annual Discharge below 50%.

Instruction: 1. To select a different layer or show the legend, click the layer or legend icon in the top-left corner. 2. Click on a station to show station information and current reading, the return period, or % of mean annual discharge (MAD). 3. Click "More info" on the pop-up information window to view the WSC's real-time hydrometric data or B.C. Real-time Water Data for the station.

Click here to view the full screen map.

Colour Scheme for Return Periods:


  1. Home of River Forecast Centre
  2. Current and forecast streamflows
  3. Current Advisories and Flood Warnings
  4. Map of 10-day Forecast of Daily Average Temperature and 24H Precipitation (10 page PDF file)
  5. CLEVER Model 10-day Forecast of Discharges and Return Periods
  6. COFFEE Model 5-day Forecast of Discharges and Return Periods
  7. Map of ELF Model 30-Day Low Streamflow Forecast
  8. Map of 7-Day Average Streamflow

Terms of Use:
   The data provided by this web service is licensed under Open Government License - British Columbia.
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Note of Data Sources:

  1. The river discharges and water levels are from Water Survey of Canada (WSC) real-time hydrometric data (Disclaimer for Hydrometric Information), B.C. Real-time Water Data, and USGS Real-time Water Data (USGS Policies and Notices) as they are. They represent the readings at the time displayed on the top-right hand corner of the map.
  2. Return Periods are expressed in years and reflect the discharge rate associated with the statistical probability of the annual maximum discharge of the historical record for a given station. The return periods are calculated based on the historical records and the provisional data from WSC for a given station. Data shown on the map and data layers reflect the current range of discharges or water level for a station at the update time.

Users should use the information on this map with caution and do so at their own risk.

The data used on the map are from the Water Survey of Canada (WSC) real-time hydrometric data, B.C. Real-time Water Data, and USGS Real-time Water Data as they are. The data are collected by automated monitors at numerous remote locations and are unverified. The data are provisional or 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 periods for flows (discharges and/or water levels) presented on this map are preliminary and are often based on limited data. They should be considered as reference values only, which are used to show the relative magnitudes of the current readings. They should not be used for design or other purposes under any circumstances. Users of this data must accept all responsibility for the use and interpretation.