COFFEE Model 5-day Forecast of Discharges and Return Periods

Note: This model is only updated when a rainfall event is occurring or forecast to occur over the coastal areas.

This map includes the following 3 layers: 1. COFFEE Model 5 Day Forecast - Maximum (current view); 2. COFFEE Model 5 Day Forecast - Average; and, 3. COFFEE Model 5 Day Forecast - Minimum.
Instruction: 1. To select a different layer or show the legend, scroll down to the bottom of the map, click the layer or legend icon. 2. Click on a station to show station information and the forecast maximum discharge/water level and return period in the next 5 days. 3. Click "More info" on the pop-up information window to view the forecast hydrograph for the station.

Click here to view the full screen map.

Colour Scheme for Return Periods:

Numerical Output of the COFFEE Model 5-day Forecasts:
  1. Northwest.  2. Skeena-Nass.  3. Central Coast.    4. South Coast.  5. Vancouver Island.

  1. Technical Reference for the COFFEE Model (1.6M PDF)
  2. Map of 10-day Forecast of Daily Average Temperature and 24H Precipitation (10 page PDF file)
  3. Map of Current Streamflow Conditions for All Real-time WSC Stations in BC
  4. Current Advisories and Flood Warnings
  5. Current Streamflow Conditions and Flood Forecast Modeling
  6. Home of River Forecast Centre

Terms of Use:
   The data provided by this web service is licensed under Open Government License - British Columbia.
   This web service is Copyright (c), Province of British Columbia. All rights reserved.
   The B.C. Map Hub and associated materials, including map applications ("Maps"), trade-marks and official marks (collectively, "Materials"), are owned or used under license by the Province of British Columbia ("Province") and are protected by copyright and trade-mark laws. Please see the Disclaimer for further details.
   The Province does not collect, use or disclose personal information through the ArcGIS Online website. Please be aware, however, that IP addresses are collected by Esri and are stored on Esri's servers located outside of Canada. For further information, including the purposes for which your IP address is collected, please see Esri's Privacy Policy. By accessing or using the B.C. Map Hub, you consent, effective as of the date of such access or use, to Esri storing and accessing your IP address outside of Canada for the purposes described in Esri's Privacy Policy. Should you have any questions about the collection of your IP address, please contact BCGov AGOL CONTACT at, PO BOX 9864 STN PROV GOVT, Victoria BC V8W 9T5.

Note of Data Sources:
  1. The observed discharge and water level data are provided by the Water Survey of Canada (Disclaimer for Hydrometric Information and Terms and conditions), and represent the most current reading between midnight and 8AM on the current date.
  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. Data shown on the map indicate the forecast range of discharge at a site for this forecast period.

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

  A. Observed Data: The observed 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.
  B. Forecast Data: These forecasts are derived from a hydrologic model using observed climate data from Environment and Climate Change Canada (ECCC) (Data License Agreement) and Province of British Columbia (Copyright) and Numerical Weather Prediction (NWP) GRIB2 data (Terms and conditions) from the Canadian Meteorological Centre (CMC), ECCC. The model and data have limitations, inaccuracies and errors. As such, values given in the above map should only be treated as estimates, are provided for guidance only, and are subject to change. The actual discharges or water levels observed will be different from the forecasts. Users of this data must accept all responsibility for their use and interpretation.