Columbia River above Grand Coulee Dam
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
Sender
Sent
- Warning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.No secondary data available. Transformations for Flow data and a secondary Y axis cannot be made at this time.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 04/03/2025 2:00 AM PDTOfficial Forecast (FCST) 04/02/2025 4:22 PM PDTLow Threshold: 1250 ftReliability of the Forecast:
NOTE: Forecasts are issued routinely year-round.
Gauge reading affected by reservoir operations.
National Water Model Hydrograph
Official NWS streamflow forecasts are produced by NWS hydrologic forecasters for river gauge locations using hydrologic models which are calibrated to that location. This process considers additional guidance and information, including local expertise and experience, to produce the best forecast possible. The NWM output provides supplemental guidance to NWS forecasters and should not be considered an official NWS river forecast.
Gauge Info
| Coordinates | 47.9556, -118.984 |
| RFC | NWRFC |
| State | WA |
| WFO | OTX |
| County | Grant |
| Data Provider(s) | |
| US Bureau of Reclamation | Pacific Northwest Region |
| USBR | GCL |
Gauge Location
Recent Crests
| 1. | 1289.60 ft | on 07-08-2018 |
| 2. | 1289.67 ft | on 07-09-2017 |
| 3. | 1288.44 ft | on 06-21-2016 |
| 4. | 1289.62 ft | on 07-13-2015 |
| 5. | 1289.57 ft | on 07-13-2014 |
Recent Crests
| 1. | 1289.60 ft | on 07-08-2018 |
| 2. | 1289.67 ft | on 07-09-2017 |
| 3. | 1288.44 ft | on 06-21-2016 |
| 4. | 1289.62 ft | on 07-13-2015 |
| 5. | 1289.57 ft | on 07-13-2014 |
| 6. | 1289.71 ft | on 07-12-2013 |
| 7. | 1290.36 ft | on 08-06-1976 |
| 8. | 1290.30 ft | on 06-03-1945 |
| 9. | 1290.30 ft | on 07-17-1942 |
Historic Crests
| 1. | 1290.36 ft | on 08-06-1976 |
| 2. | 1290.30 ft | on 06-03-1945 |
| 3. | 1290.30 ft | on 07-17-1942 |
| 4. | 1289.71 ft | on 07-12-2013 |
| 5. | 1289.67 ft | on 07-09-2017 |
Historic Crests
| 1. | 1290.36 ft | on 08-06-1976 |
| 2. | 1290.30 ft | on 06-03-1945 |
| 3. | 1290.30 ft | on 07-17-1942 |
| 4. | 1289.71 ft | on 07-12-2013 |
| 5. | 1289.67 ft | on 07-09-2017 |
| 6. | 1289.62 ft | on 07-13-2015 |
| 7. | 1289.60 ft | on 07-08-2018 |
| 8. | 1289.57 ft | on 07-13-2014 |
| 9. | 1288.44 ft | on 06-21-2016 |
Low Water Records
Low Water Records
Vertical Datum Table
| type | NGVD29 |
|---|---|
| major Flooding | N/A |
| moderate Flooding | N/A |
| minor Flooding | N/A |
| action | N/A |
| Latest Value | 2600.70 ft |
| Gauge Zero | 1324.00 ft |
Gauge Photos
No Images Found
Unique Local Info
WSDOT Keller Ferry information http://www.wsdot.wa.gov/Regions/Eastern/KellerFerry Bureau of Rec Lake Level website http://www.usbr.gov/pn/grandcoulee/lakelevel/index.html National Park Service boat ramp information http://www.nps.gov/laro/planyourvisit/boating.htm#CP_JUMP_61961 High flow operations when flows > 300 Kcfs.
Collaborative Agencies
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
Resources
Hydrologic Resource Links
Additional Resource Links
- NWS Precipitation and River Forecasting
- Area Hydrographs
- Weather Forecast Office Spokane, Washington
- Northwest U.S. River Flood Outlook
- Snow Information
- National Flood Insurance Program
- USGS Idaho Water Science Center
- USGS Washington Water Science Center
- U.S. Army Corps of Engineers - Seattle District
- Natural Resources Conservation Service - Water & Climate Center
- U.S. Drought Portal
- Idaho Department of Water Resources
- International Joint Commission
- Available Water Temperatures - Updated Daily
- Washington State Digital Flood Hazard Map - Dept of Ecology
- Idaho Dept of Water Resources - Flood Hazard Maps