Dec 29, 2013
Current Koocanusa Reservoir elevation: 2,426.4 feet
Current Koocanusa Reservoir inflow: approximately 3,500 cubic feet per second.
Current Libby Dam outflow: 5,300 cfs.
Current Kootenai River elevation at Bonners Ferry: 1,746.1 feet
Outflow from Libby Dam will decrease tonight from 5,300 to 4,000 cfs over three hours, beginning at 11 p.m. MST. The current plan is to hold outflow at 4,000 cfs, the minimum allowable outflow from Libby Dam, through the week.
The Corps has been managing the draft of Lake Koocanusa to provide storage space in the reservoir. The December update to the water supply forecast predicts an April-to-August Libby inflow volume of 5.502 million-acre-feet, which is 94 percent of the 1981-2010 average. This corresponds to a December 31 elevation requirement of 2,426.6 feet on Lake Koocanusa, which has now been reached.
The Northwest River Forecast Center creates daily forecasts for short term projections throughout the Kootenai and Columbia River Basins. These forecasts can be updated multiple times in a day and can be updated at anytime as conditions change. Links to those projections can be found below:
Short term forecasts for Libby Dam elevations and inflows can be found here: http://www.nwrfc.noaa.gov/river/station/flowplot/flowplot.cgi?lid=LYDM8
Short term forecasts for Libby Dam releases can be found here: http://www.nwrfc.noaa.gov/river/station/flowplot/flowplot.cgi?lid=KBDM8
Short term forecasts for Bonners Ferry can be found here: http://www.nwrfc.noaa.gov/river/station/flowplot/flowplot.cgi?lid=BFEI1
Please note the National Weather Service's disclaimer on forecasts beyond 3 days.
All forecasts and model projections are based on the best information at the current time, as the weather changes so will the short and long-term predictions.
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