June 7, 2016
Current Koocanusa Reservoir elevation: 2,424.6 feet
Current Koocanusa Reservoir inflow: ~31,000 cubic feet per second
Current Libby Dam outflow: 12,000 cfs
Current Kootenai River elevation at Bonners Ferry: 1,752.1 feet
Below is the current flow change schedule:
Outflow from Libby Dam will decrease from 12,000 to 10,000 cfs on June 9 at 1 a.m. MST.
Outflow from Libby Dam will decrease from 10,000 to 9,000 cfs on June 12 at 1 a.m. MST.
Outflow from Libby Dam will decrease from 9,000 to 8,000 cfs over two hours on June 13 at 1 a.m. MST.
Outflow from Libby Dam will decrease from 8,000 to 7,000 cfs over two hours on June 14 starting at 1 a.m. MST.
This operation completes the release of the 0.93 million-acre-feet of sturgeon augmentation volume on June 14 and reduces outflow to the summer bull trout minimum flow of 7,000 cfs.
The June water supply forecast for the April through August inflow volume into Lake Koocanusa was 6.445 million-acre-feet, which is 110 percent of the 1981-2010 average. The June water supply forecast is significantly higher than last month (May WSF was 5.831 MAF, 99% of average) due to high inflow volumes in April and May. There has been unseasonably warm temperatures this spring causing significant snowmelt within the basin. The remaining snowpack within the basin is approximately 25% of average.
The Northwest River Forecast Center creates daily forecasts for short term projections throughout the Kootenai and Columbia River Basins. These forecasts may be updated multiple times in a day and as conditions change. Links to those forecasts can be found below.
Short term forecasts for Libby Dam elevations and inflows:
Short term forecasts for Libby Dam outflow:
Additionally, projected inflows and reservoir operations at Libby Dam through next summer can be found here:
These modeling results are updated at least monthly and include information on elevations, inflow, and outflow:
Page 1 shows Lake Koocanusa elevation probabilities through the summer
Page 2 shows Libby Dam outflow probabilities through the summer
Page 3 shows Lake Koocanusa elevation probabilities for a given date
Page 4 shows Bonners Ferry stage probabilities through the summer
Page 5 shows Bonners Ferry maximum stage probabilities for the year
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