July 31, 2015
Current Koocanusa Reservoir elevation: 2,443.29 feet
Current Koocanusa Reservoir inflow: ~6,500 cubic feet per second
Current Libby Dam outflow: 7,500 cfs
Current Kootenai River elevation at Bonners Ferry: 1,747.13 feet
Outflow from Libby Dam will decrease from 7,500 to 7,000 cfs at 1 a.m. MDT tomorrow.
Early summer projections show a stable pool in September, so the intent is to end August with full draft to 2,439 feet achieved. Current inflow forecasts indicate that the pool will continue to draft while the project is releasing 6,000 cfs during September. To accommodate this draft, the current reduction is intended to assure an end of August elevation of 2,441.5 feet or below, which will in turn allow the reservoir to draft to 2,439 by the end of September.
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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