For Immediate Release
April 20, 2015
Lake Pend Oreille elevation at Hope: 2,053.8 feet
Albeni Falls Dam inflow: ~31,000 cubic feet per second
Albeni Falls Dam outflow: 27,000 cfs
Outflow from Albeni Falls Dam increased this morning from 27,000 to 29,000 cfs over a one-hour period starting at 11 a.m. PDT today.
Seattle District Water Management has taken over control of day-to-day regulation of Albeni Falls Dam during the refill period which will continue through late-June. The current plan for the remainder of April is to target being below 2,055 feet at the Hope Gage for the end of April. While elevation 2,056 feet is the upper limit the lake can be at on April 30th, the lake is being held lower in consideration of downstream Columbia River needs that will extend through mid-May. Lake Pend Oreille, unless the Dam is on freeflow, will refill towards the summer operating range of 2,062 to 2,062.5 feet by mid to late June depending on hydrologic conditions and flood risk management needs.
Short term modeling forecasts are provided by the Northwest River Forecast Center. Their projections for Albeni Falls Dam inflow, outflow and the Lake Pend Oreille at the Hope gage can be found here:
Projections for future operations at Albeni Falls Dam can be found here:
Page 1 shows Lake Pend Oreille Elevation at the Hope gage
Page 2 shows Albeni Falls Dam inflow
Page 3 shows Albeni Falls Dam outflow