Libby Dam on Monday, June 19, 2006. The flow discharge through the dam spillways is between 55,000-56,000 cubic feet per second (cfs). Rainstorms in Canada were causing inflow to Lake Koocanusa Reservoir to reach a high of 64,000 cfs. The lake water level behind the dam is nearly at full pool on this date (Monday). Photo by Maggie Craig.