Seattle District: Lake Washington Ship Canal; Libby Dam; Hungry Horse Dam; Howard Hanson Dam The agency designed the flows to aid the downstream movement of young salmon smolts. Currently. Currently . The profile of Libby Dam is a right triangle. Libby Dam outflow is expected to remain at 7 kcfs through August. Lake levels fluctuate throughout the year and are generally highest in July, August and then decrease slightly throughout the fall. It called for a 20-foot draft from full pool at both Montana dams by the end of August, which adversely impacted resident fish growth during the critical period, summer and fall. Provisional Data Warning Hydrologic Data: [8 Days Hourly] [Prior Month] Water Quality Data: Water Quality Data: Power: [Monthly Power Report] Project Description. Fisher River Flow: 177 cfs Yaak River Flow: 313 cfs Thompson River: 281 cfs Fishing Report: The River has stabilized at 7k, and most of the glacial silt has settled out. The sturgeon flow augmentation plan this year is to ramp up Libby Dam discharge over a one week period to 20,000 cubic feet per second, and then hold that flow for about three weeks. The reservoir was officially impounded in 1972 after construction of Libby Dam, which began in 1966. Libby Dam Outflow Update Sturgeon Flow Releases to Begin by U.S. Army Corps of Engineers June 10, 2009. Figure 14: Libby Dam Inflow Forecast from Water Supply, ESP and the COE Plotted with Observed Runoff. In 1994, flow in the Kootenai River at Banners Ferry, during white sturgeon migration and spawning, comprised primarily unregulated flow originating from tributaries below Libby Dam (local inflow). Notice the departure from normal runoff starting 5/16 caused by above normal snow melt rates. The level of Kootenay Lake is vital to operating our four hydroelectric dams on the Kootenay River. The Karaj Dam (Amir kabir) The initial studies for Amirkabir Dam took 22 years until 1956 when formal proceedings began and the dam was constructed in the period from 1957 to 1961 by Morrison Knudsen. Libby is operated for power, flood control, and other benefits at-site and downstream in both Canada and the United States. Libby Dam. Kootenai River flows are augmented with additional releases of water from Libby Dam. Technical questions may be referred to the Permanent Engineering Board. Some water from the dam was released to enhance spawning. Water behind the Libby dam floods back 42 miles into Canada, while the water released from the dam returns to Canada just upstream of Kootenay Lake. A stilling basin below the spillways and sluiceways helps slow the water’s velocity to prevent downstream erosion. As you may or may not know, Lake Koocanusa is a manmade reservoir that was created 45 years ago (1975) when the Libby Dam was constructed on the Kootenay River in Montana, USA. Libby Dam, located on the Kootenai River 17 miles upstream from the town of Libby, Montana, rises about 422 feet above bedrock and includes a spillway with two 48-foot-wide bays, three 10- by 17-foot regulating sluices, and a powerhouse for eight 105-megawatt generators. Water Temp: 43.34 ° F; Flow: 4120 ft³/s; Water Level: 17.86 ft. USGS. Libby Dam and Lake Koocanusa. DTIC Archive, Dortch,Mark S, ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS, *DAMS, *CONDUITS, WATER FLOW, PRESSURE, ELECTRIC DISCHARGES, RIVERS, HYDRAULIC MODELS, WATERWAYS, RESERVOIRS, FLOOD CONTROL, MONTANA, AERATION, CAVITATION, WATER JETS, Collection dticarchive; additional_collections Language English. BUILDING STRONG ® BUILDING STRONG ® BUILDING STRONG ® BUILDING STRONG ® BUILDING STRONG ® BUILDING STRONG ® BUILDING STRONG ® 2280 2290 2300 2310 2320 2330 2340 2350 2360 2460 2450 2440 2430 2420 2410 2400 2390 2380 2370 … Figure 15 Libby Dam Inflow Forecast from Water Supply, ESP and the COE. Columbia River Treaty. Keenlyside Dam. Libby Dam, constructed in 1972, modified the flow and temperature regime of the river, which affected spawning and recruitment of white sturgeon. At maximum pool, spillway capacity will be 145,000 cfs and regulating sluice capacity will be 61,000 cfs. That was 17 years ago, when the nearby Libby Dam was finished and the waters of the once-wild Kootenai River began backing up in this valley … The dam is located on the Kootenai River, 17 miles upstream of Libby, Montana. The hydro electric turbine capacity is designed to handle 24,000 cubic feet per second (cfs), however due to heavy snow melt off and unexpected heavy spring rains the Libby dam had to release an additional 31,000 cubic feet per second (cfs) across the spillway as can be seen in the photos below. Basin Water Management. All forecasts increased after the rain events around the 6/15 time frame. Libby Dam 16 May 2016 Libby Dam Water Management Overview 2016 Kootenai River White Sturgeon Libby Dam Flow Augmentation Operation . The flow of two generators (700 m3/s each) is roughly equivalent to the average flow of the Iguacu Falls (1500 m3/s). Currently. Columbia Basin Trust. The net result is a more normal spring flow regime that benefits listed species and increases the likelihood of full reservoirs and water supplies for summer flow needs. Water Temp: 41.72 ° F; Flow: 5620 ft³/s; Water Level: 11.02 ft. USGS. Kootenai River bl Libby Dam nr Libby MT. Outflow from Libby Dam will increase from the current rate of 13,500 cfs to 23,500 cfs on Wednesday evening, June 10 over a 2-hour period from 6:00 pm to 8:00 pm. Project experience includes water control manuals for numerous Corps’ Districts, including: New Orleans District: Caernarvon Freshwater Diversion Structure . 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