Designed by the Corps of Engineers, it began service on August 22, 1968. Its primary purpose is flood control but it also provides power, navigation improvement downstream and irrigation. The damming of the river created Foster Reservoir, which is a popular fishing and water sports area. The reservoir stores 28,300 acre-feet (34,900,000 m3). The powerhouse has two generators with a capacity totaling 20 MW. The dam regulates water flow from the main facility, Green Peter Dam.[3]
They concluded that all fish travelling over the spillway fish weir would probably experience a minimum of one significantly stressful event. This is due to the absence of a cushioning effect due to the shallow flow depth and badly formed discharge jet. In fact, most fish would likely experience many events while tumbling down the spillway. Because of the larger size of actual fish, the study concluded that live fish would experience even greater events than the sensor fish. Most injuries sustained by smolt (juvenile salmon) after they had passed through the weir were caused by the weir jet's shallow depth as well as the angle of the jet as it struck the spillway chute.
Over 22% of the sensor fish were damaged or lost in the turbine tests. The devices showed signs of "grinding or squeezing". It is assumed that this happened while being compressed when travelling between the blades of the turbine.
Although turbine pressures were similar to Kaplan turbines at the Snake River dams and Columbia River dams, significant events were recorded by the sensor fish occurred at a rate 2-3 times more frequently at the Foster Dam. Rates of injury and mortality for live fish were correspondingly higher.
When comparing the two passage routes, data show that fish travelling over the weir experienced greater event magnitudes than fish travelling through the turbine. This is because of the eventual impact the fish experienced at the spillway chute. The study suggests that possible spillway weir design changes and increasing the depth of flow would improve fish safety.[4]
foster, embankment, type, rock, fill, across, south, santiam, river, near, sweet, home, oregon, united, states, 2009official, namelocationlinn, county, oregon, usaopening, date1968, spillwaysimpoundssouth, santiam, riverheight126, length4565, reservoircreatesf. Foster Dam is an embankment type rock fill dam 1 across the South Santiam River near Sweet Home Oregon United States Foster DamFoster Dam in 2009Official nameFoster DamLocationLinn County Oregon USAOpening date1968 1 Dam and spillwaysImpoundsSouth Santiam RiverHeight126 ft 221 m Length4565 ft 379 m ReservoirCreatesFoster LakeTotal capacity28 300 acre ft 0 0349 km3 2 Power StationTurbines2Installed capacity20 MW 2 Websiteweb wbr archive wbr org wbr web wbr 20090625042352 wbr http wbr www wbr nwp wbr usace wbr army wbr mil wbr op wbr v wbr proj wbr gpfoster wbr asp Designed by the Corps of Engineers it began service on August 22 1968 Its primary purpose is flood control but it also provides power navigation improvement downstream and irrigation The damming of the river created Foster Reservoir which is a popular fishing and water sports area The reservoir stores 28 300 acre feet 34 900 000 m3 The powerhouse has two generators with a capacity totaling 20 MW The dam regulates water flow from the main facility Green Peter Dam 3 Aerial view of the dam Contents 1 Risk to fish 2 See also 3 References 4 External linksRisk to fish editThe Pacific Northwest National Laboratory tested the likely effects of the dam on fish populations using the sensor fish They concluded that all fish travelling over the spillway fish weir would probably experience a minimum of one significantly stressful event This is due to the absence of a cushioning effect due to the shallow flow depth and badly formed discharge jet In fact most fish would likely experience many events while tumbling down the spillway Because of the larger size of actual fish the study concluded that live fish would experience even greater events than the sensor fish Most injuries sustained by smolt juvenile salmon after they had passed through the weir were caused by the weir jet s shallow depth as well as the angle of the jet as it struck the spillway chute Over 22 of the sensor fish were damaged or lost in the turbine tests The devices showed signs of grinding or squeezing It is assumed that this happened while being compressed when travelling between the blades of the turbine Although turbine pressures were similar to Kaplan turbines at the Snake River dams and Columbia River dams significant events were recorded by the sensor fish occurred at a rate 2 3 times more frequently at the Foster Dam Rates of injury and mortality for live fish were correspondingly higher When comparing the two passage routes data show that fish travelling over the weir experienced greater event magnitudes than fish travelling through the turbine This is because of the eventual impact the fish experienced at the spillway chute The study suggests that possible spillway weir design changes and increasing the depth of flow would improve fish safety 4 See also edit nbsp Oregon portal nbsp Water portal nbsp Renewable energy portal List of dams in OregonReferences edit a b U S Army Corps of Engineers Green Peter and Foster Dams and Reservoirs Willamette Valley Projects Archived from the original on 2009 06 25 Retrieved 2009 10 25 a b Foster Dam and Lake Portland Oregon U S Army Corps of Engineers 31 May 2002 Archived from the original on 1998 12 06 Retrieved 2010 02 14 Bonneville Power Administration Foster Dam Archived from the original on 2009 08 13 Retrieved 2009 10 25 http www pnnl gov main publications external technical reports PNNL 22236 pdf bare URL PDF External links editU S Geological Survey Geographic Names Information System Foster Dam 44 24 59 N 122 40 09 W 44 416514 N 122 669251 W 44 416514 122 669251 nbsp This Linn County Oregon state location article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Foster Dam amp oldid 1139021635, wikipedia, wiki, book, books, library,
