Scientific Investigations Report 2007–5008
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5008
Figure 24. (A) Maximum water temperature standard for the North Santiam River, Oregon, downstream of Big Cliff and Detroit Dams, an estimate of the water temperatures in the absence of the dams calculated using a volume-weighted mix of reservoir inflows for 2003, and modeled water temperatures of the water released from Detroit Dam and (B) smoothed water temperature of the volume-weighted mix of the reservoir inflows, used as a temperature target for the selective withdrawal simulation, along with the modeled reservoir release temperatures for that scenario. The selective withdrawal scenario was able to achieve the temperature target for much of the year, but the lake did not have enough cool water to meet that target in early spring or late autumn. The modeled release temperature did, however, remain less than the temperature standard for the entire year.