USGS Scientific Investigations Report 2010–5153 - Thermal Effects of Dams in the Willamette River Basin, Oregon

Table 4. Measured with-dam and estimated without-dam annual maximum water temperatures as measured by the 7-day average of the daily maximum at selected dam sites in the Willamette River basin, Oregon, 2001–02.

[7dADM, 7-day running average of the daily maximum; na, not available; *, estimate because dataset is incomplete]

Dam site	Annual maximum 7dADM, in degrees Celsius (month/day of maximum 7dADM)				USGS station ID for the measured with-dam data
	2001		2002
	Without dams	With dams	Without dams	With dams
Big Cliff / Detroit	17.9 (8/13)	16.3 (9/15)	17.2 (7/23)	13.7 (10/17)	14181500
Blue River	21.1 (8/12)	21.6 (9/01)	21.0 (7/26)	16.3 (10/19)	14162200
Cottage Grove	23.6 (8/12)	21.9 (9/12)	23.4 (7/27)	20.2 (9/21)	14153500
Cougar	15.2 (7/06)	14.5 (10/02)	15.3 (7/12)	17.4 (7/29)	14159500
Dexter / Lookout Point	23.2 (8/10)	20.4 (9/15)	23.6 (7/23)	18.8 (9/22)	14150000
Dorena	25.1 (8/10)	19.3 (9/29)	25.8 (7/27)	18.6 (10/01)	14155500
Fall Creek	21.5 (8/12)	16.6 (10/17)*	21.6 (7/23)	21.3 (8/31)	14151000
Fern Ridge	23.0 (7/10)	23.3 (8/12)*	22.0 (7/16)	24.1 (7/24)	14169000
Foster	24.5 (8/12)	13.2 (8/29)	24.5 (7/22)	13.1 (7/19)	14187200
Green Peter	23.4 (8/12)	na	23.9 (7/23)	na	na
Hills Creek	19.4 (8/13)	na	19.9 (7/13)	na	na
River Mill	19.0 (8/10)	17.9 (8/15)	18.0 (7/23)	18.5 (7/27)	14210000