| Area | Basin-wide |
| Topic | Temperature: MWAT at Battle Sites, by Year 1998-2001 |
| Caption: This chart shows maximum floating weekly average temperature (MWAT) for each site Battle Creek basin with available data in the years 1998-2001. Sites are grouped by stream and are listed in upstream order. Studies have found that spring-run chinook salmon eggs subjected to temperatures of greater than 62°F for 7-12 days in the period June 15-30 will experience 100% mortality, as will winter-run chinook salmon eggs in the period September 15-30. Spring-run chinook adults oversummer in freshwater, and if exposed to temperatures over 66.2°F they are not able to spawn successfully. Reference values shown in the chart were taken from Armour (1991), Berman (1990; as cited in USFWS 1996), USBR (1991), and CDFG (1998). Data were provided by the California Department of Water Resources. See Info Links for more information. | |
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