| Area | Upper Big River |
| Topic | Temperature: Floating Weekly Average of Big River - Upper (MRC) |
Mendocino Redwood Company temperature monitoring stations within the Big River basin are limited to points on, and downstream of, MRC land. MRC sites are labeled with a "70-" prefix to denote the watershed unit. Site 74-3 is on the Upper Big River downstream of Martin Creek. The red and blue designations indicate whether a site has a floating weekly average water temperature exceeded 16.8 C in any year measured. Image from the KRIS Big River Map project.
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