Area	Basin-wide/Regional
Topic	Fish: Presence/Absence of Coho in Russian River Basin 2000-2002

 

Caption:  This chart shows a summary of the presence/absence of coho salmon young-of-the-year in streams in the Russian River basin based on sampling that took place in the years 2000-2002. The numbers shown on the chart bars indicate the number of streams in each sub-basin in which surveys always, sometimes or never found coho. There was a substantial decline in the number of streams containing coho between the periods 1988-1999 and 2000-2002, which was an opposite trend from what occurred in most of the rest of the central California coast. During 2000-2002, coho salmon were detected at least once in only 4 creeks: Green Valley, Dutch Bill, Mark West, and Redwood (tributary to Maacama). The Redwood Creek presence data were not included in the source database, so it does not appear in the chart. This chart contains data from a draft California Department of Fish and Game database. Absence data are provisional pending more extensive study, because coho may exist in some streams but only occur in some years or may have resided in other reaches of streams not surveyed. See InfoLinks for more information.

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To learn more about this topic click Info Links .
To view additional information (data source, aquisition date etc.) about this page, click Metadata .
To view the table with the chart's data, click Chart Table web page.
To download the table with the chart's data, click fish_cohopres_rus_dfg_88_02_sum.db (size 18,432 bytes) .
To view the table with the chart's source data, click Source Table web page.
To download the table with the chart's source data, click fish_cohopres_rus_dfg_88_02.dbf (size 44,258 bytes)
 
 

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