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Roundtail chub (Gila robusta) status data created for the Western Division of the American Fisheries Society (WDAFS)
Humpback chub (Gila cypha) are listed under the Endangered Species Act of 1973, as amended. In accordance with recovery goals finalized in 2002, a population estimate was completed for adult humpback chub in Westwater Canyon on the Colorado River. This population estimate was conducted from 1998 to 2000 with the objectives of obtaining population estimates for humpback chub and roundtail chub in Westwater Canyon. Sampling occurred during September and October throughout the three years of the study. Three passes were conducted annually with approximately one week between passes. The primary method of capture was via trammel netting with supplemental electrofishing on one pass per year. Population estimates were...


    map background search result map search result map Roundtail chub (Gila robusta) distribution and status by HUC8 Roundtail chub (Gila robusta) distribution and status by HUC8