Mark-Recapture and Fish Monitoring Activities in the Little Colorado River in Grand Canyon from 2000-2022.pdf

Since 2000, AZFWCO has conducted studies in the lower 13.57 river kilometers (rkm) of the Little Colorado River (LCR) to estimate abundance and track trends in abundance of the Humpback Chub (Gila cypha), and to monitor other fishes. This report documents Mark-Recapture and Fish monitoring studies in a 22-year period from 2000-2022.

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Little Colorado River confluence
The Arizona Fish and Wildlife Conservation Office – or AZFWCO as we are more commonly known – is part of the U.S. Fish and Wildlife Service’s Fish and Aquatic Conservation Program. Established in eastern Arizona in 1956 as a fishery assistance office, AZFWCO has expanded to three stations, located...
Program
A man is fishing in a boat with three young girls. The kids are excitedly pulling a fish out of the water.
The Fish and Aquatic Conservation programs work together to deliver resilient habitats, healthy fish, connected people, and strong partnerships. From habitat restoration to aquatic invasive species prevention, captive breeding to population assessment and monitoring, our programs are driven by the...
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We provide national leadership in the recovery and conservation of our nation's imperiled plant and animal species, working with experts in the scientific community to identify species on the verge of extinction and to build the road to recovery to bring them back. We work with a range of public...
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Endangered and/or Threatened species
Rivers and streams
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Fisheries
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Aquatic environment
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