The habitat characteristics and fish production of Camera sidechannel (Atnarko River) were studied by the Fish Habitat Improvement Section in July 1980. The objectives of the study were to assess carrying capacity and identify enhancement opportunities for salmonids. Camera sidechannel flow regime is from groundwater sources from September to April with the Atnarko River discharging a portion of its flow through Camera from May to August. The warmer Atnarko River raises Camera's water temperature by 1-3?C during critical spawning and incubation periods. At low summer flow, 14,900 m2 of habitat had a standing crop of 1913 rainbow fry, 1452 coho fry and 1316 chinook fry. However, steelhead fry emergence is continuous from early July to early September and 89% of the steelhead fry outmigrate 2-4 weeks after emergence. The corrected estimate for Camera steelhead fry production is 39,840 fry. Estimated egg-fry survival is low, 11.3-15.1%, and assumed to be the result of fines in the substrate and lack of quality s
Stuart, K.M.. 1981. Habitat Assessment and Salmonid Production in Camera Sidechannel (Atnarko River) with Reference to Enhancement Opportunities. Ministry of Environment. Fisheries Report. FRN167
Topic: Fish and Fish Habitats
Keywords: Atnarko River, Camera sidechannel, salmonids, carrying capacity, enhancement, habitat, standing crop, rainbow trout, coho salmon, chinook salmon, steelhead, survival
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