Weighted usable area and stream capacity for kokanee spawning and juvenile rainbow trout rearing was estimated at 4 discharge levels in Mission Creek. The study was done to determine potential levels of fish production relative to current populations and options for enhancement. Hydraulic conditions were simulated using the HEC-2 model at discharges covering a geometric series from 6 to 44% mean annual discharge (MAD). Results indicate the maximum capacity for kokanee spawning occurred at 1.42 m3/s (22% MAD), and was approximately 330,000 fish. Current kokanee escapements were below capacity at all flows simulated. Maximum capacity for juvenile trout was expressed at 0.42 m3/s (6% MAD) for fry and 1.42 m3/s (22% MAD) for parr. Application of theoretical survival biostandards to capacity estimates implied that potential trout migrant production to Okanagan Lake was limited by the amount and quality of parr habitat. Recommendations include a target summer/fall minimum flow of 1.42 m3/s, spawning gravel improvem
Tredger, C.D.. 1989. Fish Production Capacity of Mission Creek at 4 Modelled Discharge Levels. Ministry of Environment. Fisheries Assessment and Improvement Unit. FAIU-12
Topic: Fish and Fish Habitats
Keywords: Mission Creek, kokanee salmon, rainbow trout, production, enhancement, habitat, stream flows, spawning, escapement, capacity, Okanagan Lake, management
Scientific Name: Oncorhynchus mykiss
English Name: Rainbow Trout
To copy the URL of a document, Right Click on the document title, select "Copy Shortcut/Copy Link", then paste as needed. Only documents available to the public have this feature enabled.