Owl River Walleye
The Owl River is considered a primary spawning system for Lac La Biche walleye. In 2011, ACA began a long-term project to protect and restore riparian habitat along the Owl River to aid walleye population restoration in the lake. We monitored aquatic habitat, water quality and the use of the Owl River as walleye spawning habitat every three years, completing our final year in 2017. From May to August, we collected monthly water quality data, and in August completed an aquatic habitat assessment. Flooding in August created conditions that prevented the collection of all variables that were done in 2011 and 2014; however, data that was collected and personal observations show that little changed from initial baseline conditions. Dissolved oxygen and temperature were within the optimal range for walleye spawning in May. Total phosphorus (TP) concentrations were high (86 - 160 µg/L) throughout the system; concentrations were higher at downstream sites than at upstream sites. Total nitrogen in 2017 ranged from 0.8 to 1.6 mg/L, with summer averages above the ESRD limit (1.0 mg/L) at 3 out of 5 water sampling sites. Total coliform counts exceeded the CCME limit for agriculture use (>1,000 mpn/100mL) at all sites. Diversity of the benthic community ranged from 2.1 to 2.3 and richness ranged from 36 to 56; the most common family was Baetidae.
Alberta Environment and Parks, Syncrude Canada Ltd.
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|Owl River Walleye Spawning-Run Assessment||2012-2013||1|
|Owl River Walleye and Aquatic Habitat Assessment||2014-2015||1|
|Owl River Walleye||2017-2018||1|