Banks Lake Fishery Evaluation Project Annual Report: Fiscal year 2001 (September 1, 2001 to August 31, 2002).

Polacek, M. ; Knuttgen, K. ; Baldwin, C. ; Woller, H.

Technical Information Center Oak Ridge Tennessee

关键词: Fisheries;    Fish hatcheries;    Washington(State);    Lakes;    Dissolved gases;   

RP-ID  :  DE2004821613

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The Washington Department of Fish and Wildlife implemented the Banks Lake Fishery Evaluation Project (BLFEP) in September 2001 with funds from the Bonneville Power Administration. The first year of the BLFEP was used to gather historic information, establish methods and protocols, collect limnology data, and conduct the first seasonal fish surveys. Water quality parameters were collected monthly from February to May and bi-monthly from June to August. Banks Lake water temperatures began to increase in April and stratification was apparent by June at all 3 limnology collection sites. By late August, the thermocline had dropped to nearly 20 m deep, with 19-20 degrees Centigrade temperatures throughout the epilimnion. Dissolved oxygen levels were generally above 10 mg/L until mid summer when dissolved oxygen dropped near or below 5 mg/L below 20-m deep. Secchi depths ranged from 3-10 m and varied by location and date. Nearshore and offshore fish surveys were conducted in May and July using boat electrofishing, fyke net, gill net, and hydroacoustic surveys.