Record Display for the EPA National Library Catalog


Main Title Investigation of the Water Quality and Productivity of Polson Bay, Flathead Lake, Montana.
Author Gaufin., Arden R. ;
CORP Author Montana State Univ., Bozeman. Water Resources Research Center.
Year Published 1974
Report Number MUJWRRC-48; OWRR-A-043-MONT; W74-07717 ; OWRR-A-043-MONT(1)
Stock Number PB-232 119
Additional Subjects Water pollution ; Primary biological productivity ; Polson Bay ; Flathead Lake ; Carbon isotopes ; Phytoplankton ; Zooplankton ; Biomass ; Water analysis ; Carbon dioxide ; Temperature measurement ; Thermal pollution ; Chlorides ; Nitrogen inorganic compounds ;
Library Call Number Additional Info Location Last
NTIS  PB-232 119 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 17p
Zooplankton and phytoplankton collections were taken in Polson Bay at the lower end of Flathead Lake, MT, and a biomass estimate obtained. Exchange of nutrients with bottom sediments was measured, particulate matter in the water was analyzed for carbon and ash-free dry weight, and the gross primary productivity of Flathead Lake was measured by means of the carbon 14 method. Thermal stratification occurred at only a few locations in Flathead Lake. Nutrients and dissolved solids, although normally at low concentrations, were usually sufficient to support the growth of phytoplankton. Most components increased in concentration during the summer months. Coliform were almost non-existent in Polson Bay.