Trophic state evaluation for selected lakes in Grand Teton National Park
Dustin S and Miller W. 2001. Trophic state evaluation for selected lakes in Grand Teton National Park. Journal of the American Water Resources Association (JAWRA). 37(4):887-898
Increased visitation at Grand Teton National Park (GTNP) has raised concerns about impacts on surface water in the park. The purposes of this study are to perform a benchmark trophic state survey for comparison to future evaluations and to identify possible areas of concem. Four watershed regions based on geographic and geologic features were delineated for study. Six Alpine lakes, six Moraine lakes, three Valley lakes, and two Colter Bay lakes are evaluated. Lakes were sampled for total phosphorus (TP), chlorophyll-a, and transparency. The water quality, as defined by trophic state, in the park is generally good. Oligotrophic to mesotrophic conditions were found in the Alpine and Moraine lakes and mesotrophic to eutrophic conditions were found in the Colter Bay and Valley lakes. High inflow TP concentrations in the park's northeast side may be due to the presence of natural geologic phos~ phate from the Phosphoria Formation.
- Type
- Journal Article
- Authors
- Dustin, Shaun; Miller, Woodruff
- Units
- GRTE , WRD
- Keywords
- alpine lakes, chlorophyll-a, Eutrophication, Evaluation, geological observations, Lakes, Phosphorus, Secchi depth, transparency, trophic state, Water Quality, Watersheds, WRBIB