Lake Assessment Program - Circle Lake, Rice County

Lake Assessment Program - Circle Lake, Rice County

1992

Circle Lake was sampled during the summer of 1991 as part of the Minnesota Pollution Control Agency's (MPCA) Lake Assessment Program. Data collected during the study showed that in terms of total phosphorus, chlorophyll and Secchi disk transparency, the water quality of Circle Lake is poorer than similar lakes in the same ecoregion. The mean summer concentrations of total phosphorus and chlorophyll were 575 and 126 ug/1 (ug/1 = micrograms per liter) respectively and the mean Secchi disk transparency was 4.1 feet. Based on these values, and on Carlson's Trophic Status Index (TS!) (Carlson, 1977), which ranges from O (very oligotrophic) to 100 (hypereutrophic), Circle Lake would be considered hypereutrophic. The average TS! value for Circle Lake is 78.

Weir, Edward
Ganske, Lee

MPCA
MPCA

Minnesota Pollution Control Agency

61

Surface Water
Water Quality & Pollutants
Water Use & Availability
Water Conveyance & Hydraulics

water quality
water qualities
water-quality
water-qualities
water quality indicator
water quality indicators
land use
land uses
land-use
land-uses
water quality assessment
water quality assessments
water-quality assessment
water-quality assessments
water quality criteria
water quality data
water quality management
water quality managements
water quality modeling
water quality model
water quality sampling
water quality standard
water quality standards
water quality protection
water quality & pollutants
water quality and pollutants
water quality restoration
lake assess
lake assessed
lake assesses
lake assessing
surface water quality
lake assessment program
lake assessment
Rice County
Circle Lake

1990-1999

No

Public Domain

Minnesota Water Research Digital Library