Water Quality Characteristics

Years monitored: 2007 – 2012  (RMB database only)

*RMB note: Before 2011, the reporting limit for total phosphorus was 5 ug/L. Starting in 2011, the reporting limit is 3 ug/L.

Parameters Primary
Site
203 (Primary)
Site
206
Site
207
Total Phosphorus Mean (ug/L): 11.6 9.3 12.2
Total Phosphorus Min (ug/L): 7.0 7.0 9.0
Total Phosphorus Max (ug/L): 20.0 14.0 18.0
Number of Observations: 28 15 15
Chlorophyll-a Mean (ug/L): 4.2 2.5 5.0
Chlorophyll-a Min (ug/L): 1.0 1.0 1.0
Chlorophyll-a Max (ug/L): 8.0 4.0 20.0
Number of Observations: 27 15 15
Secchi Depth Mean (ft): 13.6 15.0 12.7
Secchi Depth Min (ft): 9.0 10.0 7.0
Secchi Depth Max (ft): 19.0 19.5 17.5
Number of Observations: 26 15 14
Long-term Trends
Primary site only. Recommend minimum of 8-10 years of data with 4+ readings per season. Minimum confidence accepted by MPCA is 90%
Total Phosphorus: No significant trend exists.
Chlorophyll-a: No significant trend exists.
Secchi Depth: No significant trend exists.
Trophic State Index: No significant trend exists.
EcoRegion Comparisons
(Primary site only. Comparisons are based on interquartile range, 25th – 75th percentile, for ecoregion reference lakes)
Total Phosphorus: Below Expected Range
Chlorophyll-a: Within Expected Range
Secchi Depth: Within Expected Range