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Water Quality <br />Recreational suitability measures <br />The Trophic State Index (TSI). is a number that summarizes a Jake's overall nutrient richness. Nutrient richness ranges from clear lakes, low in <br />nutrients (oligotrophic), to green lakes, with very high nutrient levels (hypereutrophlc). The chart below shows the overall TSI rating forthis lake <br />(top bar), followed by TSI ratings for the individual parameters that contribute to nutrient richness. The TSI calculations are based on data <br />collected between June and September 2008 to 2017. <br />Clear Moderately Clear Green Very Green <br />[Oligotrophir]. .(Mesotrophir). .(Eutrophlr}. .(Hypereutrophir}. <br />Trophic State <br />Index (TSI); 20 30 40 so 60 70 eo <br />Transparency; <br />20 30 40 50 60 70 30 <br />Chlorophyll -a: <br />The Chlorophyll -a value for this parameter falls o, side the grachable rage. <br />See the table below instead. <br />Total Phosphorus: <br />20 30 4n 50 60 70 80 <br />Overall Trophic State Index for This Lake: 45 <br />16-Year average Expected TSI range for Parameter Parameter TSI Number of samples <br />of all summer samples lakes in same ecoregion <br />Transparency (meters) 3 44 43 - 54 60 <br />Chloraphyll-a (parts perhillion) — — 46-61 N/A <br />Total Phosphorus (parts per billion) 19 47 49 - 61 42 <br />'** Insuffaent data available <br />Water transparency is an excellent indicator of water quality, and the majority of these data are ccI[[ected by volunteers. Join the MPCNS Citizen <br />Lake Monitoring Program and help collect this important information for your lake. <br />Clarity values from 2015 are compared against the values for other lakes throughout the state, as well as <br />county, ecoregion, and watershed (HUC4 and HUC8). Higher percentile values indicate that a lake has <br />greater clarity than other lakes in the region, e.g. a lake in the 95th percentile in its county has better <br />clarity than 95% of the lakes in the county. Note that some lakes may appear as being in the <br />100th percentile due to rounding. <br />Statewide 88 <br />County Washington 89 <br />Ecoregion North Central Hardwood Forests 96 <br />HUC4 Watershed Mississippi Headwaters (0701) 87 <br />HUC8 Watershed Mississippi River -Twin Cities 93 <br />(07010206) <br />