Volunteers monitored Welcome Lake from 1996-2008 and resumed in 2014. The lake water is moderately colored, lightly buffered against pH change, and moderate in primary productivity (mesotrophic) with good water quality. Productivity decreased from 1996 through 2002, but may have increased slowly since then. The large data gap from 2009 – 2014 prevents verification.
Thermal stratification is not stable in summer, so there are no increases in phosphorus or ammonia in the deep water. Nitrogen to phosphorus ratios hover around 25:1 from mid-summer through fall, which can favor cyanobacteria. However, there are no reported toxic events to-date.
Welcome Lake has no public boat launch, but residents should watch for Eurasian milfoil, as well as other noxious weeds.
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The average of these three TSI indicators during the growing season can be used
to place lakes in one of three broad categories:
<40 = oligotrophic (low productivity),
40 to 50 = mesotrophic (moderate productivity)
>50 = eutrophic (highly productive).