• Paradise Lake had fairly clear water, with high nutrient concentrations and high algal growth.
• Paradise Lake has experienced considerable variation from year to year. This year, no trends are seen.
• No algal blooms were reported for toxin testing in 2023.
• Continue to monitor nearshore plants to catch purple loosestrife, a regulated Class B noxious weed, and yellow flag iris, a Class C noxious weed (control is recommended but not required) that has been identified near Paradise Lake. If spotted, notify the King County Noxious Weeds Program.
This bathymetric map shows contour lines of equal depth, similar to a topographic map would for mountains and valleys. The red 'X' marks the location where water quality samples are taken.
This map shows the area of the watershed relative to the area of the lake. Generally speaking, the larger a watershed is relative to a lake, the greater the influence land use practices on lake water quality.
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).
