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Hicks(Garrett) Lake
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Welcome
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Watershed Area
677 acres
Lake surface area
5 acres
Maximum depth
22 feet
Mean depth
9 feet
Public Park
Y
Boat Ramp
car top
Fish Present
carp
Hicks Lake (Lake Garrett) was monitored in 1996 through 1998. The data indicated that the lake was highly productive (eutrophic), with fair to poor water quality. Recurring bluegreen blooms have frequently limited beneficial uses of the lake, situated in Lakewood Park. Hicks Lake was placed on the EPA 303d list of impaired water bodies for both phosphorus and fecal coliform concentrations.
A baseline water quality study was completed in 2004, and an alum treatment was carried out in 2005 by the King County Lake Stewardship Program to reduce phosphorus in the lake. The treatment was successful, with summer monitoring following the condition of the lake to measure the longevity of effectiveness. Further treatments will probably be necessary in the future unless large changes in the condition of watershed inputs are achieved.
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This bathymetric map shows contour lines of equal depth, similar to a topographic map would for mountains and valleys
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
Click image to enlarge
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Water Quality Data
No data in the past 5 years for this lake.
Through a combination of efforts by volunteer lake monitors and King County staff,
data relating to physical, chemical, and biological aspects of the lake have been
collected for most lakes. The King County Lake Stewardship Program analyzes data
to track long-term water quality trends in small lakes in western King County.
View or Download Data Use this tool to view or download data from the lake in tabular format. You can
define date ranges and select which parameters to view or download. Chart Data Use the charting tool to look at graphs showing single parameters for a single
water year at a time. Five year water quality trends
A common method of tracking water quality trends in lakes is by calculating
the “trophic state index” (TSI) (Carlson, 1977). TSI indicators predict the biological
productivity of the lake based on water clarity (Secchi) and concentrations of total
phosphorus (TP) and chlorophyll a (Chlor).
The average of these three TSI indicators during the growing season can be used
to place lakes in one of three broad categories:
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