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About our Lakes

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Lake LucerneLake Lucerne

Lake Lucerne is located in Maple Valley, Washington. The lake is 16 acres in size with a mean depth of 18 feet; and with a maximum depth of 37 feet. The watershed is 403 acres in size and includes drainage from adjacent Pipe Lake. Pipe Lake is partially located in both Covington and Maple Valley, Washington. The lake is 52 acres in size with a mean depth of 27 feet; and with a maximum depth of 65 feet. The watershed is 314 acres in size and drains to Lake Lucerne.

The City of Maple Valley, together with the King County Department of Natural Resources and the City of Covington, continue with a multi-year effort to eradicate Hydrilla verticillata (Hydrilla) from Lake Lucerne (located formerly within unincorporated King County and within the cities since 1997).

Pipe and Lucerne Lakes Integrated Aquatic Vegetation Management Plan (IAVMP) [PDF]
Brown Plat Detention Pond Winter Water Quality Monitoring 2009 [PDF]


Pipe LakePipe Lake

Pipe Lake is partially located in both Covington and Maple Valley, Washington. The lake is 52 acres in size with a mean depth of 27 feet; and with a maximum depth of 65 feet. The watershed is 314 acres in size and drains to Lake Lucerne.

The City of Maple Valley, together with the King County Department of Natural Resources and the City of Covington, continue with a multi-year effort to eradicate Hydrilla verticillata (Hydrilla) from Pipe Lake (located formerly within unincorporated King County and within the cities since 1998).

Pipe and Lucerne Lakes Integrated Aquatic Vegetation Management Plan (IAVMP) [PDF]


Lake WildernessLake Wilderness

Lake Wilderness is located in south King County within the City of Maple Valley. The lake is 67 acres in size with a mean depth of 21 feet; and with a maximum depth of 38 feet. The watershed is 318 acres in size and drains to Soos Creek.

Excessive aquatic plants are the greatest concern to users of Lake Wilderness. An aquatic plant management plan addressing long-term management strategies for Myriophyllum spicatum (Eurasian watermilfoil) was completed in May 1997. In August 1997, the City of Maple Valley incorporated the lake and adjacent residential areas. With the assistance of King County, a lake management district was formed to implement the aquatic plant management plan. In 1998, herbicide was applied to eradicate Eurasion watermilfoil from the lake. Based on 1999 diver surveys, plant control efforts have been successful.

Lake Wilderness Integrated Aquatic Vegetation Management Plan (IAVMP) [PDF]

Water Quality Monitoring

Lake Wilderness Swimming Beach Monitoring Program

The Lakes of Maple Valley and Covington Report
A report on monitoring results at Lake Lucerne, Pipe Lake, and Lake Wilderness 

2014 Report [PDF]
2013 Report
[PDF]
2012 Report
[PDF]
2011 Report [PDF]
2010 Report [PDF]
2009 Report [PDF]

A Citizen's Guide to Understanding and Monitoring Lakes and Streams [PDF]

Lake Wilderness Toxic Algae Monitoring

Lake Wilderness is among thirty western Washington lakes being tested for algae toxins under a grant from the Center for Disease Control and Prevention. The REHAB (Regional Examination of Harmful Algal Blooms) grant was issued to Washington State Department of Ecology and is being implemented by King, Pierce and Snohomish counties. Ten lakes with public access areas from each of the three counties were selected for sampling and laboratory analysis of algae blooms. The goals of the project are to measure toxin, determine how often the lakes develop toxins, and how long the toxin levels last with the hope that the data collected will help the scientific community gain a better understanding of why certain algae produce toxins and if there is a way to prevent it.

REHAB Newsletters

    Summer 2011 [PDF]
    Summer 2010 [PDF]

Lake Statistics

Table Sources and Key:

  • "Lake Area" data from Lakes of Washington.
  • "Maximum depth" information from King County Wetland Inventory (KCWI).
  • "Public Access" Key: (y = yes, d = developed, NA = not available, o = open space park, ct = car topper, wi = walking, l = launch)

Lake Name

Location

Watershed (acres)

Lake Area (acres)

Mean Depth (feet)

Maximum Depth
(feet)

Public Access

Public Park
Lucerne City of Maple Valley

403.2

16

18

37

-

no

Pipe City of Maple Valley

314

52

27

65

-

no

Wilderness City of Maple Valley

420

67

21

38

y,d,l

yes


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