Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Thurston County Lake Quality

Washington, 29 lakes, measured by Washington Ecology

There are 29 monitored lakes in Thurston County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. 12 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. Most monitored lakes in Thurston County are productive, shallow basins; each lake page shows its own phosphorus and chlorophyll-a readings beside the EPA condition class.

Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Lake has the lowest nutrient and algae readings in the county.

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All Lakes in Thurston County

29 lakes · 12 ranked on readings, 17 without enough sampling12 lakes ranked on readings · 17 without enough sampling, hidden

Include not-rated lakes (17)

#	Lake	Clarity	Phosphorus	Algae	Trophic	Max Depth	Access
1	LakeThurston	No recent samples	7 µg/L	1.3 µg/L	No recent samples	No recent samples	✓ Public
2	LakeThurston	No recent samples	8.5 µg/L	3 µg/L	No recent samples	No recent samples	✓ Public
3	LakeThurston	No recent samples	19.5 µg/L	3.2 µg/L	No recent samples	No recent samples	✓ Public
4	LakeThurston	No recent samples	14.5 µg/L	3 µg/L	No recent samples	No recent samples	✓ Public
5	LakeThurston	No recent samples	28 µg/L	8.3 µg/L	No recent samples	No recent samples	✓ Public
6	LakeThurston	No recent samples	31 µg/L	17 µg/L	No recent samples	No recent samples	Not recorded
7	LakeThurston	No recent samples	20.5 µg/L	6.1 µg/L	No recent samples	No recent samples	✓ Public
8	LakeThurston	No recent samples	24.5 µg/L	14 µg/L	No recent samples	No recent samples	Not recorded
9	LakeThurston	No recent samples	25.5 µg/L	6.1 µg/L	No recent samples	No recent samples	Not recorded
10	LakeThurston	No recent samples	29.5 µg/L	9.4 µg/L	No recent samples	No recent samples	✓ Public
11	LakeThurston	No recent samples	26 µg/L	7.2 µg/L	No recent samples	No recent samples	✓ Public
12	LakeThurston	No recent samples	126.5 µg/L	34 µg/L	No recent samples	No recent samples	✓ Public
	LakeThurston	No recent samples	32 µg/L	2.7 µg/L	No recent samples	No recent samples	Not recorded
	LakeThurston	No recent samples	33 µg/L	7.5 µg/L	No recent samples	No recent samples	Not recorded
	LakeThurston	No recent samples	27 µg/L	11.6 µg/L	No recent samples	No recent samples	Not recorded
	Bald Hill LakeThurston	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Alder LakeThurston	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	✓ Public
	La Grande ReservoirThurston	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Elbow LakeThurston	No recent samples	No recent samples	No recent samples	No recent samples	25 ft	Not recorded
	Skookumchuck ReservoirThurston	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Scott LakeThurston	No recent samples	No recent samples	No recent samples	No recent samples	18 ft	Not recorded
	Pitman LakeThurston	No recent samples	No recent samples	No recent samples	No recent samples	15 ft	Not recorded
	Munn LakeThurston	No recent samples	No recent samples	No recent samples	No recent samples	19 ft	✓ Public
	Simmons LakeThurston	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Hewitt LakeThurston	No recent samples	No recent samples	No recent samples	No recent samples	60 ft	Not recorded
	Chambers LakeThurston	No recent samples	No recent samples	No recent samples	No recent samples	8 ft	Not recorded
	Pattison LakeThurston	No recent samples	No recent samples	No recent samples	No recent samples	20 ft	✓ Public
	Tempo LakeThurston	No recent samples	No recent samples	No recent samples	No recent samples	21 ft	Not recorded
	McIntosh LakeThurston	No recent samples	No recent samples	No recent samples	No recent samples	11 ft	✓ Public

NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.

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Browse every Washington lake, or the full directory of lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..

Source: the Washington State Department of Ecology. See data sources.