Question 1

Cleanest Lakes in Hamilton County, Iowa?

Accepted Answer

Briggs Woods Lake in Hamilton County leads the rankings on measured clarity and nutrients and 1.5 ft of clarity. Below are the top 3 cleanest monitored lakes in Hamilton County, Iowa, ranked on EPA nutrient and algae measurements.

Question 2

What is the cleanest lake in Hamilton County, Iowa?

Accepted Answer

Briggs Woods Lake in Hamilton County has the cleanest nutrient and algae readings in Hamilton County, Iowa, with 1.5 feet of measured water clarity.

Question 3

How are these rankings calculated?

Accepted Answer

Nutrients and algae, total phosphorus, nitrogen, chlorophyll-a and turbidity, are read against EPA National Lakes Assessment 2022 condition classes for that lake’s ecoregion. Water clarity (Secchi depth) is measured and shown separately. Lakes without enough recent samples are listed without a condition class rather than ranked low. Source data comes from the EPA Water Quality Portal.

#	Lake	County	Clarity	Phosphorus	Algae
1	Briggs Woods Lake	Hamilton	1.5 ft	87 µg/L	59.1 µg/L
2	Little Wall Lake	Hamilton	0.7 ft	132 µg/L	76.6 µg/L
3	Goose Lake	Hamilton	-	-	-

Cleanest Lakes in Hamilton County, Iowa

Ranked List

More Answers for Hamilton County, Iowa