Question 1

How clean is Dead Colt Creek Dam Lake?

Accepted Answer

Dead Colt Creek Dam Lake has very poor water quality and a high algae bloom risk. It received a water quality grade of F (Very Poor) based on EPA monitoring data. Water clarity (Secchi depth): 3.3 ft. Chlorophyll-a (algae): 32.3 µg/L. Trophic State Index: 62.

Question 2

What is the water clarity of Dead Colt Creek Dam Lake?

Accepted Answer

Dead Colt Creek Dam Lake has a Secchi depth (water clarity) of 3.3 feet. That is moderate clarity, typical of lakes with some nutrient enrichment.

Question 3

Does Dead Colt Creek Dam Lake have an algae problem?

Accepted Answer

Dead Colt Creek Dam Lake has a chlorophyll-a (algae) level of 32.3 µg/L. That is high — the lake is at meaningful risk of harmful algal bloom advisories in summer.

Question 4

Is Dead Colt Creek Dam Lake polluted?

Accepted Answer

Dead Colt Creek Dam Lake shows pollution indicators consistent with nutrient over-enrichment (typically phosphorus from agricultural runoff, fertilizer, or failing septic systems). Its grade of F reflects elevated nutrient and algae levels.

Metric	Dead Colt Creek Dam Lake	Wisconsin avg
Overall Grade	F	C
Water Clarity (Secchi)	3.3 ft	—
Chlorophyll-a (Algae)	32.3 µg/L	<10 = clean
Trophic State Index	62	<50 = clean

How Clean Is Dead Colt Creek Dam Lake?

Cleanliness Snapshot

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