What is the water clarity of Brule Lake?

Brule Lake has a Secchi depth (water clarity) of 10 feet. That is exceptional clarity — sunlight penetrates deep and algae remain limited.

Does Brule Lake have an algae problem?

Chlorophyll-a (algae) data is not available for Brule Lake. Phosphorus and Secchi readings can still indicate bloom risk indirectly.

How Clean Is Brule Lake?

Q: Is Brule Lake polluted?

Brule Lake does not show severe pollution. It has limited nutrient and algae sampling on record, and nutrient and algae levels are within or below typical regional ranges.

Brule Lake does not have enough monitoring data to describe. It does not have enough recent summer sampling for a nutrient or algae figure. That means the measurements are missing, not that the water is poor. Everything the monitoring record does contain is below. Water clarity (Secchi depth): 10 ft. Trophic State Index: 44.

Cleanliness Snapshot

Metric	Brule Lake	Minnesota avg
Water Clarity (Secchi)	10 ft	—
Trophic State Index	44	<50 = clean

How does Brule Lake compare?

Brule Lake has too little recent summer sampling to compare, so it is not compared with the Minnesota state average.

Watch Brule Lake water quality

Get an email when the clarity or algae readings change. Unsubscribe anytime.

More on Brule Lake

Is Brule Lake safe for swimming? →What fish are in Brule Lake? →Is Brule Lake polluted? →When Does the Ice Go Out on Brule Lake? Typical Ice-Out May 5 →Full water quality report →Cook County lakes →Cleanest lakes in Cook County →Cleanest lakes in Minnesota →