What is the water quality grade for Castlenovo Lake?

Castlenovo Lake in Warren County, Wisconsin received a water quality grade of B (Good). Water clarity: 6 ft visibility. Phosphorus: 16.8 µg/L. Chlorophyll-a (algae): 2.9 µg/L. Surface area: 10 acres.

Is Castlenovo Lake safe to swim in?

Good for swimming, clear water with low algae levels. Castlenovo Lake has an overall water quality grade of B. Algae concentration (chlorophyll-a) is 2.9 µg/L. Always check local health department advisories before swimming.

Castlenovo Lake

Warren County, WisconsinMesotrophic

Castlenovo Lake is a 10-acre mesotrophic lake in Warren County, MO. Water quality is graded B based on 3 sampling years through 2024. Compared to the 15 other monitored lakes in Warren County, Castlenovo Lake ranks #5 for water quality.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-09-21. Grade methodology: LakeGrade methodology.

Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Murky, only visible to about 6 ft. Phosphorus level: 16.8 µg/L. Chlorophyll-a: 2.9 µg/L. Trophic State Index: 46.

Metric	Value	Grade
Water Clarity (Secchi Depth)	6 ft	D
Phosphorus	16.8 µg/L	A
Chlorophyll-a (Algae)	2.9 µg/L	A
Trophic State Index (TSI)	46	Mesotrophic

Moderate nutrients, good water quality

Lake Details

Characteristic	Value
Surface Area	10 acres

Location

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County Ranking

Ranked #5 of 16 lakes in Warren County

Cleaner Lakes Within 30 Miles

Castlenovo Lake holds Grade B. 2 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Warren County

Sherwood Lake Nr. Dam

Warren County

Sherwood Lake

Warren County

Innsbrook Lake Nr. Dam

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Other Grade B Lakes in Wisconsin

Table Rock Lake

Taney County · Clarity: 10 ft

Lake Taneycomo @ Rockaway Beach

Taney County · Clarity: 8.7 ft

Forest Lake

Adair County · Clarity: 4.1 ft

Fox Valley Lake

Clark County · Clarity: 8.5 ft

Table Rock L. Nr. Perkins Hollow Lake

Stone County · Clarity: 6.9 ft

Loto Upstream of Dam Lake

Miller County · Clarity: 6.7 ft

Mesotrophic Lakes in Wisconsin

Table Rock Lake Forest Lake Fox Valley Lake Table Rock L. Nr. Perkins Hollow Lake

Reservoir Info (USACE NID)

Castlenovo Lake is a man-made reservoir impounded by the Castelenovo Lake Dam (completed 1976), built primarily for recreation on the TR CHARRETTE CREEK; earth-type dam, 37 ft tall and 310 ft long.

Surface area: 10 ac
Normal storage: 109 ac-ft
Max storage: 160 ac-ft
Drainage area: 0.2 sq mi
Hazard class: High

Source: USACE National Inventory of Dams, NID ID MO30793 · Operator website · Matched by proximity (0.05 km)

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2024-09-21

Monitoring stations: 1