What is the water quality grade for Rinquelin Trail Comm. Lake?

Rinquelin Trail Comm. Lake in Maries County, Wisconsin received a water quality grade of C (Fair). Water clarity: 4.5 ft visibility. Phosphorus: 39 µg/L. Chlorophyll-a (algae): 12.8 µg/L. Surface area: 27 acres.

Is Rinquelin Trail Comm. Lake safe to swim in?

Generally safe for swimming, moderate water quality. Rinquelin Trail Comm. Lake has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 12.8 µg/L. Always check local health department advisories before swimming.

Rinquelin Trail Comm. Lake

Maries County, WisconsinEutrophic

Rinquelin Trail Comm. Lake is a 27-acre productive, nutrient-rich eutrophic lake in Maries County, MO. Water quality is graded C based on 3 sampling years through 2022.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2022-07-29. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Murky, only visible to about 4.5 ft. Phosphorus level: 39 µg/L. Chlorophyll-a: 12.8 µg/L. Trophic State Index: 56.

Metric	Value	Grade
Water Clarity (Secchi Depth)	4.5 ft	D
Phosphorus	39 µg/L	C
Chlorophyll-a (Algae)	12.8 µg/L	C
Trophic State Index (TSI)	56	Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

Characteristic	Value
Surface Area	27 acres

Location

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County Ranking

Ranked #1 of 1 lakes in Maries County

Cleaner Lakes Within 30 Miles

Rinquelin Trail Comm. Lake holds Grade C. 4 nearby lakes hold higher grades.

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Other Grade C Lakes in Wisconsin

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Waukomis Lake

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Little Prairie Lake by Dam

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Eutrophic Lakes in Wisconsin

Aspen Lake Along Southern Arm Boathouse Lake Hunnewell Lake Long Branch Lk. Lake

Reservoir Info (USACE NID)

Rinquelin Trail Comm. Lake is a man-made reservoir impounded by the Rinquelin Trail Dam (completed 1972), built primarily for recreation on the LITTLE MARIES; earth-type dam, 35 ft tall and 800 ft long.

Surface area: 27 ac
Normal storage: 372 ac-ft
Max storage: 372 ac-ft
Drainage area: 0.91 sq mi
Hazard class: Significant
Owner: MO DEPT OF CONSERVATION

Source: USACE National Inventory of Dams, NID ID MO30114 · Operator website · Matched by proximity (0.13 km)

EPA Impairment Status

Rinquelin Trail Comm. Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).

Causes of impairment

Mercury

Source: EPA ATTAINS assessment unit MO_7204.00 · Official waterbody report · Matched by proximity (0.23 km)

Data Sources

Water quality data from the EPA Water Quality Portal

Impairment status from EPA ATTAINS 303(d) database

Grading methodology based on Metropolitan Council standards

Most recent sample: 2022-07-29

Monitoring stations: 1