What is the water quality grade for Hurdsfield-Tuffy Lake?

Hurdsfield-Tuffy Lake in Wells County, Wisconsin received a water quality grade of C (Fair). Water clarity: 9.5 ft visibility. Chlorophyll-a (algae): 10.3 µg/L. Surface area: 7 acres.

Is Hurdsfield-Tuffy Lake safe to swim in?

Generally safe for swimming, moderate water quality. Hurdsfield-Tuffy Lake has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 10.3 µg/L. Always check local health department advisories before swimming.

Hurdsfield-Tuffy Lake

Wells County, WisconsinMesotrophic

Hurdsfield-Tuffy Lake is a 7-acre mesotrophic lake in Wells County, ND. Water quality is graded C based on 2 sampling years through 2021. Compared to the 1 other monitored lakes in Wells County, Hurdsfield-Tuffy Lake ranks #1 for water quality.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2021-10-04. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Moderate clarity, visible to about 9.5 ft. Chlorophyll-a: 10.3 µg/L. Trophic State Index: 49.

Metric	Value	Grade
Water Clarity (Secchi Depth)	9.5 ft	C
Phosphorus	No data
Chlorophyll-a (Algae)	10.3 µg/L	C
Trophic State Index (TSI)	49	Mesotrophic

Moderate nutrients, good water quality

Lake Details

Characteristic	Value
Surface Area	7 acres

Location

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County Ranking

Ranked #1 of 2 lakes in Wells County

Cleaner Lakes Within 30 Miles

Hurdsfield-Tuffy Lake holds Grade C. 2 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Wells County

More Wisconsin Lake Rankings

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Other Grade C Lakes in Wisconsin

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Griggs County · Clarity: 5.6 ft

Fordville Dam Lake

Grand Forks County · Clarity: 4.4 ft

Silver Lake

Sargent County · Clarity: 5.9 ft

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Reservoir Info (USACE NID)

Hurdsfield-Tuffy Lake is a man-made reservoir impounded by the Thompson Dam; Norman 1 (completed 1968), built primarily for recreation on the James River-TR; earth-type dam, 22 ft tall and 368 ft long.

Surface area: 7 ac
Normal storage: 44 ac-ft
Max storage: 68 ac-ft
Drainage area: 0.44 sq mi
Hazard class: Low
Owner: Norman Thompson

All listed purposes: Recreation;Fish and Wildlife Pond.

Source: USACE National Inventory of Dams, NID ID ND00773 · Operator website · Matched by proximity (0.81 km)

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2021-10-04

Monitoring stations: 1