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Twin Falls Flowage Us Twin Falls Dam Lake

Florence County, WisconsinLimited DataOligotrophic

On the LakeGrade rubric, Twin Falls Flowage Us Twin Falls Dam Lake pulls an A: clarity at 23.0 ft and phosphorus readings still being added put it in the top bracket for Wisconsin. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Trophically, Twin Falls Flowage Us Twin Falls Dam Lake reads as oligotrophic — nutrient-poor, clear, and ecologically more sensitive to disturbance than richer lakes. Twin Falls Flowage Us Twin Falls Dam Lake is unusually deep for Wisconsin at 50 ft, which buffers the lake against summer warming and helps the deep water stay oxygenated. The lake's 570 acres and partial shoreline records put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Within the 39 graded lakes of Florence County, Twin Falls Flowage Us Twin Falls Dam Lake sits at rank 34, near the bottom of the county list.

Twin Falls Flowage Us Twin Falls Dam Lake carries an invasive watermilfoil record — boat-launch decontamination and shoreline care matter more here than at uninfested lakes. The fishery includes walleye alongside the lake's other 6 documented species — a notable draw for Wisconsin anglers. A documented public access point at Twin Falls Flowage Us Twin Falls Dam Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2023-07-21. Grade methodology: LakeGrade methodology.

Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

Crystal clear, you can see 23 ft down. Trophic State Index: 32.

MetricValueGrade
Water Clarity (Secchi Depth)23 ftA
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)32Oligotrophic

Low nutrients, clear water, excellent for swimming

Lake Details

CharacteristicValue
Maximum Depth50 ft
Surface Area570 acres
Public AccessYes

Fish Species

Click a species to see all Wisconsin and Minnesota lakes where it is found.

→ Best fishing times for Twin Falls Flowage Us Twin Falls Dam Lake (14-day solunar calendar)

→ Is it safe to eat fish from Twin Falls Flowage Us Twin Falls Dam Lake? (mercury & PFAS guide)

Twin Falls Flowage Us Twin Falls Dam Lake fishing regulations (limits, seasons, special rules)

Invasive Species

Chinese Mystery SnailEurasian Water-MilfoilHybrid Eurasian / Northern Water-MilfoilRusty CrayfishSpiny Waterflea

Recreation & Access

1
Boat Landings
Yes
Public Access

Location

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County Ranking

Ranked #34 of 39 lakes in Florence County

Nearby Lakes in Florence County

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. 2 stations on file (most recent sample 2023).

Fish Species (DNR-rated)

Panfish(Common)Largemouth Bass(Common)Smallmouth Bass(Common)Northern Pike(Common)Walleye(Common)Musky(Present)

DNR Reports & Resources

Wisconsin DNR Fisheries scientists publish multi-year survey reports for Twin Falls Flowage Us Twin Falls Dam Lake covering fish populations, stocking, water quality, and management. 1 report on file.

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Fish and recreation data from Wisconsin DNR Lakes

Most recent sample: 2023-07-21

Monitoring stations: 1