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C

Bakkens Pond

Sauk County, WisconsinEutrophic

Bakkens Pond earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade. Clarity is the limiting factor — phosphorus is reasonable but suspended particles or algal cells keep water transparency below Wisconsin norms.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. At 60 acres, Bakkens Pond sits below the Wisconsin median: a small water where shoreline activity has an outsized effect on water quality. Bakkens Pond sits at rank 6 of 11 in Sauk County, in the lower half of the local distribution.

Bakkens Pond has no invasive species recorded in Wisconsin state databases as of 2025, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Bakkens Pond, which usually reflects a lack of formal fisheries survey work rather than an empty lake. 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 2025-10-29. Grade methodology: LakeGrade methodology.

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Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Very murky, less than 2.5 ft of visibility. Phosphorus level: 23.3 µg/L. Trophic State Index: 57.

MetricValueGrade
Water Clarity (Secchi Depth)2.5 ftF
Phosphorus23.3 µg/LB
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)57Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Surface Area60 acres
Public AccessYes

Water Quality Trend: Declining

Based on 5 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Stable+0.047 m/yr5
Phosphorus Declining+1.55 µg/L/yr5
See year-by-year chart →

Recreation & Access

1
Boat Landings
Yes
Public Access

Location

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County Ranking

Ranked #6 of 11 lakes in Sauk County

Cleaner Lakes Within 30 Miles

Bakkens Pond holds Grade C. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Sauk County

Reservoir Info (USACE NID)

Bakkens Pond is a man-made reservoir impounded by the Bakkens Pond (completed 1968), built primarily for other on the INLET TO LONG LAKE FLOWAGE; earth-type dam, 10 ft tall and 1,700 ft long.

Surface area
60 ac
Normal storage
60 ac-ft
Max storage
300 ac-ft
Drainage area
16.3 sq mi
Hazard class
Low
Owner
Wisconsin Department of Natural Resources

Source: USACE National Inventory of Dams, NID ID WI00879 · Operator website

EPA Impairment Status

Bakkens Pond is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Nutrients (phosphorus, nitrogen)

Source: EPA ATTAINS assessment unit WI10028530 · Official waterbody report · Matched by proximity (2.35 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

Fish and recreation data from Wisconsin DNR Lakes

Public boat-access points from the USGS National Boat Ramps inventory

Most recent sample: 2025-10-29

Monitoring stations: 1

Where to stay near Bakkens Pond

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