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F

Klawitter Pond

Washington County, MinnesotaEutrophic

Klawitter Pond grades an F: water clarity, phosphorus, and chlorophyll-a all rate poorly, placing it among the most stressed lakes monitored in Minnesota. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

At a TSI of 68, Klawitter Pond reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Klawitter Pond ranks 82 of 83 in Washington County — at the lower end of the locally monitored distribution.

Klawitter Pond has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Klawitter Pond, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The lake lacks a documented public access point, so visitor use is limited. Ice-out has been recorded 5 times at Klawitter Pond, with a median around Mar 23. Multiple sampling years from Minnesota PCA volunteers and partner agencies back the grade, so the letter should hold steady absent a major watershed shift.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-10-20. Grade methodology: LakeGrade methodology.

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Swimming Safety

Avoid swimming, very poor water quality, potential algae toxins

Water Quality Grade: F, Very Poor

Very murky, less than 1.9 ft of visibility. Phosphorus level: 96 µg/L. Chlorophyll-a: 39 µg/L. Trophic State Index: 68.

MetricValueGrade
Water Clarity (Secchi Depth)1.9 ftF
Phosphorus96 µg/LF
Chlorophyll-a (Algae)39 µg/LF
Trophic State Index (TSI)68Eutrophic

High nutrients, frequent algae, reduced clarity

Ice Season

Historical ice data from Minnesota DNR (12 observations).

Typical Ice-Out
Mar 23
Typical Ice-In
Dec 5

Estimated open water season: 257 days

EarliestLatest
Ice-Out2016-03-13 (2016)2014-04-18 (2014)
Ice-In2014-11-12 (2014)2015-12-18 (2015)

Most recent ice-out: 2017-03-23

Location

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County Ranking

Ranked #82 of 83 lakes in Washington County

Cleaner Lakes Within 30 Miles

Klawitter Pond holds Grade F. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Washington County

EPA Impairment Status

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

Causes of impairment

Impaired biota (cause unknown)Mercury

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit MN82-0104-00 · Official waterbody report · Matched by proximity (2.2 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

Ice data from Minnesota DNR Climate

Most recent sample: 2024-10-20

Monitoring stations: 1