D

Crockery Lake

Ottawa County, WisconsinLimited DataEutrophic

Crockery Lake is a productive, nutrient-rich eutrophic lake in Ottawa County, MI. Water quality is graded D based on 1 sampling years through 2023. Compared to the 4 other monitored lakes in Ottawa County, Crockery Lake ranks #4 for water quality.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-06-19. Grade methodology: LakeGrade methodology.

Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Murky, only visible to about 3.5 ft. Trophic State Index: 59.

Metric	Value	Grade
Water Clarity (Secchi Depth)	3.5 ft	D
Phosphorus	No data
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	59	Eutrophic

High nutrients, frequent algae, reduced clarity

Location

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County Ranking

Ranked #4 of 5 lakes in Ottawa County

Cleaner Lakes Within 30 Miles

Crockery Lake holds Grade D. 2 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Ottawa County

Crockery Lake Southwest Basin; Chester Township

Crockery Lake Northeast Basin; Chester Township

More Wisconsin Lake Rankings

Cleanest lakes in Wisconsin

Top 25 by overall water quality score

Best swimming lakes in Wisconsin

Grade A/B + low algae filter

Family fishing lakes in Wisconsin

Panfish-rich, public access

All Wisconsin lakes

Full state directory

Other Grade D Lakes in Wisconsin

Newaygo County · Clarity: 4.5 ft

Community College Pond

Chippewa County · Clarity: 1.5 ft

Little Beaver Lake

Alger County · Clarity: 6.2 ft

Iosco County · Clarity: 5.5 ft

Chippewa County · Clarity: 1.3 ft

Cass County · Clarity: 6 ft

Eutrophic Lakes in Wisconsin

Kimball Lake Van Etten Lake North Central Basin; Oscoda Township Community College Pond Pentwater Lake Northwest Basin; Pentwater Township

EPA Impairment Status

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

Causes of impairment

MercuryNutrients (phosphorus, nitrogen)Oxygen depletion (low DO)

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

Source: EPA ATTAINS assessment unit MI040500060601-01 · Official waterbody report

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: 2023-06-19

Monitoring stations: 1