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LakeQuality
D

Lake Ovid

Clinton County, WisconsinLimited DataEutrophic

Lake Ovid is a 413-acre productive, nutrient-rich eutrophic lake in Clinton County, MI. Water quality is graded D based on 1 sampling years through 2023. The lake supports 1 documented fish species including Redear sunfish. Compared to the 5 other monitored lakes in Clinton County, Lake Ovid ranks #6 for water quality.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-05-14. 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 6.5 ft. Trophic State Index: 50.

MetricValueGrade
Water Clarity (Secchi Depth)6.5 ftD
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)50Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Surface Area413 acres

Fish Species

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

→ Best fishing times for Lake Ovid (14-day solunar calendar)

→ Is it safe to eat fish from Lake Ovid? (mercury & PFAS guide)

Lake Ovid fishing regulations (limits, seasons, special rules)

Location

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County Ranking

Ranked #6 of 6 lakes in Clinton County

Cleaner Lakes Within 30 Miles

Lake Ovid holds Grade D. 4 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Clinton County

Reservoir Info (USACE NID)

Lake Ovid is a man-made reservoir impounded by the Sleepy Hollow Dam (completed 1974), built primarily for flood risk reduction on the Little Maple River; earth-type dam, 30 ft tall and 1,072 ft long.

Surface area
413 ac
Normal storage
3,923 ac-ft
Max storage
7,919 ac-ft
Drainage area
10.4 sq mi
Hazard class
Significant
Owner
MDNR Parks & Recreation

Source: USACE National Inventory of Dams, NID ID MI00717 · Operator website

EPA Impairment Status

Lake Ovid 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)

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

Source: EPA ATTAINS assessment unit MI040500050104-03 · 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: 2023-05-14

Monitoring stations: 1