What is the water quality grade for Loto Lake?

Loto Lake in Morgan County, Wisconsin received a water quality grade of D (Poor). Water clarity: 1.3 ft visibility. Phosphorus: 61.5 µg/L. Chlorophyll-a (algae): 18.6 µg/L. Surface area: 7 acres.

Is Loto Lake safe to swim in?

Swimming not recommended, poor water quality with high algae risk. Loto Lake has an overall water quality grade of D. Algae concentration (chlorophyll-a) is 18.6 µg/L. Always check local health department advisories before swimming.

Loto Lake

Morgan County, WisconsinEutrophic

Loto Lake is a 7-acre productive, nutrient-rich eutrophic lake in Morgan County, MO. Water quality is graded D based on 3 sampling years through 2022. Compared to the 37 other monitored lakes in Morgan County, Loto Lake ranks #35 for water quality.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2022-09-01. Grade methodology: LakeGrade methodology.

Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Very murky, less than 1.3 ft of visibility. Phosphorus level: 61.5 µg/L. Chlorophyll-a: 18.6 µg/L. Trophic State Index: 65.

Metric	Value	Grade
Water Clarity (Secchi Depth)	1.3 ft	F
Phosphorus	61.5 µg/L	D
Chlorophyll-a (Algae)	18.6 µg/L	C
Trophic State Index (TSI)	65	Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

Characteristic	Value
Surface Area	7 acres

Location

Loading map…

County Ranking

Ranked #35 of 38 lakes in Morgan County

Cleaner Lakes Within 30 Miles

Loto Lake holds Grade D. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Morgan County

Loto Confluence of Gravois And Indian Creek Lake

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

Boathouse Lake

St. Louis city County · Clarity: 2.3 ft

Hunnewell Lake

Shelby County · Clarity: 3.2 ft

Long Branch Lk. Lake

Macon County · Clarity: 1.8 ft

Harrison County Lake Intake

Harrison County · Clarity: 1.7 ft

Table Rock L. Bl. Hwy. 173 Lake

Stone County · Clarity: 2.3 ft

Henry Sever Lake

Knox County · Clarity: 2.1 ft

Eutrophic Lakes in Wisconsin

Aspen Lake Along Southern Arm Boathouse Lake Hunnewell Lake Long Branch Lk. Lake

Reservoir Info (USACE NID)

Loto Lake is a man-made reservoir impounded by the Mononame 741 (completed 1972), built primarily for recreation on the TR LAKE OF THE OZARKS; earth-type dam, 20 ft tall.

Surface area: 7 ac
Normal storage: 33 ac-ft
Max storage: 75 ac-ft
Drainage area: 121 sq mi
Hazard class: Low
Owner: UNKNOWN

Source: USACE National Inventory of Dams, NID ID MO30230 · Operator website · Matched by proximity (0.61 km)

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2022-09-01

Monitoring stations: 1