Loto Lake is a productive, nutrient-rich eutrophic lake in Camden County, Missouri. Water quality is graded C based on 3 sampling years through 2022. Limited fish-species data available. Public access is available with 2 public boat landings. Compared to the 41 other monitored lakes in Camden County, Loto Lake ranks #24 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2022-07-11. Grade methodology: LakeGrade methodology.
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Swimming Safety
Based on E. coli testing, Loto Lake rarely exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 2% of 342 samples across 8 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Missouri’s current beach and health-department advisories before swimming.
Water Quality Grade: C, Fair
Murky, only visible to about 3.4 ft. Phosphorus level: 42.8 µg/L. Chlorophyll-a: 15.3 µg/L. Trophic State Index: 58.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.4 ft | D |
| Phosphorus | 42.8 µg/L | C |
| Chlorophyll-a (Algae) | 15.3 µg/L | C |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Loto Lake
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Fishing Loto Lake
Recreation & Access
Location
County Ranking
Ranked #24 of 42 lakes in Camden County
Nearby Lakes in Camden County
Explore Loto Lake across LakeGrade
Species activity outlook by water temperature and season
Top lakes and where to stay in the Lake of the Ozarks area
Where to stay at Missouri's top lakes, each with its grade
High nutrients, frequent algae, reduced clarity
Missouri's cleanest and most-polluted lakes, ranked
More Missouri Lake Rankings
Other Grade C Lakes in Missouri
Eutrophic Lakes in Missouri
More records, surveys & data sources
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
12 EPA-permitted facilities operate within about 5 miles of Loto Lake under Clean Water Act (NPDES) discharge permits. 6 facilities have a reported Clean Water Act violation in the past three years.
- Parkview Subdivision WwtpOsage Beach · 0.6 mi away · NPDES MO0099783Recent violation
- Mdnr, Lake Ozarks State Park, Camp HawthKaiser · 1.2 mi away · NPDES MO0112666Recent violation
- Park Place On The Lake Condominiums WwtpKaiser · 1.3 mi away · NPDES MO0117595Recent violation
- Amos Septic Services WwtfCamdenton · 1.7 mi away · NPDES MO0126543Recent violation
- Salt Ridge Estates WwtfMontreal · 4.2 mi away · NPDES MO0128040Recent violation
- Countryside Mhp WwtpMontreal · 4.3 mi away · NPDES MO0122327Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Data Sources
Water quality data from the EPA Water Quality Portal
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Public boat-access points from the USGS National Boat Ramps inventory
Most recent sample: 2022-07-11
Monitoring stations: 1