Loto Lake is a productive, nutrient-rich eutrophic lake in Camden County, Missouri. Water quality is graded C based on 3 sampling years through 2024. Overall water quality is declining over recent sampling years. Compared to the 41 other monitored lakes in Camden County, Loto Lake ranks #21 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-09-20. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 4.4 ft. Phosphorus level: 38 µg/L. Chlorophyll-a: 12.8 µg/L. Trophic State Index: 56.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.4 ft | D |
| Phosphorus | 38 µg/L | C |
| Chlorophyll-a (Algae) | 12.8 µg/L | C |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Loto Lake
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Fishing Loto Lake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.018 m/yr | 5 |
| Phosphorus | → Stable | +0.27 µg/L/yr | 5 |
| Chlorophyll-a | ↓ Declining | +0.6 µg/L/yr | 5 |
Water Temperature
Loto Lake averages about 84°F at the surface in summer, usually warmest in Jul (about 87°F) and coldest in Apr (about 60°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 94 field readings (2010–2024) via the EPA Water Quality Portal.
Location
County Ranking
Ranked #21 of 42 lakes in Camden County
Cleaner Lakes Within 30 Miles
Loto Lake holds Grade C. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Camden County
Explore Loto Lake across LakeGrade
Species activity outlook by water temperature and season
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Where to stay at Missouri's top lakes, each with its grade
High nutrients, frequent algae, reduced clarity
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Other Grade C Lakes in Missouri
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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
5 EPA-permitted facilities operate within about 5 miles of Loto Lake under Clean Water Act (NPDES) discharge permits. 2 facilities have a reported Clean Water Act violation in the past three years.
- Steep Lane WwtfOsage Beach · 1 mi away · NPDES MO0130664Recent violation
- Knolls Resort Condominiums WwtfOsage Beach · 1.2 mi away · NPDES MO0099040Recent violation
- Three Seasons CondominiumsOsage Beach · 0.7 mi away · NPDES MO0103047
- Cimarron Bay/Harbor Bay CondominiumsSunrise Beach · 1.5 mi away · NPDES MO0116921
- Evergreens CondominiumsSunrise Beach · 2 mi away · NPDES MO0117765
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
Most recent sample: 2024-09-20
Monitoring stations: 1