Loto Lake is a productive, nutrient-rich eutrophic lake in Camden County, Missouri. Water quality is graded D based on 3 sampling years through 2024. Water clarity is improving over recent sampling years. Compared to the 41 other monitored lakes in Camden County, Loto Lake ranks #31 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-08-29. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Very murky, less than 3 ft of visibility. Phosphorus level: 43 µg/L. Chlorophyll-a: 17.9 µg/L. Trophic State Index: 60.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 ft | F |
| Phosphorus | 43 µg/L | C |
| Chlorophyll-a (Algae) | 17.9 µg/L | C |
| Trophic State Index (TSI) | 60 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Loto Lake
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Fishing Loto Lake
Water Quality Trend: → Stable
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.03 m/yr | 5 |
| Phosphorus | → Stable | -0.4 µg/L/yr | 5 |
| Chlorophyll-a | ↓ Declining | +2.21 µg/L/yr | 5 |
Water Temperature
Loto Lake averages about 85°F at the surface in summer, usually warmest in Jul (about 87°F) and coldest in Apr (about 63°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 99 field readings (2010–2024) via the EPA Water Quality Portal.
Location
County Ranking
Ranked #31 of 42 lakes in Camden County
Cleaner Lakes Within 30 Miles
Loto Lake holds Grade D. 5 nearby lakes hold higher grades.
- CRacetrack Hollow @ Hwy. D LakeCamden County · 2.8 mi · Higher grade (D → C)
- CLoto Ha Ha Tonka Branch Mouth LakeCamden County · 3.5 mi · Higher grade (D → C)
- CLoto LakeCamden County · 4.5 mi · Higher grade (D → C)
- CLoto LakeCamden County · 7.8 mi · Higher grade (D → C)
- CLoto LakeCamden County · 9.1 mi · Higher grade (D → C)
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 D 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
26 EPA-permitted facilities operate within about 5 miles of Loto Lake under Clean Water Act (NPDES) discharge permits. 9 facilities have a reported Clean Water Act violation in the past three years.
- Gorman Peterson WwtfCamdenton · 0.3 mi away · NPDES MO0126390Recent violation
- Isle Pointe And Isle View SubdivisionCamdenton · 0.3 mi away · NPDES MO0110761Recent violation
- Bridal Cave Development WwtfCamdenton · 0.7 mi away · NPDES MO0113701Recent violation
- Oak Bluff Condominiums WwtfCamdenton · 0.7 mi away · NPDES MO0107913Recent violation
- Vision CondominiumsCamdenton · 2.4 mi away · NPDES MO0122025Recent violation
- Sierra Bay CondominiumsCamdenton · 2.6 mi away · NPDES MO0132756Recent 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
Most recent sample: 2024-08-29
Monitoring stations: 1