Loto Lake is a 29-acre productive, nutrient-rich eutrophic lake in Camden County, Missouri. Water quality is graded C based on 3 sampling years through 2023. Overall water quality is improving over recent sampling years. Compared to the 41 other monitored lakes in Camden County, Loto Lake ranks #13 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2023-06-14. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Moderate clarity, visible to about 7.7 ft. Phosphorus level: 23 µg/L. Chlorophyll-a: 12 µg/L. Trophic State Index: 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7.7 ft | C |
| Phosphorus | 23 µg/L | B |
| Chlorophyll-a (Algae) | 12 µg/L | C |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 29 acres |
Where to stay near Loto Lake
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Fishing Loto Lake
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +1.38 m/yr | 2 |
| Phosphorus | ↑ Improving | -17.3 µg/L/yr | 2 |
| Chlorophyll-a | ↑ Improving | -10.8 µg/L/yr | 2 |
Location
County Ranking
Ranked #13 of 42 lakes in Camden County
Cleaner Lakes Within 30 Miles
Loto Lake holds Grade C. 2 nearby lakes hold higher grades.
- BLoto LakeCamden County · 0.8 mi · Higher grade (C → B)
- BLoto LakeCamden County · 1.2 mi · Higher grade (C → B)
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High nutrients, frequent algae, reduced clarity
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More records, surveys & data sources
Reservoir Info (USACE NID)
Loto Lake is a man-made reservoir impounded by the Treeline Lake Dam (completed 1975), built primarily for recreation on the TR-OSAGE RIVER/LK OF OZARKS; earth-type dam, 40 ft tall and 735 ft long.
- Surface area
- 29 ac
- Normal storage
- 580 ac-ft
- Max storage
- 580 ac-ft
- Drainage area
- 0.48 sq mi
- Hazard class
- High
- Owner
- FOUR SEASONS LAKE SITES
Source: USACE National Inventory of Dams, NID ID MO31606 · Operator website · Matched by proximity (0.9 km)
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Loto Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Ro Anda Beach CondominiumsLake Ozark · 0.2 mi away · NPDES MO0104426Recent 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: 2023-06-14
Monitoring stations: 1