W Arm Loto Lake
Camden County, MissouriView mapDirections
Nutrients and algae run above the regional average.
- Eutrophic
- #2 of 8 in the county
- Public access
W Arm Loto Lake in Camden County, Missouri has a water quality grade of D (Nutrient-rich). Water clarity: 2.7 ft visibility. Phosphorus: 67 µg/L. Chlorophyll-a (algae): 23 µg/L.
- Clarity
- 2.7 ft
- Typical in September
- 79°F
- Type
- Eutrophic
- Trend
- ↓ Declining
- Public access
- Yes
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Stays near W Arm Loto Lake
Compare lakeside cabins, hotels, and vacation rentals near W Arm Loto Lake in Camden County, Missouri — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around W Arm Loto Lake are listed below.
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W Arm Loto Lake is a productive, nutrient-rich eutrophic lake in Camden County, Missouri. Water quality is graded D based on 2 sampling years through 2024. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 5 public boat landings. Compared to the 7 other monitored lakes in Camden County, W Arm Loto Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-09-17. Grade methodology: LakeQuality methodology.
What W Arm Loto Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch5 documented ramps
Swimming Safety
Grade onlyAlgae risk
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 2.7 ft of visibility. Phosphorus 67 µg/L. Chlorophyll-a 23 µg/L. TSI 63. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.7 ft | Not graded |
| Phosphorus | 67 µg/L | Poor |
| Chlorophyll-a (Algae) | 23 µg/L | Poor |
| Trophic State Index (TSI) | 63 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Water Temperature
W Arm Loto Lake typically sits around 79°F at the surface in September. Summer average is about 84°F. Usually warmest in Aug (about 86°F) and coldest in Apr (about 61°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 71 field readings (2010–2024) via the EPA Water Quality Portal. See the full W Arm Loto Lake water temperature breakdown →
Recreation & Access
- Brown Bend AccessPublic
- Wigwam School AccessPublic
- Coffman MarinaSemi-private
- Ivy Bend Resort & MarineSemi-private
- Patriot Point MarinaSemi-private
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing W Arm Loto Lake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.019 m/yr | 5 |
| Phosphorus | ↓ Declining | +5.86 µg/L/yr | 5 |
| Chlorophyll-a | ↑ Improving | -0.96 µg/L/yr | 5 |
Regulated Pollution Sources Nearby
24 EPA-permitted facilities operate within about 5 miles of W Arm Loto Lake under Clean Water Act (NPDES) discharge permits. 10 facilities have a reported Clean Water Act violation in the past three years.
- Shimmering ShoresGravois Mills · 0.5 mi away · NPDES MO0130346Recent violation
- Ivy Bend Resort And MarinaStover · 1.2 mi away · NPDES MO0130605Recent violation
- Klein LemonGravois Mills · 1.4 mi away · NPDES MO0137391Recent violation
- Moonies Resort WwtfClimax Springs · 1.5 mi away · NPDES MO0140252Recent violation
- Admiral'S Point SubdivisionClimax Springs · 2.3 mi away · NPDES MO0124354Recent violation
- Lake Home Neighbor'S WwtfStover · 3.4 mi away · NPDES MO0124001Recent 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.
County Ranking
Ranked #2 of 8 lakes in Camden County
Nearby Lakes in Camden County
Frequently asked questions about W Arm Loto Lake
Where is W Arm Loto Lake?
- W Arm Loto Lake is a lake in Camden County, Missouri. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for W Arm Loto Lake?
- W Arm Loto Lake in Camden County, Missouri has a water quality grade of D (Nutrient-rich). Water clarity: 2.7 ft visibility. Phosphorus: 67 µg/L. Chlorophyll-a (algae): 23 µg/L.
Is W Arm Loto Lake safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
What is the water temperature of W Arm Loto Lake?
- W Arm Loto Lake typically sits around 79°F at the surface in September, from 71 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
Are there boat ramps on W Arm Loto Lake?
- W Arm Loto Lake has 5 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Brown Bend Access, Wigwam School Access, Coffman Marina, Ivy Bend Resort & Marine, among others. Public access is listed as yes.
Explore W Arm Loto Lake across LakeQuality
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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Where this data comes from
116 measurements from 1 monitoring station, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Univ. of Missouri, Columbia
UMC116 samples · 2020–2024
Analytical methods
- Depth, Secchi disk in meters
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Named boat-access points from the USGS National Boat Ramps inventory