W Arm Loto Lake
Camden County, MissouriView mapDirections
Missouri DNR publishes the water-quality measurements for W Arm Loto Lake. Here is what has been measured.
- Eutrophic
- Impaired · Algal growth
- Public access
W Arm Loto Lake in Camden County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Water clarity: 2.7 ft visibility. Phosphorus: 67 µg/L. Chlorophyll-a (algae): 23 µg/L.
W Arm Loto Lake is a productive, nutrient-rich eutrophic lake in Camden County, Missouri. 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. Methodology: how these readings are compared.
What W Arm Loto Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch5 documented ramps
Swimming conditions
Readings onlyAlgae risk
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. W Arm Loto Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.
Whether W Arm Loto Lake is safe to swim in today is a call for the Missouri Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for W Arm Loto Lake
These are the measurements Missouri DNR publishes for W Arm Loto Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2.7 ft of visibility. Phosphorus 67 µg/L. Chlorophyll-a 23 µg/L. TSI 63.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.7ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 67µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 23µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 63 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about W Arm Loto Lake
Answers come straight from the public measurements and survey records on this page.
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.
Column height runs from this lake’s coldest month (61°F) to its warmest (86°F).
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
Stays via Stay22
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 readings cover nutrients and algae, not lodging. Cabins and rentals around W Arm Loto Lake are listed below.
Top-rated places to stay near W Arm Loto Lake
Prices for Oct 23–25, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip? Cabins and lodging at W Arm Loto Lake → · more Missouri lake trips
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Fishing W Arm Loto Lake
Water Quality Trend: Worsening
Based on 5 years of monitoring (2020–2024).
Water clarity
Worsening5 years
Phosphorus
Worsening+5.86 µg/L/yr5 years
Chlorophyll-a
Improving-0.96 µg/L/yr5 years
EPA Impairment Status
W Arm Loto Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit MO_7205.00 · Official waterbody report
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.
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. Its water-quality measurements are published by Missouri DNR and shown on this page as reported.
What is the water quality of W Arm Loto Lake?
- W Arm Loto Lake in Camden County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. 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?
- Nutrient and algae readings are not a swimming clearance. W Arm Loto Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. 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.
Can I fish at W Arm Loto Lake?
- W Arm Loto Lake has 5 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Missouri's fish and wildlife agency, so check its current regulations before you go.
Explore W Arm Loto Lake across LakeQuality
Species activity outlook by water temperature and season
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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)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Named boat-access points from the USGS National Boat Ramps inventory