Jamesport Community Lake is a 30-acre highly nutrient-loaded hypereutrophic lake in Daviess County, Missouri. Water quality is graded F based on 3 sampling years through 2024. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 1 other monitored lakes in Daviess County, Jamesport Community Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-06-10. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 0.9 ft of visibility. Phosphorus level: 160.3 µg/L. Chlorophyll-a: 111.4 µg/L. Trophic State Index: 78.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.9 ft | F |
| Phosphorus | 160.3 µg/L | F |
| Chlorophyll-a (Algae) | 111.4 µg/L | F |
| Trophic State Index (TSI) | 78 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 30 acres |
| Public Access | Yes |
Where to stay near Jamesport Community Lake
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Fishing Jamesport Community Lake
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↑ Improving | -33.8 µg/L/yr | 2 |
| Chlorophyll-a | ↑ Improving | -33.4 µg/L/yr | 2 |
Recreation & Access
Water Temperature
Jamesport Community Lake averages about 83°F at the surface in summer, usually warmest in Jul (about 84°F) and coldest in May (about 70°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 17 field readings (2010–2024) via the EPA Water Quality Portal. See the full Jamesport Community Lake water temperature breakdown →
Location
County Ranking
Ranked #2 of 2 lakes in Daviess County
Cleaner Lakes Within 30 Miles
Jamesport Community Lake holds Grade F. 5 nearby lakes hold higher grades.
- BNorth Bethany City ReservoirHarrison County · 24 mi · Two grade letters higher (F → B)
- DIndian Creek LakeLivingston County · 10.5 mi · Higher grade (F → D)
- DJamesport City LakeDaviess County · 1.8 mi · Higher grade (F → D)
- DHamilton LakeCaldwell County · 20.3 mi · Higher grade (F → D)
- DLake PahoMercer County · 29.6 mi · Higher grade (F → D)
Nearby Lakes in Daviess County
Explore Jamesport Community Lake across LakeGrade
Species activity outlook by water temperature and season
Where to stay at Missouri's top lakes, each with its grade
Very high nutrients, dense algae, poor clarity
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Other Grade F Lakes in Missouri
Hypereutrophic Lakes in Missouri
More records, surveys & data sources
Reservoir Info (USACE NID)
Jamesport Community Lake is a man-made reservoir impounded by the Jamesport Lake Dam (completed 1956), built primarily for recreation on the TR-EAST BRUSHY CREEK; earth-type dam, 21 ft tall.
- Surface area
- 30 ac
- Normal storage
- 160 ac-ft
- Max storage
- 337 ac-ft
- Drainage area
- 275 sq mi
- Hazard class
- Low
- Owner
- MO DEPT OF CONSERVATION
Source: USACE National Inventory of Dams, NID ID MO10663 · Operator website · Matched by proximity (0.05 km)
EPA Impairment Status
Jamesport Community Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MO_7105.00 · Official waterbody report
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Public boat-access points from the USGS National Boat Ramps inventory
Most recent sample: 2024-06-10
Monitoring stations: 1