Jamesport Community Lake
Daviess County, Missouri30 acresView mapDirections
Nutrients and algae run well above the regional average.
- Hypereutrophic
- Impaired · Algal growth
- #1 of 1 in the county
- Public access
- Limited data
Jamesport Community Lake in Daviess County, Missouri has a water quality grade of F (Algae-prone). Water clarity: 0.9 ft visibility. Phosphorus: 160.3 µg/L. Chlorophyll-a (algae): 111.4 µg/L. Surface area: 30 acres.
- Clarity
- 0.9 ft
- Typical in July
- 84°F
- Area
- 30 acres
- Type
- Hypereutrophic
- Phosphorus
- 160.3 µg/L
- Chlorophyll-a
- 111.4 µg/L
- Trend
- ↑ Improving
- Public access
- Yes
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Compare lakeside cabins, hotels, and vacation rentals near Jamesport Community Lake in Daviess 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 Jamesport Community Lake are listed below.
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Watch Jamesport Community Lake’s letter
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Jamesport Community Lake is a 30-acre highly nutrient-loaded hypereutrophic lake in Daviess County, Missouri. Water quality is graded F based on 2 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.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-06-10. Grade methodology: LakeQuality methodology.
What Jamesport Community Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming Safety
Grade onlyLimited data
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 F is nutrients and algae, not a swimming clearance. Jamesport Community Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.
Water Quality Grade: F (Algae-prone)
Very murky, less than 0.9 ft of visibility. Phosphorus 160.3 µg/L. Chlorophyll-a 111.4 µg/L. TSI 78. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.9 ft | Not graded |
| Phosphorus | 160.3 µg/L | Poor |
| Chlorophyll-a (Algae) | 111.4 µg/L | Poor |
| Trophic State Index (TSI) | 78 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Water Temperature
Jamesport Community Lake typically sits around 84°F at the surface in July. Summer average is about 83°F. 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 →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 30 acres |
| Public Access | Yes |
No bathymetric survey has been published for Jamesport Community Lake, so its depth is not documented here.
Recreation & Access
- Jamesport Community LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
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 |
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
County Ranking
Ranked #1 of 1 lakes in Daviess County
Nearby Lakes in Daviess County
Frequently asked questions about Jamesport Community Lake
Where is Jamesport Community Lake?
- Jamesport Community Lake is a lake in Daviess County, Missouri. LakeQuality grades it F for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Jamesport Community Lake?
- Jamesport Community Lake in Daviess County, Missouri has a water quality grade of F (Algae-prone). Water clarity: 0.9 ft visibility. Phosphorus: 160.3 µg/L. Chlorophyll-a (algae): 111.4 µg/L. Surface area: 30 acres.
Is Jamesport Community Lake safe to swim in?
- The F is nutrients and algae, not a swimming clearance. Jamesport Community 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 Jamesport Community Lake?
- Jamesport Community Lake typically sits around 84°F at the surface in July, from 17 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 Jamesport Community Lake?
- Jamesport Community Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Jamesport Community Lake. Public access is listed as yes.
Explore Jamesport Community Lake across LakeQuality
Species activity outlook by water temperature and season
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Very high nutrients, dense algae, poor clarity
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Where this data comes from
18 measurements from 1 monitoring station, 2023–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Univ. of Missouri, Columbia
UMC18 samples · 2023–2024
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
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory