Jamesport City Lake
Daviess County, Missouri22 acresView mapDirections
No nutrient or algae sampling on record from Missouri DNR for this lake.
- Impaired · Algal growth
- Limited data
Jamesport City Lake in Daviess County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Surface area: 22 acres.
Jamesport City Lake is a 22-acre lake in Daviess County, Missouri.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-05-23. Methodology: how these readings are compared.
Jamesport City Lake covers about 22 acres in Daviess County. For a place on the water, look through cabin and lake-house rentals near Jamesport City Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Jamesport City Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.
Whether Jamesport City 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 Jamesport City Lake
These are the measurements Missouri DNR publishes for Jamesport City Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data.
Ask about Jamesport City Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Jamesport City Lake typically sits around 80°F at the surface in July. Summer average is about 79°F. Usually warmest in Jul (about 80°F) and coldest in May (about 74°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (74°F) to its warmest (80°F).
Typical surface water temperature by month, from 12 field readings (2013–2024) via the EPA Water Quality Portal. See the full Jamesport City Lake water temperature breakdown →
Lake Details
Surface area
22 acres
No bathymetric survey has been published for Jamesport City Lake, so its depth is not documented here.
Stays via Stay22
Stays near Jamesport City Lake
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Fishing Jamesport City Lake
Reservoir Info (USACE NID)
Jamesport City Lake is a man-made reservoir impounded by the Jamesport City Lake Dam (completed 1955), built primarily for water supply on the TR-EAST BRUSHY CREEK; earth-type dam, 35 ft tall and 580 ft long.
- Surface area
- 22 ac
- Normal storage
- 385 ac-ft
- Max storage
- 385 ac-ft
- Drainage area
- 0.03 sq mi
- Hazard class
- Low
- Owner
- CITY OF JAMESPORT
Source: USACE National Inventory of Dams, NID ID MO10559 · Operator website
EPA Impairment Status
Jamesport City 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_7104.00 · Official waterbody report
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Jamesport City Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Jamesport WwtfJamesport · 1.8 mi away · NPDES MO0087149Recent violation
- Yoder Sausage KitchenJamesport · 1 mi away · NPDES MONX00860
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 Daviess County
Frequently asked questions about Jamesport City Lake
Where is Jamesport City Lake?
- Jamesport City Lake is a lake in Daviess County, Missouri. Its water-quality measurements are published by Missouri DNR and shown on this page as reported.
What is the water quality of Jamesport City Lake?
- Jamesport City Lake in Daviess County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Surface area: 22 acres.
Is Jamesport City Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Jamesport City 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 City Lake?
- Jamesport City Lake typically sits around 80°F at the surface in July, from 12 EPA Water Quality Portal field readings (2013–2024). That is a typical value for the month, not a live reading.
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Where this data comes from
2 measurements from 1 monitoring station, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Univ. of Missouri, Columbia
UMC2 samples · 2024
Analytical methods
- 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)