Jamesport City Lake
Daviess County, Missouri22 acresView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Impaired · Algal growth
- Limited data
Jamesport City Lake in Daviess County, Missouri is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 22 acres.
- Typical in July
- 80°F
- Area
- 22 acres
Stays via Stay22
Stays near Jamesport City Lake
Compare lakeside cabins, hotels, and vacation rentals near Jamesport City 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.
Top-rated places to stay near Jamesport City Lake
Prices for Sep 11–13, 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 whole trip? See where to stay at Missouri’s top lakes →
Watch Jamesport City Lake’s letter
Email me if this lake’s grade moves. Grades stay free.
Or email
Why Jamesport City Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Jamesport City Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by Missouri DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
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. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is 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.
Water quality measurements for Jamesport City Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
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.
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
| Characteristic | Value |
|---|---|
| Surface Area | 22 acres |
No bathymetric survey has been published for Jamesport City Lake, so its depth is not documented here.
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
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.
Graded lakes near Jamesport City Lake
Jamesport City Lake has no grade, but these lakes within a short drive do.
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. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Jamesport City Lake?
- Jamesport City Lake in Daviess County, Missouri is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 22 acres.
Is Jamesport City Lake safe to swim in?
- The letter is 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.
Explore Jamesport City Lake across LakeQuality
More Missouri Lake Rankings
Other Lakes in Missouri
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)
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)