Port Perry Lake
Perry County, Missouri187 acresView mapDirections
Missouri DNR publishes the water-quality measurements for Port Perry Lake. Here is what has been measured.
- Mesotrophic
- Limited data
Port Perry Lake in Perry County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Water clarity: 12 ft visibility. Phosphorus: 8.3 µg/L. Chlorophyll-a (algae): 2.1 µg/L. Surface area: 187 acres.
Port Perry Lake is a 187-acre mesotrophic lake in Perry County, Missouri. Compared to the 2 other monitored lakes in Perry County, Port Perry Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-09-17. Methodology: how these readings are compared.
What Port Perry Lake is good for
From access and monitoring records, not editorial picks.
- Clear water12 ft of visibility
Swimming conditions
Readings onlyLimited data
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. Check local advisories before you swim.
Whether Port Perry 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 Port Perry Lake
These are the measurements Missouri DNR publishes for Port Perry Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 12 ft. Phosphorus 8.3 µg/L. Chlorophyll-a 2.1 µg/L. TSI 38.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 12ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 8.3µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 2.1µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 38 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Port Perry Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
187 acres
No bathymetric survey has been published for Port Perry Lake, so its depth is not documented here.
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Fishing Port Perry Lake
Reservoir Info (USACE NID)
Port Perry Lake is a man-made reservoir impounded by the Port Perry Dam (completed 1973), built primarily for recreation on the TR NATIONS CREEK; earth-type dam, 70 ft tall and 900 ft long.
- Surface area
- 187 ac
- Normal storage
- 828 ac-ft
- Max storage
- 6,506 ac-ft
- Drainage area
- 3.11 sq mi
- Hazard class
- High
Source: USACE National Inventory of Dams, NID ID MO30030 · Operator website
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Port Perry Lake under Clean Water Act (NPDES) discharge permits. 2 facilities have a reported Clean Water Act violation in the past three years.
- Port Perry Service CoPerryville · 0.1 mi away · NPDES MO0116998Recent violation
- Confluence Rivers - Port Perry WwtfPerryville · 0.1 mi away · NPDES MO0139611Recent violation
- Sugar Camp Energy LlcJohnston City · 4.4 mi away · NPDES IL0079472
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 Perry County
Frequently asked questions about Port Perry Lake
Where is Port Perry Lake?
- Port Perry Lake is a lake in Perry County, Missouri. Its water-quality measurements are published by Missouri DNR and shown on this page as reported.
What is the water quality of Port Perry Lake?
- Port Perry Lake in Perry County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Water clarity: 12 ft visibility. Phosphorus: 8.3 µg/L. Chlorophyll-a (algae): 2.1 µg/L. Surface area: 187 acres.
Is Port Perry Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Port Perry Lake across LakeQuality
More lakes in Missouri
Other Lakes in Missouri
Mesotrophic Lakes in Missouri
Where this data comes from
21 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
UMC21 samples · 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
Regulated discharger data from EPA ECHO (ICIS-NPDES)