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LakeQuality

Perry City Lake

Ralls County, Missouri16 acresView mapDirections

Missouri DNR publishes the water-quality measurements for Perry City Lake. Here is what has been measured.

Phosphorus
240 µg/L
More phosphorus than most
Measured by Missouri DNR
Water temp
~79°F
Typical for Aug · EPA WQP
Max depth
~35 ft est.
GLOBathy model
Area
16 acres
Surface area
  • Impaired · Algal growth
  • 35 ft max depth
  • Public access
  • Limited data

Perry City Lake in Ralls County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Phosphorus: 240 µg/L. Surface area: 16 acres.

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Perry City Lake is a 16-acre lake in Ralls County, Missouri with an estimated average depth of about 35 feet. Limited fish-species data available. Public access is available.

Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2025-07-28. Methodology: how these readings are compared.

Perry City Lake covers about 16 acres in Ralls County. Vrbo is where to look for cabins and lake homes around Perry City Lake, and Booking.com and Expedia search hotels near the lake for your dates.

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Perry City Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.

Whether Perry 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.

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Water quality measurements for Perry City Lake

These are the measurements Missouri DNR publishes for Perry 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. Phosphorus 240 µg/L. TSI 83.

Water quality readings
MeasureReadingWhere it sits
Water clarity (Secchi depth)No reading

How deep a black-and-white disk stays visible from the surface. Higher is clearer.

Total phosphorus240µg/LMeasured, not scored

The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.

Chlorophyll-a (algae)No reading

The green pigment in algae — a direct measure of how much algae is in the water.

Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a.83Hypereutrophic
OligotrophicMesotrophicEutrophicHypereutrophic

Very high nutrients, dense algae, poor clarity

Ask about Perry City Lake

Answers come straight from the public measurements and survey records on this page.

Water Temperature

Perry City Lake typically sits around 79°F at the surface in August. Summer average is about 83°F. Usually warmest in Jul (about 87°F) and coldest in May (about 76°F). These are typical values by month — not a live reading.

Jan
Feb
Mar
Apr
76°
May
82°
Jun
87°
Jul
79°
Aug
Sep
Oct
Nov
Dec

Column height runs from this lake’s coldest month (76°F) to its warmest (87°F).

Typical surface water temperature by month, from 20 field readings (2013–2024) via the EPA Water Quality Portal. See the full Perry City Lake water temperature breakdown →

Lake Details

Max depth

~35 ft est.

Surface area

16 acres

Public access

Yes

Listed by Missouri DNR

Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Missouri has not published bathymetry for Perry City Lake.

Lake Size & Watershed

Watershed (drainage) area

3 sq mi

HydroLAKES / HydroSHEDS

Shoreline

1 mi

HydroLAKES / HydroSHEDS

Elevation

686 ft

Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.

Stays via Stay22

Stays near Perry City Lake

Compare lakeside cabins, hotels, and vacation rentals near Perry City Lake in Ralls 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 Perry City Lake

Prices for Oct 30–Nov 1, 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.

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Fishing Perry City Lake

Reservoir Info (USACE NID)

Perry City Lake is a man-made reservoir impounded by the Perry City Dam - Lower (completed 1964), built primarily for water supply on the MACE BRANCH LICK CREEK; earth-type dam, 26 ft tall.

Surface area
16 ac
Normal storage
61 ac-ft
Max storage
223 ac-ft
Drainage area
1,583 sq mi
Hazard class
High
Owner
CITY OF PERRY

Source: USACE National Inventory of Dams, NID ID MO10675 · Operator website · Matched by proximity (0.11 km)

EPA Impairment Status

Perry 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

Algal growth

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit MO_7047.00 · Official waterbody report

Regulated Pollution Sources Nearby

3 EPA-permitted facilities operate within about 5 miles of Perry City Lake under Clean Water Act (NPDES) discharge permits. 2 facilities have a reported Clean Water Act violation in the past three years.

  • Perry Wwtf
    Perry · 0.9 mi away · NPDES MO0111821
    Recent violation
  • Land 4 Boats Wwtf
    Perry · 2.2 mi away · NPDES MO0123846
    Recent violation
  • Riedel Energy Inc
    Perry · 2.3 mi away · NPDES MO0099848

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 Ralls County

Frequently asked questions about Perry City Lake

Where is Perry City Lake?

Perry City Lake is a lake in Ralls County, Missouri. Its water-quality measurements are published by Missouri DNR and shown on this page as reported.

What is the water quality of Perry City Lake?

Perry City Lake in Ralls County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Phosphorus: 240 µg/L. Surface area: 16 acres.

Measurements on this page ↑

Is Perry City Lake safe to swim in?

Nutrient and algae readings are not a swimming clearance. Perry City Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.

Swimming on this page ↑

What is the water temperature of Perry City Lake?

Perry City Lake typically sits around 79°F at the surface in August, from 20 EPA Water Quality Portal field readings (2013–2024). That is a typical value for the month, not a live reading.

Temp on this page ↑

How deep is Perry City Lake?

No published bathymetric survey covers Perry City Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 35 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 16 acres.

Can I fish at Perry City Lake?

Public access to Perry City Lake is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Missouri's fish and wildlife agency, so check its current regulations before you go.

Where this data comes from

1 measurement from 1 monitoring station, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.

Collected and reported by

  • Missouri Dept. of Natural ResourcesMDNR1 sample · 2025

Analytical methods

  • Nitrogen and Phosphorus, Total, Whole-water, Alkaline Persulfate Digest
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)

Lake size & watershed from HydroLAKES (HydroSHEDS)