Vienna Correctional Center Lake
Johnson County, Illinois74 acresView mapDirections
Illinois EPA publishes the water-quality measurements for Vienna Correctional Center Lake. Here is what has been measured.
- Eutrophic
- 23 ft max depth
- Limited data
Vienna Correctional Center Lake in Johnson County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Water clarity: 4.5 ft visibility. Phosphorus: 22 µg/L. Chlorophyll-a (algae): 26.2 µg/L. Surface area: 74 acres.
Vienna Correctional Center Lake is a 74-acre productive, nutrient-rich eutrophic lake in Johnson County, Illinois with an estimated average depth of about 23 feet. Compared to the 1 other monitored lakes in Johnson County, Vienna Correctional Center Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Illinois EPA, last sampled 2020-11-05. Methodology: how these readings are compared.
Vienna Correctional Center Lake covers about 74 acres in Johnson County. If you are planning to stay, you can search lake houses and cabins around Vienna Correctional Center Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
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 Vienna Correctional Center Lake is safe to swim in today is a call for the Illinois Environmental Protection Agency and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Vienna Correctional Center Lake
These are the measurements Illinois EPA publishes for Vienna Correctional Center Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 4.5 ft. Phosphorus 22 µg/L. Chlorophyll-a 26.2 µg/L. TSI 56.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 22µg/L | Fair GoodFairPoor |
| Chlorophyll-a (algae) | 26.2µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 56 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Vienna Correctional Center Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Vienna Correctional Center Lake typically sits around 63°F at the surface in October. Summer average is about 77°F. Usually warmest in Aug (about 79°F) and coldest in Dec (about 48°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (48°F) to its warmest (79°F).
Typical surface water temperature by month, from 361 field readings (2010–2022) via the EPA Water Quality Portal. See the full Vienna Correctional Center Lake water temperature breakdown →
Lake Details
Max depth
~23 ft est.
Surface area
74 acres
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Illinois has not published bathymetry for Vienna Correctional Center Lake.
Lake Size & Watershed
Watershed (drainage) area
111 sq mi
HydroLAKES / HydroSHEDS
Shoreline
2 mi
HydroLAKES / HydroSHEDS
Elevation
384 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 Vienna Correctional Center Lake
Compare lakeside cabins, hotels, and vacation rentals near Vienna Correctional Center Lake in Johnson County, Illinois — 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 readings cover nutrients and algae, not lodging. Cabins and rentals around Vienna Correctional Center Lake are listed below.
Top-rated places to stay near Vienna Correctional Center Lake
Prices for Oct 23–25, 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 Illinois’s top lakes →
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Fishing Vienna Correctional Center Lake
Reservoir Info (USACE NID)
Vienna Correctional Center Lake is a man-made reservoir impounded by the Vienna Correctional Center Lake Dam (completed 1964), built primarily for recreation on the TRIB BAY CREEK; earth-type dam, 29 ft tall and 680 ft long.
- Surface area
- 74 ac
- Normal storage
- 558 ac-ft
- Max storage
- 1,169 ac-ft
- Drainage area
- 1.5 sq mi
- Hazard class
- Low
- Owner
- ILLINOIS DEPARTMENT OF CORRECTIONS
All listed purposes: Recreation;Water Supply.
Source: USACE National Inventory of Dams, NID ID IL00028 · Operator website
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Vienna Correctional Center Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Vienna Correctional Center StpVienna · 0.3 mi away · NPDES IL0036757Recent violation
- Patrician Of Vienna Inc StpVienna · 3.2 mi away · NPDES IL0053660
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 Johnson County
Frequently asked questions about Vienna Correctional Center Lake
Where is Vienna Correctional Center Lake?
- Vienna Correctional Center Lake is a lake in Johnson County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Vienna Correctional Center Lake?
- Vienna Correctional Center Lake in Johnson County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Water clarity: 4.5 ft visibility. Phosphorus: 22 µg/L. Chlorophyll-a (algae): 26.2 µg/L. Surface area: 74 acres.
Is Vienna Correctional Center Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Vienna Correctional Center Lake?
- Vienna Correctional Center Lake typically sits around 63°F at the surface in October, from 361 EPA Water Quality Portal field readings (2010–2022). That is a typical value for the month, not a live reading.
How deep is Vienna Correctional Center Lake?
- No published bathymetric survey covers Vienna Correctional Center Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 23 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 74 acres.
Explore Vienna Correctional Center Lake across LakeQuality
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Where this data comes from
56 measurements from 3 monitoring stations, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- illinois epa
IL_EPA_WQX56 samples · 2020
Analytical methods
- MEASURED IN FIELD
- Phosphorus by Colorimetry
- 10200 H 2 ~ Chlorophyll a-b-c Determination by spectrophotometer
Monitoring station identifiers (3)
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)
Lake size & watershed from HydroLAKES (HydroSHEDS)