Jackson Park East Lagoon Lake
Cook County, IllinoisView 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 · Nutrients (phosphorus, nitrogen)
- Limited data
Jackson Park East Lagoon Lake in Cook County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar.
- Typical in August
- 78°F
- Trend
- ↑ Improving
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Watch Jackson Park East Lagoon Lake’s letter
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Why Jackson Park East Lagoon 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 Jackson Park East Lagoon 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 Illinois EPA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Jackson Park East Lagoon Lake is a lake in Cook County, Illinois. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, Illinois EPA, last sampled 2023-05-04. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Jackson Park East Lagoon Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Water quality measurements for Jackson Park East Lagoon 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
Jackson Park East Lagoon Lake typically sits around 78°F at the surface in August. Summer average is about 78°F. Usually warmest in Jun (about 78°F) and coldest in Oct (about 56°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 21 field readings (2014–2023) via the EPA Water Quality Portal. See the full Jackson Park East Lagoon Lake water temperature breakdown →
Fishing Jackson Park East Lagoon Lake
Water Quality Trend: ↑ Improving
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↑ Improving | -1 µg/L/yr | 3 |
| Chlorophyll-a | ↑ Improving | -0.6 µg/L/yr | 2 |
EPA Impairment Status
Jackson Park East Lagoon Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit IL_QZE · Official waterbody report · Matched by proximity (0.07 km)
Nearby Lakes in Cook County
Frequently asked questions about Jackson Park East Lagoon Lake
Where is Jackson Park East Lagoon Lake?
- Jackson Park East Lagoon Lake is a lake in Cook County, Illinois. 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 Jackson Park East Lagoon Lake?
- Jackson Park East Lagoon Lake in Cook County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar.
Is Jackson Park East Lagoon Lake safe to swim in?
- The letter is not a swimming clearance. Jackson Park East Lagoon Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
What is the water temperature of Jackson Park East Lagoon Lake?
- Jackson Park East Lagoon Lake typically sits around 78°F at the surface in August, from 21 EPA Water Quality Portal field readings (2014–2023). That is a typical value for the month, not a live reading.
Explore Jackson Park East Lagoon Lake across LakeQuality
Planning a trip around Indiana Dunes?
Jackson Park East Lagoon Lake is about 27 miles from Indiana Dunes National Park. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Indiana Dunes →More Illinois Lake Rankings
Other Lakes in Illinois
Where this data comes from
1 measurement from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS Illinois Water Science Center
USGS-IL1 sample · 2023
Analytical methods
- Secchi disk method
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