Harrisburg Reservoir
Harrisburg Reservoir in Saline County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 158 acres.
- Area
- 158 acres
Next lake in Saline County
Swipe left or right on this bar to open the next or previous lake.
Why Harrisburg Reservoir 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 Harrisburg Reservoir, no water-quality sampling on record for this lake.
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.
Harrisburg Reservoir is a 158-acre lake in Saline County, Illinois.
Source: EPA Water Quality Portal sampling records, Illinois EPA, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Harrisburg Reservoir water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Harrisburg Reservoir
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Harrisburg Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Harrisburg Reservoir in Saline 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.
Top-rated places to stay near Harrisburg Reservoir
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 →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 158 acres |
No bathymetric survey has been published for Harrisburg Reservoir, so its depth is not documented here.
Fishing Harrisburg Reservoir
Nearby Lakes in Saline County
Frequently asked questions about Harrisburg Reservoir
Where is Harrisburg Reservoir?
- Harrisburg Reservoir is a lake in Saline County, Illinois. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Harrisburg Reservoir?
- Harrisburg Reservoir in Saline County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 158 acres.
Is Harrisburg Reservoir safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Harrisburg Reservoir is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Harrisburg Reservoir across LakeQuality
More Illinois Lake Rankings
Other Lakes in Illinois
Where this data comes from
Measurements for Harrisburg Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.