Lake Sule
Lake Sule in Ogle County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 69 acres.
- Area
- 69 acres
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Why Lake Sule 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 Lake Sule, 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.
Lake Sule is a 69-acre lake in Ogle County, Illinois.
Source: EPA Water Quality Portal sampling records, Illinois EPA, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Lake Sule water quality
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lake Sule
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 Lake Sule
Compare lakeside cabins, hotels, and vacation rentals near Lake Sule in Ogle 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 Lake Sule
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 69 acres |
No bathymetric survey has been published for Lake Sule, so its depth is not documented here.
Recreation & Access
- Lake SulePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Lake Sule
Nearby Lakes in Ogle County
Frequently asked questions about Lake Sule
Where is Lake Sule?
- Lake Sule is a lake in Ogle 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 Lake Sule?
- Lake Sule in Ogle County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 69 acres.
Is Lake Sule safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Sule is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Lake Sule?
- Lake Sule has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Sule.
Explore Lake Sule across LakeQuality
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Where this data comes from
Measurements for Lake Sule come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory