Herlong Park Lake
Herlong Park Lake in Lake County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3.3 ft visibility. Phosphorus: 219 µg/L.
- Clarity
- 3.3 ft
- Trend
- ↓ Declining
- Public access
- Yes
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Why Herlong Park 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 Herlong Park Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity and phosphorus, but not algae (chlorophyll-a).
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 FDEP and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Herlong Park Lake is a lake in Lake County, Florida. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2023-08-17. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Herlong Park Lake
These readings exist but are not enough for an A–F grade — see why.
Very murky, less than 3.3 ft of visibility. Phosphorus level: 219 µg/L. Trophic State Index: 71.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.3 ft | Not graded |
| Phosphorus | 219 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 71 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Herlong Park Lake
Compare lakeside cabins, hotels, and vacation rentals near Herlong Park Lake in Lake County, Florida — 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 Herlong Park Lake
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Recreation & Access
- Herlong Park Public Boat RampPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Herlong Park Lake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.23 m/yr | 5 |
| Phosphorus | ↓ Declining | +3 µg/L/yr | 5 |
EPA Impairment Status
Herlong Park Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit FL2829A · Official waterbody report · Matched by proximity (1.79 km)
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Herlong Park Lake under Clean Water Act (NPDES) discharge permits.
- Leesburg, City Of - Canal Street WwtfLeesburg · 0.3 mi away · NPDES FL0105066
- Cutrale Citrus SprayfieldLeesburg · 0.4 mi away · NPDES FL0105619
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.
Graded lakes near Herlong Park Lake
Herlong Park Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Lake County
Frequently asked questions about Herlong Park Lake
Where is Herlong Park Lake?
- Herlong Park Lake is a lake in Lake County, Florida. 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 Herlong Park Lake?
- Herlong Park Lake in Lake County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3.3 ft visibility. Phosphorus: 219 µg/L.
Is Herlong Park Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Herlong Park Lake 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 Herlong Park Lake?
- Herlong Park Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Herlong Park Public Boat Ramp. Public access is listed as yes.
Explore Herlong Park Lake across LakeQuality
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Other Lakes in Florida
Hypereutrophic Lakes in Florida
Where this data comes from
2 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples2 samples · 2023
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Named boat-access points from the USGS National Boat Ramps inventory