Harrisnwsh Lake
Harrisnwsh Lake in Lake County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 2.6 ft visibility. Phosphorus: 67.3 µg/L.
- Clarity
- 2.6 ft
- Trend
- → Stable
- Public access
- Yes
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Why Harrisnwsh 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 Harrisnwsh 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.
Harrisnwsh Lake is a lake in Lake County, Florida. Water clarity 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 2023-12-26. Grade methodology: LakeQuality methodology.
Watch Harrisnwsh Lake water quality
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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 Harrisnwsh Lake
These readings exist but are not enough for an A–F grade — see why.
Very murky, less than 2.6 ft of visibility. Phosphorus level: 67.3 µg/L. Trophic State Index: 64.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.6 ft | Not graded |
| Phosphorus | 67.3 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 64 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Harrisnwsh Lake
Compare lakeside cabins, hotels, and vacation rentals near Harrisnwsh 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 Harrisnwsh Lake
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Planning a trip? Cabins and lodging at Harrisnwsh Lake → · more Florida lake trips
Recreation & Access
- Venetian Gardens Public Boat RampPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Harrisnwsh Lake
Water Quality Trend: → Stable
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.035 m/yr | 4 |
| Phosphorus | ↑ Improving | -2.5 µg/L/yr | 4 |
Graded lakes near Harrisnwsh Lake
Harrisnwsh Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Lake County
Frequently asked questions about Harrisnwsh Lake
Where is Harrisnwsh Lake?
- Harrisnwsh 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 Harrisnwsh Lake?
- Harrisnwsh Lake in Lake County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 2.6 ft visibility. Phosphorus: 67.3 µg/L.
Is Harrisnwsh Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Harrisnwsh 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 Harrisnwsh Lake?
- Harrisnwsh Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Venetian Gardens Public Boat Ramp. Public access is listed as yes.
Explore Harrisnwsh Lake across LakeQuality
More Florida Lake Rankings
Other Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
4 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 samples4 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
Named boat-access points from the USGS National Boat Ramps inventory