Churchsh Lake
Churchsh Lake in Lake County, Florida has a water quality grade of B (Good). Water clarity: 6.1 ft visibility. Phosphorus: 18 µg/L.
- Clarity
- 6.1 ft
- Max depth
- ~14 ft est.
- Type
- Mesotrophic
- Trend
- → Stable
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Churchsh Lake is a mesotrophic lake in Lake County, Florida with an estimated average depth of about 14 feet. Water quality is graded B based on 1 sampling years through 2025. Water clarity is improving over recent sampling years. Compared to the 127 other monitored lakes in Lake County, Churchsh Lake ranks #93 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-07-29. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyBacteria D
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Based on E. coli testing, Churchsh Lake frequently exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 11.1% of 9 samples across 2 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Florida’s current beach and health-department advisories before swimming.
Water Quality Grade: B (Good)
Murky, only visible to about 6.1 ft. Phosphorus level: 18 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.1 ft | Not graded |
| Phosphorus | 18 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Churchsh Lake
Compare lakeside cabins, hotels, and vacation rentals near Churchsh 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 Churchsh Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~14 ft est. |
| Average Depth | ~9 ft est. |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Florida has not published bathymetry for Churchsh Lake.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Fishing Churchsh Lake
Water Quality Trend: → Stable
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.264 m/yr | 3 |
| Phosphorus | ↓ Declining | +4.45 µg/L/yr | 3 |
EPA Impairment Status
Churchsh Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL2839 · Official waterbody report · Matched by proximity (2.06 km)
County Ranking
Ranked #93 of 128 lakes in Lake County
Nearby Lakes in Lake County
Frequently asked questions about Churchsh Lake
Where is Churchsh Lake?
- Churchsh Lake is a lake in Lake County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Churchsh Lake?
- Churchsh Lake in Lake County, Florida has a water quality grade of B (Good). Water clarity: 6.1 ft visibility. Phosphorus: 18 µg/L.
Is Churchsh Lake safe to swim in?
- Based on E. coli testing, Churchsh Lake frequently exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 11.1% of 9 samples across 2 seasons. That works out to a bacteria swim-safety grade of D — a historical summary of past testing, not a current reading. Churchsh Lake has a water quality grade of B (Good). Bacteria levels can spike quickly after heavy rain, so always check Florida's current beach and health-department advisories before you swim.
How deep is Churchsh Lake?
- No published bathymetric survey covers Churchsh Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 14 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Churchsh Lake across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Mesotrophic Lakes in Florida
Where this data comes from
19 measurements from 1 monitoring station, 2024–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples19 samples · 2024–2025
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
Lake size & watershed from HydroLAKES (HydroSHEDS)