Hollybr Lake
Lake County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Hollybr Lake. Here is what has been measured.
- Impaired · Mercury
- Public access
- Limited data
Hollybr Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Phosphorus: 38.6 µg/L.
Hollybr Lake is a lake in Lake County, Florida. Overall water quality is improving 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 2025-04-30. Methodology: how these readings are compared.
What Hollybr Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Hollybr Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Hollybr Lake is safe to swim in today is a call for the Florida Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Hollybr Lake
These are the measurements Florida DEP publishes for Hollybr Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 38.6 µg/L. TSI 57.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 38.6µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 57 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Hollybr Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Hollybr Lake typically sits around 83°F at the surface in September. Usually warmest in Sep (about 83°F) and coldest in Feb (about 60°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (60°F) to its warmest (83°F).
Typical surface water temperature by month, from 14 field readings (2010–2025) via the EPA Water Quality Portal. See the full Hollybr Lake water temperature breakdown →
Recreation & Access
- Lake Holly Public Boat RampPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Hollybr Lake
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Top-rated places to stay near Hollybr Lake
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Fishing Hollybr Lake
Water quality readings over time
3 seasons of samples on record (2021–2025). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Improving-2.27 µg/L/yr3 years
EPA Impairment Status
Hollybr Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL2803A · Official waterbody report
Nearby Lakes in Lake County
Frequently asked questions about Hollybr Lake
Where is Hollybr Lake?
- Hollybr Lake is a lake in Lake County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Hollybr Lake?
- Hollybr Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Phosphorus: 38.6 µg/L.
Is Hollybr Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Hollybr Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
What is the water temperature of Hollybr Lake?
- Hollybr Lake typically sits around 83°F at the surface in September, from 14 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
Are there boat ramps on Hollybr Lake?
- Hollybr Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Holly Public Boat Ramp. Public access is listed as yes.
Can I fish at Hollybr Lake?
- Hollybr Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Florida's fish and wildlife agency, so check its current regulations before you go.
Explore Hollybr Lake across LakeQuality
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Where this data comes from
6 measurements from 1 monitoring station, 2023–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples6 samples · 2023–2025
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory