Miccref Lake
Jefferson County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Miccref Lake. Here is what has been measured.
- Impaired · Mercury
- Limited data
Miccref Lake in Jefferson County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Phosphorus: 26 µg/L.
Miccref Lake is a lake in Jefferson County, Florida. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2021-09-23. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Miccref Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, oxygen depletion (low DO), pH / acidity. Check local advisories before you swim.
Whether Miccref 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 Miccref Lake
These are the measurements Florida DEP publishes for Miccref 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 26 µg/L. TSI 51.
| 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 | 26µg/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. | 51 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Answers come straight from the public measurements and survey records on this page.
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Fishing Miccref Lake
Water Quality Trend: Worsening
Based on 4 years of monitoring (2021–2024).
Phosphorus
Worsening+13.75 µg/L/yr4 years
EPA Impairment Status
Miccref 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: Aquatic life, Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL791N · Official waterbody report
Nearby Lakes in Jefferson County
Frequently asked questions about Miccref Lake
Where is Miccref Lake?
- Miccref Lake is a lake in Jefferson County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Miccref Lake?
- Miccref Lake in Jefferson County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Phosphorus: 26 µg/L.
Is Miccref Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Miccref Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, oxygen depletion (low DO), pH / acidity. Check local advisories before you swim.
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Where this data comes from
1 measurement from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples1 sample · 2021
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