Blackctr Lake
Pasco County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Blackctr Lake. Here is what has been measured.
- Eutrophic
- Impaired · Algal growth
- Limited data
Blackctr Lake in Pasco County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 3.1 ft visibility. Phosphorus: 32 µg/L.
Blackctr Lake is a productive, nutrient-rich eutrophic lake in Pasco County, Florida. Overall water quality is improving over recent sampling years. Compared to the 14 other monitored lakes in Pasco County, Blackctr Lake ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-06-17. Methodology: how these readings are compared.
Swimming conditions
Readings onlyRecreation use not supported
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Blackctr Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, oxygen depletion (low DO). Check local advisories before you swim.
Whether Blackctr 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 Blackctr Lake
These are the measurements Florida DEP publishes for Blackctr Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 3.1 ft of visibility. Phosphorus 32 µg/L. TSI 57.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 32µg/L | Good GoodFairPoor |
| 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 Blackctr Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Blackctr Lake typically sits around 70°F at the surface in October. Summer average is about 83°F. Usually warmest in Sep (about 86°F) and coldest in Jan (about 59°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (59°F) to its warmest (86°F).
Typical surface water temperature by month, from 68 field readings (2010–2025) via the EPA Water Quality Portal. See the full Blackctr Lake water temperature breakdown →
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Stays near Blackctr Lake
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Fishing Blackctr Lake
Water quality readings over time
3 seasons of samples on record (2022–2025). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving3 years
Phosphorus
Improving-1.07 µg/L/yr3 years
EPA Impairment Status
Blackctr Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Recreation.
Source: EPA ATTAINS assessment unit FL1464A · Official waterbody report
Nearby Lakes in Pasco County
Frequently asked questions about Blackctr Lake
Where is Blackctr Lake?
- Blackctr Lake is a lake in Pasco County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Blackctr Lake?
- Blackctr Lake in Pasco County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 3.1 ft visibility. Phosphorus: 32 µg/L.
Is Blackctr Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Blackctr Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, oxygen depletion (low DO). Check local advisories before you swim.
What is the water temperature of Blackctr Lake?
- Blackctr Lake typically sits around 70°F at the surface in October, from 68 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
Explore Blackctr Lake across LakeQuality
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Where this data comes from
17 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 samples17 samples · 2024–2025
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