Lake Allen
Lake Allen in Hillsborough County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar.
- Typical in August
- 84°F
- Trend
- ↓ Declining
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Why Lake Allen 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 Lake Allen, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
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.
Lake Allen is a lake in Hillsborough County, Florida. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2024-10-16. Grade methodology: LakeQuality methodology.
Watch Lake Allen 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 Lake Allen
These readings exist but are not enough for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Where to stay near Lake Allen
Compare lakeside cabins, hotels, and vacation rentals near Lake Allen in Hillsborough 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 Lake Allen
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Planning a whole trip? See where to stay at Florida’s top lakes →
Water Temperature
Lake Allen typically sits around 84°F at the surface in August. Summer average is about 80°F. Usually warmest in Aug (about 84°F) and coldest in Feb (about 61°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 52 field readings (2010–2024) via the EPA Water Quality Portal. See the full Lake Allen water temperature breakdown →
Fishing Lake Allen
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.866 m/yr | 6 |
| Phosphorus | → Stable | +0.1 µg/L/yr | 5 |
EPA Impairment Status
Lake Allen is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit FL1463H · Official waterbody report
Graded lakes near Lake Allen
Lake Allen has no grade, but these lakes within a short drive do.
Nearby Lakes in Hillsborough County
Frequently asked questions about Lake Allen
Where is Lake Allen?
- Lake Allen is a lake in Hillsborough 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 Lake Allen?
- Lake Allen in Hillsborough County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar.
Is Lake Allen safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Allen is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
What is the water temperature of Lake Allen?
- Lake Allen typically sits around 84°F at the surface in August, from 52 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
Explore Lake Allen across LakeQuality
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Where this data comes from
2 measurements from 1 monitoring station, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples2 samples · 2024
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