Hillsborough-Simmons Lake
Hillsborough-Simmons Lake in Hillsborough County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 25 acres.
- Area
- 25 acres
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Why Hillsborough-Simmons Lake 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 Hillsborough-Simmons Lake, 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.
Hillsborough-Simmons Lake is a 25-acre lake in Hillsborough County, Florida.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-04-28. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedBacteria advisory
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Hillsborough-Simmons Lake
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 Hillsborough-Simmons Lake
Compare lakeside cabins, hotels, and vacation rentals near Hillsborough-Simmons Lake 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 Hillsborough-Simmons Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 25 acres |
No bathymetric survey has been published for Hillsborough-Simmons Lake, so its depth is not documented here.
Fishing Hillsborough-Simmons Lake
Reservoir Info (USACE NID)
Hillsborough-Simmons Lake is a man-made reservoir impounded by the Simmons Lake, built primarily for recreation on the Cypress Creek; earth-type dam, 10 ft tall and 95 ft long.
- Surface area
- 25 ac
- Normal storage
- 58 ac-ft
- Max storage
- 119 ac-ft
- Hazard class
- Significant
- Owner
- HILLSBOROUGH COUNTY
Source: USACE National Inventory of Dams, NID ID FL12040 · Operator website · Matched by proximity (0.33 km)
EPA Impairment Status
Hillsborough-Simmons Lake 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 FL1739 · Official waterbody report · Matched by proximity (0.78 km)
Graded lakes near Hillsborough-Simmons Lake
Hillsborough-Simmons Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Hillsborough County
Frequently asked questions about Hillsborough-Simmons Lake
Where is Hillsborough-Simmons Lake?
- Hillsborough-Simmons Lake 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 Hillsborough-Simmons Lake?
- Hillsborough-Simmons Lake in Hillsborough County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 25 acres.
Is Hillsborough-Simmons Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Hillsborough-Simmons Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Hillsborough-Simmons Lake across LakeQuality
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Where this data comes from
3 measurements from 3 monitoring stations, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX3 samples · 2025
Monitoring station identifiers (3)
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