Hernando-Bystre Lake
Hernando-Bystre Lake in Hernando County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar.
- Typical in June
- 83°F
- Trend
- ↓ Declining
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Why Hernando-Bystre 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 Hernando-Bystre 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.
Hernando-Bystre Lake is a lake in Hernando County, Florida. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2020-10-02. Grade methodology: LakeQuality methodology.
Watch Hernando-Bystre Lake 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 Hernando-Bystre 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 Hernando-Bystre Lake
Compare lakeside cabins, hotels, and vacation rentals near Hernando-Bystre Lake in Hernando 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 Hernando-Bystre Lake
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Planning a whole trip? See where to stay at Florida’s top lakes →
Water Temperature
Hernando-Bystre Lake typically sits around 83°F at the surface in June. Summer average is about 83°F. Usually warmest in Jun (about 83°F) and coldest in Dec (about 65°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 16 field readings (2014–2016) via the EPA Water Quality Portal. See the full Hernando-Bystre Lake water temperature breakdown →
Fishing Hernando-Bystre Lake
Water Quality Trend: ↓ Declining
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.8 m/yr | 2 |
| Phosphorus | ↓ Declining | +297 µg/L/yr | 2 |
EPA Impairment Status
Hernando-Bystre Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL1329W · Official waterbody report · Matched by proximity (0.02 km)
Graded lakes near Hernando-Bystre Lake
Hernando-Bystre Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Hernando County
Frequently asked questions about Hernando-Bystre Lake
Where is Hernando-Bystre Lake?
- Hernando-Bystre Lake is a lake in Hernando 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 Hernando-Bystre Lake?
- Hernando-Bystre Lake in Hernando County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar.
Is Hernando-Bystre Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Hernando-Bystre Lake 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 Hernando-Bystre Lake?
- Hernando-Bystre Lake typically sits around 83°F at the surface in June, from 16 EPA Water Quality Portal field readings (2014–2016). That is a typical value for the month, not a live reading.
Explore Hernando-Bystre Lake across LakeQuality
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Where this data comes from
30 measurements from 3 monitoring stations, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX30 samples · 2020
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