Bay-Lullwater Lake
Bay-Lullwater Lake in Bay County, Florida has a water quality grade of B (Good). Water clarity: 5 ft visibility. Phosphorus: 29 µg/L.
- Clarity
- 5 ft
- Typical in August
- 85°F
- Type
- Eutrophic
- Trend
- ↓ Declining
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Bay-Lullwater Lake is a productive, nutrient-rich eutrophic lake in Bay County, Florida. Water quality is graded B based on 1 sampling years through 2025. Overall water quality is declining over recent sampling years. Compared to the 4 other monitored lakes in Bay County, Bay-Lullwater Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-06-30. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLow algae
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Murky, only visible to about 5 ft. Phosphorus level: 29 µg/L. Trophic State Index: 53.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5 ft | Not graded |
| Phosphorus | 29 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Bay-Lullwater Lake
Compare lakeside cabins, hotels, and vacation rentals near Bay-Lullwater Lake in Bay 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 Bay-Lullwater Lake
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Water Temperature
Bay-Lullwater Lake typically sits around 85°F at the surface in August. Summer average is about 85°F. Usually warmest in Jun (about 85°F) and coldest in Jan (about 56°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 106 field readings (2020–2025) via the EPA Water Quality Portal. See the full Bay-Lullwater Lake water temperature breakdown →
Fishing Bay-Lullwater Lake
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.209 m/yr | 6 |
| Phosphorus | ↓ Declining | +1.85 µg/L/yr | 5 |
County Ranking
Ranked #4 of 5 lakes in Bay County
Nearby Lakes in Bay County
Frequently asked questions about Bay-Lullwater Lake
Where is Bay-Lullwater Lake?
- Bay-Lullwater Lake is a lake in Bay County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Bay-Lullwater Lake?
- Bay-Lullwater Lake in Bay County, Florida has a water quality grade of B (Good). Water clarity: 5 ft visibility. Phosphorus: 29 µg/L.
Is Bay-Lullwater Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Bay-Lullwater Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
What is the water temperature of Bay-Lullwater Lake?
- Bay-Lullwater Lake typically sits around 85°F at the surface in August, from 106 EPA Water Quality Portal field readings (2020–2025). That is a typical value for the month, not a live reading.
Explore Bay-Lullwater Lake across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
437 measurements from 6 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX282 samples · 2020–2024 - Submitting organization not recorded for these samples155 samples · 2020–2025
Some records reached the portal without a submitting organization. Those samples are counted above but not attributed.
Monitoring station identifiers (6)
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.