Garden Lake Outflow
Garden Lake Outflow in Seminole County, Florida has a water quality grade of B (Good). Phosphorus: 34 µg/L.
- Typical in August
- 88°F
- Type
- Eutrophic
- Trend
- → Stable
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Garden Lake Outflow is a productive, nutrient-rich eutrophic lake in Seminole County, Florida. Water quality is graded B based on 1 sampling years through 2021. Water clarity is declining over recent sampling years. Compared to the 121 other monitored lakes in Seminole County, Garden Lake Outflow ranks #94 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2021-07-15. Grade methodology: LakeQuality methodology.
Watch Garden Lake Outflow water quality
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Swimming Safety
Grade onlyLimited data
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)
No clarity data. Phosphorus level: 34 µg/L. Trophic State Index: 55.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 34 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Garden Lake Outflow
Compare lakeside cabins, hotels, and vacation rentals near Garden Lake Outflow in Seminole 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 Garden Lake Outflow
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Florida’s top lakes →
Water Temperature
Garden Lake Outflow typically sits around 88°F at the surface in August. Summer average is about 91°F. Usually warmest in Jun (about 95°F) and coldest in Jan (about 64°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 21 field readings (2018–2021) via the EPA Water Quality Portal. See the full Garden Lake Outflow water temperature breakdown →
Fishing Garden Lake Outflow
Water Quality Trend: → Stable
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.484 m/yr | 6 |
| Phosphorus | ↑ Improving | -3.06 µg/L/yr | 6 |
EPA Impairment Status
Garden Lake Outflow 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 FL3009I · Official waterbody report · Matched by proximity (0.37 km)
County Ranking
Ranked #94 of 122 lakes in Seminole County
Nearby Lakes in Seminole County
Frequently asked questions about Garden Lake Outflow
Where is Garden Lake Outflow?
- Garden Lake Outflow is a lake in Seminole County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Garden Lake Outflow?
- Garden Lake Outflow in Seminole County, Florida has a water quality grade of B (Good). Phosphorus: 34 µg/L.
Is Garden Lake Outflow safe to swim in?
- Good for swimming, clear water with low algae levels. Garden Lake Outflow has a water quality grade of B (Good). Always check local health department advisories before swimming.
What is the water temperature of Garden Lake Outflow?
- Garden Lake Outflow typically sits around 88°F at the surface in August, from 21 EPA Water Quality Portal field readings (2018–2021). That is a typical value for the month, not a live reading.
Explore Garden Lake Outflow across LakeQuality
Planning a trip around Canaveral?
Garden Lake Outflow is about 34 miles from Canaveral National Seashore. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Canaveral →More Florida Lake Rankings
Other Grade B Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
8 measurements from 1 monitoring station, 2020–2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples8 samples · 2020–2021
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