Megginnis Arm Off Crowder Landing Lake
Megginnis Arm Off Crowder Landing Lake in Leon County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 1 ft visibility. Phosphorus: 62.5 µg/L.
- Clarity
- 1 ft
- Typical in August
- 87°F
- Type
- Hypereutrophic
- Trend
- ↑ Improving
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Megginnis Arm Off Crowder Landing Lake →
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Megginnis Arm Off Crowder Landing Lake is a highly nutrient-loaded hypereutrophic lake in Leon County, Florida. Water quality is graded D based on 1 sampling years through 2022. Overall water quality is improving over recent sampling years. Compared to the 58 other monitored lakes in Leon County, Megginnis Arm Off Crowder Landing Lake ranks #50 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2022-05-09. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyBacteria A
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.
Based on E. coli testing, Megginnis Arm Off Crowder Landing Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 35 samples across 6 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Florida’s current beach and health-department advisories before swimming.
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 1 ft of visibility. Phosphorus level: 62.5 µg/L. Trophic State Index: 71.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1 ft | Not graded |
| Phosphorus | 62.5 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 71 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Megginnis Arm Off Crowder Landing Lake
Compare lakeside cabins, hotels, and vacation rentals near Megginnis Arm Off Crowder Landing Lake in Leon 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Megginnis Arm Off Crowder Landing Lake are listed below.
Top-rated places to stay near Megginnis Arm Off Crowder Landing Lake
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Water Temperature
Megginnis Arm Off Crowder Landing Lake typically sits around 87°F at the surface in August. Summer average is about 86°F. Usually warmest in Jul (about 87°F) and coldest in Jan (about 54°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 69 field readings (2010–2024) via the EPA Water Quality Portal. See the full Megginnis Arm Off Crowder Landing Lake water temperature breakdown →
Fishing Megginnis Arm Off Crowder Landing Lake
Water Quality Trend: ↑ Improving
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.058 m/yr | 5 |
| Phosphorus | ↑ Improving | -6.76 µg/L/yr | 6 |
EPA Impairment Status
Megginnis Arm Off Crowder Landing 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 FL746A · Official waterbody report · Matched by proximity (2.68 km)
County Ranking
Ranked #50 of 59 lakes in Leon County
Nearby Lakes in Leon County
Frequently asked questions about Megginnis Arm Off Crowder Landing Lake
Where is Megginnis Arm Off Crowder Landing Lake?
- Megginnis Arm Off Crowder Landing Lake is a lake in Leon County, Florida. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Megginnis Arm Off Crowder Landing Lake?
- Megginnis Arm Off Crowder Landing Lake in Leon County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 1 ft visibility. Phosphorus: 62.5 µg/L.
Is Megginnis Arm Off Crowder Landing Lake safe to swim in?
- Based on E. coli testing, Megginnis Arm Off Crowder Landing Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 35 samples across 6 seasons. That works out to a bacteria swim-safety grade of A — a historical summary of past testing, not a current reading. Megginnis Arm Off Crowder Landing Lake has a water quality grade of D (Nutrient-rich). Bacteria levels can spike quickly after heavy rain, so always check Florida's current beach and health-department advisories before you swim.
What is the water temperature of Megginnis Arm Off Crowder Landing Lake?
- Megginnis Arm Off Crowder Landing Lake typically sits around 87°F at the surface in August, from 69 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
Explore Megginnis Arm Off Crowder Landing Lake across LakeQuality
More Florida Lake Rankings
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Where this data comes from
39 measurements from 1 monitoring station, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples39 samples · 2020–2022
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