Megginnis Arm Off Crowder Landing Lake
Leon County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Megginnis Arm Off Crowder Landing Lake. Here is what has been measured.
- Hypereutrophic
- Impaired · Mercury
- Limited data
Megginnis Arm Off Crowder Landing Lake in Leon County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 1 ft visibility. Phosphorus: 62.5 µg/L.
Megginnis Arm Off Crowder Landing Lake is a highly nutrient-loaded hypereutrophic lake in Leon County, Florida. 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. Methodology: how these readings are compared.
Swimming conditions
Readings onlyBacteria tested: low
Based on clarity and algae readings from past sampling — there is no 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.
Whether Megginnis Arm Off Crowder Landing Lake is safe to swim in today is a call for the Florida Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Megginnis Arm Off Crowder Landing Lake
These are the measurements Florida DEP publishes for Megginnis Arm Off Crowder Landing Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 1 ft of visibility. Phosphorus 62.5 µg/L. TSI 71.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 62.5µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 71 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Megginnis Arm Off Crowder Landing Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Megginnis Arm Off Crowder Landing Lake typically sits around 75°F at the surface in October. 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.
Column height runs from this lake’s coldest month (54°F) to its warmest (87°F).
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 →
Stays via Stay22
Stays 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 readings cover nutrients and algae, not lodging. Cabins and rentals around Megginnis Arm Off Crowder Landing Lake are listed below.
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Fishing Megginnis Arm Off Crowder Landing Lake
Water Quality Trend: Improving
Based on 6 years of monitoring (2020–2025).
Water clarity
Improving5 years
Phosphorus
Improving-6.76 µg/L/yr6 years
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
Designated uses not supporting: Aquatic life, Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL582B · Official waterbody report
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. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Megginnis Arm Off Crowder Landing Lake?
- Megginnis Arm Off Crowder Landing Lake in Leon County, Florida has water-quality measurements published by Florida DEP, shown here as reported. 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 is a historical summary of past bacteria testing, not a current reading and not a swimming clearance. Bacteria levels can spike quickly after heavy rain, so whether Megginnis Arm Off Crowder Landing Lake is safe to swim in today is a call for Florida's water agency and the county health department; check their current beach 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 75°F at the surface in October, from 69 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
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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)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database