M of Lower Dianne Lake
Leon County, Florida63 acresView mapDirections
Florida DEP publishes the water-quality measurements for M of Lower Dianne Lake. Here is what has been measured.
- Impaired · Impaired biota (cause unknown)
- Limited data
M of Lower Dianne Lake in Leon County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 1.3 ft visibility. Phosphorus: 44 µg/L. Surface area: 63 acres.
M of Lower Dianne Lake is a 63-acre lake in Leon County, Florida. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-06-25. Methodology: how these readings are compared.
Swimming conditions
No readingRecreation use not supported
Based on E. coli testing, M of Lower Dianne Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 10 samples across 3 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 M of Lower Dianne 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 M of Lower Dianne Lake
These are the measurements Florida DEP publishes for M of Lower Dianne 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 1.3 ft of visibility. Phosphorus 44 µg/L. TSI 66.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 44µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| 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. | 66 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about M of Lower Dianne Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
M of Lower Dianne Lake typically sits around 77°F at the surface in October. Summer average is about 89°F. Usually warmest in Aug (about 89°F) and coldest in Feb (about 58°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (58°F) to its warmest (89°F).
Typical surface water temperature by month, from 39 field readings (2014–2025) via the EPA Water Quality Portal. See the full M of Lower Dianne Lake water temperature breakdown →
Lake Details
Surface area
63 acres
No bathymetric survey has been published for M of Lower Dianne Lake, so its depth is not documented here.
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Fishing M of Lower Dianne Lake
Water Quality Trend: Worsening
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Worsening+1 µg/L/yr6 years
Reservoir Info (USACE NID)
M of Lower Dianne Lake is a man-made reservoir impounded by the Lower Lake Dianne Dam (completed 1973), built primarily for recreation on the Tr-Lake Iamonia; earth-type dam, 12 ft tall and 461 ft long.
- Surface area
- 63 ac
- Normal storage
- 405 ac-ft
- Max storage
- 540 ac-ft
- Drainage area
- 0 sq mi
- Hazard class
- Low
- Owner
- GOLDEN EAGLE COUNTRY CLUB
All listed purposes: Recreation;Irrigation.
Source: USACE National Inventory of Dams, NID ID FL00116 · Operator website · Matched by proximity (0.35 km)
EPA Impairment Status
M of Lower Dianne 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, Recreation.
Source: EPA ATTAINS assessment unit FL546A · Official waterbody report
Nearby Lakes in Leon County
Frequently asked questions about M of Lower Dianne Lake
Where is M of Lower Dianne Lake?
- M of Lower Dianne 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 M of Lower Dianne Lake?
- M of Lower Dianne Lake in Leon County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 1.3 ft visibility. Phosphorus: 44 µg/L. Surface area: 63 acres.
Is M of Lower Dianne Lake safe to swim in?
- Based on E. coli testing, M of Lower Dianne Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 10 samples across 3 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 M of Lower Dianne 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 M of Lower Dianne Lake?
- M of Lower Dianne Lake typically sits around 77°F at the surface in October, from 39 EPA Water Quality Portal field readings (2014–2025). That is a typical value for the month, not a live reading.
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Where this data comes from
6 measurements from 1 monitoring station, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples6 samples · 2025
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