Lmac Lake
Volusia County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Lmac Lake. Here is what has been measured.
- Eutrophic
- Impaired · Algal growth
- Public access
Lmac Lake in Volusia County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2.1 ft visibility. Phosphorus: 71.9 µg/L.
Lmac Lake is a productive, nutrient-rich eutrophic lake in Volusia County, Florida. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 29 other monitored lakes in Volusia County, Lmac Lake ranks #21 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-06-10. Methodology: how these readings are compared.
What Lmac Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
Readings onlyRecreation use not supported
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.
Nutrient and algae readings are not a swimming clearance. Lmac Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, impaired biota (cause unknown), mercury, nutrients (phosphorus, nitrogen), salinity / chlorides. Check local advisories before you swim.
Whether Lmac 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 Lmac Lake
These are the measurements Florida DEP publishes for Lmac 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 2.1 ft of visibility. Phosphorus 71.9 µg/L. TSI 66.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 71.9µg/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. | 66 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lmac Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lmac Lake typically sits around 77°F at the surface in October. Summer average is about 85°F. Usually warmest in Aug (about 87°F) and coldest in Jan (about 59°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (59°F) to its warmest (87°F).
Typical surface water temperature by month, from 213 field readings (2010–2025) via the EPA Water Quality Portal. See the full Lmac Lake water temperature breakdown →
Recreation & Access
- Monroe Harbour MarinaPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Lmac Lake
Compare lakeside cabins, hotels, and vacation rentals near Lmac Lake in Volusia 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 Lmac Lake are listed below.
Top-rated places to stay near Lmac Lake
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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 →
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Fishing Lmac Lake
Water Quality Trend: Improving
Based on 6 years of monitoring (2020–2025).
Water clarity
Stable6 years
Phosphorus
Improving-2.07 µg/L/yr6 years
EPA Impairment Status
Lmac 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, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL2893D · Official waterbody report
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Lmac Lake under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger.
- Sanford, City OfSanford · 1.5 mi away · NPDES FLS663255Major
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Volusia County
Frequently asked questions about Lmac Lake
Where is Lmac Lake?
- Lmac Lake is a lake in Volusia County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Lmac Lake?
- Lmac Lake in Volusia County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2.1 ft visibility. Phosphorus: 71.9 µg/L.
Is Lmac Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lmac Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, impaired biota (cause unknown), mercury, nutrients (phosphorus, nitrogen), salinity / chlorides. Check local advisories before you swim.
What is the water temperature of Lmac Lake?
- Lmac Lake typically sits around 77°F at the surface in October, from 213 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
Are there boat ramps on Lmac Lake?
- Lmac Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Monroe Harbour Marina. Public access is listed as yes.
Can I fish at Lmac Lake?
- Lmac Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Florida's fish and wildlife agency, so check its current regulations before you go.
Explore Lmac Lake across LakeQuality
Planning a trip around Canaveral?
Lmac Lake is about 31 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 lakes in Florida
Other Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
318 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- St. Johns River Water Management District
21FLSJWM_WQX318 samples · 2020–2025
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Named boat-access points from the USGS National Boat Ramps inventory