Lake Marion: depth, boat ramps and water quality
Boat: 2 ramps and launches on file for this water.
Start here: Launch at Lake Marion Public Boat Ramp, 1 lane, concrete.
The lake
Lake Marion covers 3,021 acres in Florida, across Polk County. It is a lake: 92.6% of it is 6 feet deep or less; the deepest point measured is at least 9 feet (2.7 m). Our records hold 17 species for this water.
Depth and bottom
Deepest measured point: at least 9 ft (2.7 m). That is the deepest contour line: the bottom goes deeper. 92.6% of the water is 6 feet or shallower. We hold 47 depth contour lines for this water.
- 0–2 ft: 9.6% of the water
- 2–3 ft: 10.1% of the water
- 3–4 ft: 20.1% of the water
- 4–5 ft: 34.4% of the water
- 5–6 ft: 18.4% of the water
- 6–7 ft: 5.2% of the water
- 7–9 ft: 2.2% of the water
Water and conditions
Water clarity runs 1.1–2.1 feet on our readings, averaging 1.6 feet, from 43 readings. Our water temperature readings average 78°F; they do not cover the whole year, so this is not a yearly average. The coldest single reading we hold is 60°F and the warmest is 90°F; the warmest monthly average is 86°F. pH averages 8.1. These readings span 2016–2025.
2 ramps and launches on this water
On this water we hold 2 trailer ramps.
- Bannon Fish Camp — 1 lane, concrete, paid, portable restrooms, dock. Haines City. 7970 Bannon Fish Camp Rd, Haines City 33844
- Lake Marion Public Boat Ramp — 1 lane, concrete, parking for 3 trailers (paved), no fee. Haines City, Polk County. Jim Edwards Road, Haines City 33844 · website polk-county.net/parks-and-recreation/facilities/-in-category/categories/pr-amenities/boat-launching-site
Only one of the 2 places listed has both a fee and opening hours on file: a blank means we hold no such field, not that it is free or always open, and this list may not be complete.
What is hard here
With 92.6% of the water 6 feet or less, low level turns the flats into hazards. Only 2 public ramps are on file, so the launch decides where you fish. Alligators live in Florida fresh water. Keep clear of the bank edge at dawn and dusk, and keep pets away from it. Summer water sits at 86°F: heat and afternoon lightning are the real risks, not the fishing.
Where this data comes from
- Florida FWC — FWC Florida lake bathymetry: class A, a survey of the bottom.
