Merritts Mill Pond is a four-mile impoundment of Spring Creek, dammed at US 90 since the 1860s grist-mill era. Its headwater is Jackson Blue Spring, a first-magnitude spring pushing about 70 million gallons a day, joined along the run by smaller named springs — Shangri-La, Twin Caves, Hole-in-the-Wall and others. Below the dam, Spring Creek runs about 2.5 miles to the Chipola River, a state-designated paddling trail; the pond itself is a Florida Designated Paddling Trail too.
Spring-fed and cold year-round — the water holds roughly 68–72°F in every season, which makes summer swimming bracing and winter paddling comfortable. Summer is peak season: Blue Springs Recreation Area at the head spring operates from Memorial Day through Labor Day, and aquatic grass growth is heaviest in late summer, when hydrilla can reach within a foot of the surface in stretches and surface algae can collect. FWC has run repeated herbicide and mechanical-harvest treatments in recent years, so open-water conditions vary — the main channel is generally kept navigable. Fall through spring brings the clearest water and the quietest pond, though the recreation area is closed and there is no lighting anywhere on the water after dark.
Plain English Summary
| Entire pond | Submerged stumps and logs sit just under the surface throughout — practical speeds are idle to slow, and local boating restrictions are enforced. Algae mats can hide snags. |
| Redear sunfish (shellcracker) | Special FWC regulation: daily bag limit of 10, and any redear under 10 inches total length must be released immediately. |
| Springs & caves | The underwater cave systems are for certified cave divers only; dive access is coordinated through local operators and Blue Springs Recreation Area permits. |
| Full legal text | Official boating regulations → |
How big and how deep is Merritts Mill Pond?
Where is the public boat ramp on Merritts Mill Pond?
Can you swim in Merritts Mill Pond?
What is the fishing like on Merritts Mill Pond?
What's the hydrilla situation on the pond?
Can you dive the caves in Merritts Mill Pond?
Merritts Mill Pond is a four-mile, 202-acre ribbon of spring water near Marianna in the Panhandle — dammed at US 90 after the Civil War to power a grist mill, fed by Jackson Blue Spring, and so clear you can watch fish hold over the eel grass from a kayak seat. The water runs a cold 68–72°F in every season, moss-draped cypress line the run, and the named springs along it — Shangri-La, Twin Caves, Hole-in-the-Wall — double as cave-diving destinations. The pond holds the Florida state record redear sunfish at 4.86 pounds, for years a world record; in this ultra-clear water FWC's advice is to cast long and fish cloudy days or a ripple. A special shellcracker regulation applies — 10 fish, 10-inch minimum — and it's actively enforced.
Navigation is idle-speed almost everywhere: submerged stumps from the original creek corridor sit just under the surface, and algae can hide them. That keeps fast boats away and makes this some of the best beginner paddling water in the Panhandle — an official Florida Designated Paddling Trail, about 1.5 miles from the public ramp up to Jackson Blue. Hydrilla is the ongoing battle: after a drawdown took out the grass carp, grass ran to within a foot of the surface in recent summers, and state herbicide and harvest treatments now keep the main channel open while the edges go to the grass in late summer. One warning before anything else — the Google Maps pin for the pond routes to a dead-end private road with no access. Navigate to the Hunter Fish Camp Road public ramp instead, or to Blue Springs Recreation Area in season.