GTM Research Reserve - Guana River Dam Launch
Northeast Florida · St. Johns County · Guana River / GTM estuary
A tidal salt-marsh paddle from GTM's Guana Dam, with direct estuary access, on-site rentals and a very real need to plan around the tide.
Map position was derived from this record’s sources and is awaiting confirmation against the research directory.
Current Florida DEP/GTM sources verify two dam ramps, $3 parking, paddling use, on-site kayak/SUP concession and critical Guana River low-tide mudflat limitation. Moderate/intermediate rating is a PaddlePin interpretation pending field validation BATCH 3 2026-08-27: the two ramps at Guana Dam reach different water and are no longer conflated - the tidal river below the dam, and the impounded Guana Lake above it, brackish at its southern end and fresher further north. Neither route is rated by any source; the location keeps its intermediate assessment and the low-tide mudflat constraint is the governing planning fact.
Why paddle here
- Guana River is a textbook PaddlePin location: the launch is easy to find, but whether you can get back to it depends on information a generic map pin will not tell you.
Launches, parking and access
Where you actually put the boat in, how far you carry it and over what. This is the part official sources are worst at, so it is the part we say most plainly — including where we do not know yet.
Guana Dam river-side small boat ramp
Main launch- Launch type
- Small boat ramp
- Access
- Public access
- Hours
- Guana River Dam Use Area 4 a.m. to 9 p.m.
- Fees
$3 parking fee
High confidence- Parking
Guana Dam parking area
High confidence
- Carry to the water
- Carry not yet measured
Nobody has checked this yet.Report the carry — How far did you carry your boat from the parking area to the water? (opens in a new tab)
- How hard that carry is
- Not yet assessed
Nobody has checked this yet.Rate the carry — How hard was that carry with a loaded boat? (opens in a new tab)
- Ground you cross
- Not yet recorded
Nobody has checked this yet.Describe the ground — What did you cross on the way — pavement, sand, stairs, loose trail? (opens in a new tab)
- Boat cart
- Not yet assessed
Nobody has checked this yet.Report cart use — Could you use a boat cart the whole way, or did you have to carry? (opens in a new tab)
- Unloading
- Not yet assessed
Nobody has checked this yet.Report unloading — Could you unload beside the water before parking, or carry the whole way? (opens in a new tab)
- Restrooms and rinse
- Not yet measured from the launch
Nobody has checked this yet.Report facilities — How close are the restrooms and showers to this launch? (opens in a new tab)
The dam carries two ramps. This is the tidal river side, which is what this record covers.
Unconfirmed at this launch — can you help?
- Where exactly do you put the boat in the water here?Pin the launch — Where exactly do you put the boat in the water here? (opens in a new tab)
Guana Dam lake-side small boat ramp
- Launch type
- Small boat ramp
- Access
- Public access
- Hours
- Guana River Dam Use Area 4 a.m. to 9 p.m.
- Fees
$3 parking fee
High confidence- Parking
- High confidence
- Carry to the water
- Carry not yet measured
Nobody has checked this yet.Report the carry — How far did you carry your boat from the parking area to the water? (opens in a new tab)
- How hard that carry is
- Not yet assessed
Nobody has checked this yet.Rate the carry — How hard was that carry with a loaded boat? (opens in a new tab)
- Ground you cross
- Not yet recorded
Nobody has checked this yet.Describe the ground — What did you cross on the way — pavement, sand, stairs, loose trail? (opens in a new tab)
- Boat cart
- Not yet assessed
Nobody has checked this yet.Report cart use — Could you use a boat cart the whole way, or did you have to carry? (opens in a new tab)
- Unloading
- Not yet assessed
Nobody has checked this yet.Report unloading — Could you unload beside the water before parking, or carry the whole way? (opens in a new tab)
- Restrooms and rinse
- Not yet measured from the launch
Nobody has checked this yet.Report facilities — How close are the restrooms and showers to this launch? (opens in a new tab)
Recorded because it physically exists at the same dam, but no lake route is created here: the research asks that Guana Lake become its own entity, since it shares a dam with the river and almost nothing else.
Unconfirmed at this launch — can you help?
- Where exactly do you put the boat in the water here?Pin the launch — Where exactly do you put the boat in the water here? (opens in a new tab)
Routes
Difficulty belongs to the route, not the location. One place can offer a beginner loop and an advanced crossing.
Guana River tidal out-and-back
Not yet ratedOut and back· Timing mattersPut in at Guana Dam river-side small boat ramp.
Tide timing decides this paddle: at low water the mudflats become the problem.
Only the river side is routed here. The research asks that Guana Lake become its own entity rather than a second route on this record, because the two behave very differently despite sharing a dam. The Intermediate skill level is stated for the location and not for this route specifically DESK RESEARCH 2026-08-27: no source rates this route, so it stays unrated while the location carries the intermediate assessment. The low-tide mudflat constraint already recorded is the governing planning fact.
Help verify this route
Have you paddled Guana River tidal out-and-back?
- How difficult did this route actually feel?Rate the difficulty — How difficult did this route actually feel? (opens in a new tab)
- How far was this route if you tracked it?Report the distance — How far was this route if you tracked it? (opens in a new tab)
- How long did it take you, and at what pace?Report the time — How long did it take you, and at what pace? (opens in a new tab)
Guana Lake from the dam ramp
Not yet ratedOut and backPut in at Guana Dam lake-side small boat ramp.
DESK RESEARCH 2026-08-27: recorded so the two ramps at Guana Dam are not conflated. The river was dammed in 1957 and the lake above it is a different paddle from the tidal river below - brackish at its southern end near the dam and fresher away from it. Difficulty and distance are not published for either.
Help verify this route
Have you paddled Guana Lake from the dam ramp?
- How difficult did this route actually feel?Rate the difficulty — How difficult did this route actually feel? (opens in a new tab)
- How far was this route if you tracked it?Report the distance — How far was this route if you tracked it? (opens in a new tab)
- How long did it take you, and at what pace?Report the time — How long did it take you, and at what pace? (opens in a new tab)
What conditions do here
How much each factor typically governs a trip at this location.
These are not live conditions. This describes how much each factor typically governs a trip here. Always check the current forecast, tide table and river level before you launch.
- Wind
- Plan around it
- Current
- Plan around it
- Tide
- Trip-deciding
- Boat traffic
- Minor factor
- Boat traffic: Low-to-medium
Planning
- Exposure
- Tidal marsh/river with exposed sections
- Seasonal
- Mudflats can make Guana River unnavigable at low tide, including preventing return to the ramp until the tide rises.
- Best time of day
- Plan around adequate tide; morning only if tide supports it
- Reservations & permits
- No self-guided day-paddle permit identified
Hazards
Tidal timing matters
Low-tide mudflats
Tidal timing matters
tide timing
Wind exposure
wind
Easy to get lost
estuary navigation
Motorboat traffic
possible boat traffic
Do not launch the Guana River side without checking tide. At low tide the river can become unnavigable and access to/from the ramp can be blocked by mudflats.
Amenities and craft
Craft suited to this water
Bringing your own boat: Yes
Amenities
- Restrooms — not recorded — Unknown at ramp; visitor facilities elsewhere in reserve
- Showers — No shower confirmed
- Picnic area — not recorded
- Food nearby — No food concession confirmed at dam
- Drinking water — not recorded — Bring water
What you will see
Rentals and outfitters
- RentalsHigh confidence
PaddlePin tips
Keep Guana River and Guana Lake as separate future route/location entities; they share a dam but have very different water and tide behavior.
High confidenceBest Time of Day: Plan around adequate tide; morning only if tide supports it
High confidenceSafety Notes: Do not launch the Guana River side without checking tide. At low tide the river can become unnavigable and access to/from the ramp can be blocked by mudflats.
High confidence
Been here? Help keep it accurate
PaddlePin is researched from official sources. Paddlers who have actually been are how it stays true.
Contributions are reviewed before anything on this page changes. PaddlePin stays the researched directory — your report is evidence we check, not an edit to it.
Sources
Where this information came from, and when we last read it.
- Primary source — floridadep.gov, read
- Secondary source — gtmnerr.org, read
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