New fixed and floating docks built for a reservoir that moves two feet a year — and for the 18-inch deck rule that applies here and almost nowhere else on the TVA system.
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TVA permits both. 18 CFR §1304.204 says docks may be fixed, floating, or a combination of the two. The right answer here is driven by something specific to Guntersville: the lake only moves about two feet a year.
On tributary lakes with ten- or twenty-foot drawdowns, floating is close to mandatory — a fixed pier would be left standing in mud half the year. Guntersville is a mainstem navigation reservoir, so TVA holds it near constant for barge traffic. A fixed pier stays usable in every month, which is why fixed boathouses are common here and rare on tributary lakes an hour away.
Where floating still wins on this lake is depth, not water level: the silted creek arms — Mud Creek, North Sauty, South Sauty — and shallow approaches like the Gunter Mountain side off Grant, where the marina channel runs about four feet at mean low water. In shallow water a floating system rides the surface and stays usable where a fixed deck at the required 18-inch clearance would leave you stepping down into nothing.
§1304.204(d)
Fixed piers and docks on Guntersville — along with Pickwick, Wilson, Wheeler and Nickajack — must have deck elevations at least 18 inches above full summer pool. Every other TVA reservoir requires 24 inches.
Six inches sounds like nothing. It sets the whole geometry of the structure. Full summer pool sits in the 594 to 595 foot range, so the deck height, the pile cut-off elevation, the walkway slope from the bank and the freeboard on your gunwale when you step aboard all key off that number. Build too low and the permit fails. Build too high and boarding a low-freeboard boat becomes a reach, especially at winter pool near 593 feet.
We set pile cut-offs from a shot elevation, not from the current water surface. Water level on the day of the survey is not the datum.
| Floating dock | $15–$40 per sq ft |
|---|---|
| Fixed piling dock (wood) | $20–$40 per sq ft |
| Aluminum pipe dock | $20–$40 per sq ft |
| Modular dock | $30–$50 per sq ft |
| Covered dock / boathouse | $40–$90 per sq ft |
| Basic dock, all in | $3,000–$10,000 |
| Dock with a boat lift | $5,000–$38,000 |
Source: HomeGuide, Fixr
Cost drivers on this lake: water depth, distance from shore, barge-only access, covered versus open, decking upgrade, electrical, and whether existing pilings can be reused. Reusing sound pilings is the single biggest saver — and the waterline band is what decides whether they are sound.
These are market ranges for this kind of work on this lake, not our rates. Your quote depends on depth, access and scope — we price after we look at it.
Unencased foam flotation is prohibited for new work, repairs and replacement under §1304.400, and all of it has to be removed and replaced by December 31, 2031. Flotation within 40 feet of a fuel line must be 100% impervious to water and fuel. Used plastic or metal drums are prohibited outright.
Every new dock, pier, boathouse, lift and walkway needs TVA approval under Section 26a. The application fee for minor shoreline alterations is $1,000. TVA states it strives to issue those permits within 100 days, and that timeframes can extend to 120 days.
Because this lake gives you no dry-work season, the permit calendar sets your schedule, not the weather. Apply in the fall for a spring dock.
The full permit walkthrough, with the size and setback rules →
TVA permits both. Because the lake only swings about two feet a year, a fixed pier stays usable in every month, which is why fixed structures are common here. Floating wins where the water is shallow — the silted creek arms and the Gunter Mountain approaches — because a float rides the surface instead of sitting on a deck that has to clear summer pool by 18 inches.
Under 18 CFR 1304.204 the footprint is capped at 1,000 square feet, or 1,800 square feet in subdivisions recorded before November 1, 1999 that meet TVA's preexisting-development test. The structure may not extend more than 150 feet from shore or more than one-third of the distance to the opposite shoreline, whichever is less. Access walkways are not counted in the footprint and are capped at 6 feet wide.
The permit is the long pole, not construction. TVA charges $1,000 for minor shoreline alterations and states it strives to issue those permits within 100 days, with timeframes extending to 120 days. Apply in the fall and you are on the water for spring. Apply in April and you are looking at late summer.
Tell us the arm of the lake, roughly how deep it is off your bank, and what you want to keep on the dock. We will tell you what will fit inside the TVA rules before anyone talks price.
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