When setting up the perfect dock on your waterfront property, there’s one key question on everyone’s mind: How deep should the water be for installing a lake dock? Getting that sweet spot regarding water depth can make or break your dock’s functionality and life. Whether you’re considering a floating dock or a fixed dock (also known as a stationary dock), water depth is your top priority. But don’t sweat it—we’re here to break it down so you can get your dock dialed in and ready for action. Let’s talk about today how deep the water should be for installing a lake dock!
Floating Docks vs. Fixed Docks: What’s the Difference?
Before we discuss how deep the water should be for installing a lake dock, it’s super important to understand the two main types of docks: fixed docks and floating docks.
Fixed Dock (Stationary Dock)
A fixed or stationary dock is anchored to the lake bed with supports or pilings, making it a solid structure that won’t budge, regardless of water level changes. These docks are perfect for lakes with stable lake levels and are often used in areas with a consistent depth. But always keep in mind that if the water gets too low, the dock could end up high and dry.
Floating Dock System
On the other hand, this type of dock sits right on the water’s surface and rises or falls at the lake level. It’s the go-to for areas with fluctuating levels of water, and it’s generally used in lakes where the water depth changes throughout the year. They’re perfect for lakes with more depth and are relatively easy to install.
The Key Factor for Dock Installation: Water Depth
So, how deep should the water be for installing a lake dock? There’s no one-size-fits-all answer, but here’s a clear answer to what you should consider.
In the case of the floating dock, the minimum water depth should generally be around 3-5 feet.
This gives your boat enough clearance to prevent any damage to the hull or lower unit (especially if you’ve got a stern drive). But, if you’re dealing with a shallow lake, make sure to double-check the depth during times of low water.
On the flip side, in a fixed dock, the required depth can vary, but most dock experts recommend around 5-8 feet of water at the end of the dock. This depth ensures that your boat’s stern drive or lower unit won’t hit the lake bottom, especially when the level of lake water drops. You’ll also need to factor in the type of boat you have and whether you need more depth for bigger boats.
No matter what the situation is, the professional dock installation contractor knows the best. So make sure you call your local dock installation professionals and follow what they suggest.
Depth of the Lake & Your Boat’s Needs
Your boat plays a main role in determining the minimum depth of water needed for dock installation. You can get away with less depth if you’re running a small fishing boat or a pontoon.
But more depth is needed if you’ve got a larger boat with a stern drive.
Also, remember that the lower unit of your boat needs enough clearance below the water line so you won’t tear up the bottom of the lake or damage your watercraft when pulling in or out of the dock.
- Larger boats with deeper drafts might need 7 feet or more at the end of the dock.
- Medium-sized boats (think speedboats or wakeboard boats) should have at least 4 to 6 feet of water.
- Smaller boats typically need about 2 to 3 feet of depth.
You also need to think about wave action. Waves can change the lake depth, and if your watercraft is tied up at the dock and you’ve got big waves rolling through, you don’t want the boat banging into the lake bottom. Deeper water at the end of your boat dock helps prevent that.
What About Fluctuating Lake Levels?
Let’s now talk about lake levels because they’re a real deal when setting up your boat dock. Some lakes experience major changes in water depth due to dam activity, seasons, and rainfall. If your lake has fluctuating water levels, a floating dock is a no-brainer. Since it adjusts with the lake level, you’ll avoid problems like your dock being underwater or suspended way above the water line.
On the flip side of the coin, if you live on a lake with a consistent water level, a fixed or stationary dock might be the way to go. But keep an eye on things—if the lake water level drops too much, your boat dock could end up sticking out like a sore thumb, leaving your boat high and dry.
Also, double-check local records or talk to your dock construction company about the lake’s historical levels before committing to a stationary dock.
Dock Frame & Construction Materials
When building a boat dock for your lakefront property, the dock frame and the materials you choose for the dock are critical to its stability and durability. Whether you’re going for a floating or fixed dock, you need sturdy materials to withstand the elements and the inevitable wear and tear.
- Steel is strong but prone to rust, so it needs to be coated or galvanized to handle lake environments.
- Wood is great for the traditional look, but if not properly treated, it can wear down over time.
- Aluminum is lightweight, rust-resistant, and durable—perfect for floating docks and easy maintenance.
A dock construction contractor can help you choose the best materials based on your usage needs and the lake where the dock needs to be built.
Consider the Dock Height
Don’t forget about the height of the boat dock when figuring out how deep the water should be for installing a lake dock. The dock height is the distance from the walking surface of your dock to the water line.
For most boat docks, a height of 12 to 18 inches above the waterline is perfect. If you’re dealing with a lot of boat traffic, you might want your dock a little higher to prevent waves from swamping it.
If installing a stationary dock, you must know where the lake sits at the full pool—the highest consistent water level it reaches. You’ll want to make sure that your dock is low enough to access the water when levels drop easily and high enough above this level to avoid getting submerged.
Always call your local dock construction professionals to discuss these important matters and leave the dock construction and dock maintenance to them. It’s the only right way!
Conclusion
Water depth is key when installing a boat dock. Whether you choose a floating dock that adjusts with the lake level or a fixed dock for stability, ensure enough clearance for your boat. Consider the minimum water depth, boat size, and fluctuating lake levels to find the right balance.
With the right planning and understanding of your lake’s conditions, your dock will provide years of enjoyment. Always double-check the depths and consult with a reputable dock builder before launching your boat.
Foothills Docks: Your Trusted Team for Expert Dock Solutions
Foothills Docks is your go-to crew for all things boat dock! We’re all about hooking you up with the perfect dock setup for chillin’ on Lake Hartwell and Lake Keowee. With 20+ years of experience and over 1,500 docks installed, we know our way around dock maintenance, dock replacement, dock installation, dock fabrication, and everything in between.
We’re a family-owned business and proud to be listed as a trusted boat dock construction contractor with Duke Energy. Yeah, the permitting process can be a hassle, but don’t worry—you can count on us.
Our boat dock designs are engineered, approved, and built to last, so you can just kick back and relax. Ready to level up your dock game? Give our dock construction specialists a call, and let’s make it happen!
