The Pool for the Yard You Have
What is a Semi-Inground Pool?
A semi-inground pool is the perfect hybrid solution for challenging terrain. Unlike traditional pools that require a perfectly flat site, our semi-inground systems can be partially buried or sit entirely above ground on one side. This allows you to build into hills, integrate with existing decks, and minimize costly excavation.
Custom-engineered steel panels handle the structural pressure of being partially exposed.
Perfect for any yard
Sloped, rocky, high water table, semi-inground pools adapt to challenging sites where traditional pools may not be practical.
Installed in days
Less excavation and efficient installation mean less disruption and more time enjoying your pool.
Built to last decades
American-made steel and advanced G-235 corrosion protection help your pool look and perform its best for years to come.
A finished look families love
Semi-inground pools create opportunities for integrated landscaping, decking, and exterior finishes.
Is it right for my yard?
Tailored solutions for every backyard challenge.
Sloped Yard
Designed for backyards with elevation changes where a traditional pool may require extensive excavation.
Rocky Ground
Reduce major digging and work around challenging terrain with a more flexible installation approach.
Deck-Level Integration
Create a seamless transition between your pool and an existing or new raised deck.
Limited Backyard Space
Semi-inground designs can work well in compact yards while still creating a comfortable outdoor living area.
Find Your Perfect Fit
Whether you want a clean rectangle, a softer freeform look, or something designed around your space, there’s a semi-inground layout that can work beautifully in your yard.
Rectangle
Wide variety of sizes available
Grecian
10’7” x 20’7”
12’ x 24’
14’ x 28’
16’ x 32’
Lagoon
12’ x 23’
14’ x 28’
16’ x 34’
Oval
10’ x 20’
12’ x 24’
15’ x 30’
18’ x 33’
Round
12’
15’
18’
24’
30’
Need something outside these dimensions? Contact a dealer for custom configurations.
Finish It Your Way
A semi-inground pool doesn’t just adapt to your yard — it becomes part of the overall outdoor design. Finish exposed walls with natural stone, pavers, wood, or integrated decking to create a backyard that feels polished, intentional, and uniquely yours.
Stone & masonry facing
Integrated deck & coping
Landscape retaining walls
THE SAMSON 52”
Walls Strong Enough to Hold Back a Hillside
52” Walls for a Deeper Pool Experience
Taller walls create a deeper water level and a more comfortable swimming experience that feels more like a traditional inground pool.
Built for Long-Term Durability
Premium American-made steel and advanced G-235 corrosion protection help your pool stand up to changing soil conditions and years of outdoor exposure.
Engineered for Your Yard
Multiple wall configurations allow your builder to match the pool system to your backyard layout and installation needs.
Made in the USA Since 1984
Over 40 years of American manufacturing and proven performance trusted by homeowners and builders across the country.
Entry Options for Every Family
Your pool entry helps define how your pool looks, feels, and functions. Whether you want a simple walk-in entry or a large lounging area for entertaining and relaxing, there are options designed to fit your space and lifestyle.
Drop-In Steps
Durable molded entry systems designed for comfortable everyday use with a clean finished look and easy installation.
Vinyl Covered Steps
Steel and open-pour step systems wrapped in your pool liner for a seamless appearance that blends naturally with the rest of the pool.
Sundecks & Benches
Create shallow lounging areas, integrated seating, and tanning ledges designed for relaxing, entertaining, and family time in the water
A Wall System Strong Enough to Build Whatever You Can Imagine.
One of our own builders trusted this wall system enough to use it on his own family’s pool. Jeff, a Hydra dealer in Wisconsin, built himself a 300-foot lazy river with a rectangle pool, a swim-up bar and a lounging cove built right into the loop, all set entirely in-ground on the same 52-inch wall system featured on this page. Watch how it came together.
COMMON QUESTIONS
FAQ
Answers to what most homeowners ask before they reach out.
Is it more expensive than a regular pool?
Overall, the pool kit is comparably priced to a traditional inground, but you typically save significantly on excavation — less digging means less cost on site prep and hauling dirt away. Many homeowners find the total installed price is lower than a full in-ground build.
What shapes and sizes are available?
The Samson 52” comes in five shapes — Rectangle, Grecian, Lagoon, Oval, and Round — with a wide variety of size combinations from 10’ × 20’ up to 18’ × 33’ and larger. All panels are built in 4-foot sections for easy handling and a precise fit. See our sizes chart above, or ask your dealer about custom configurations.
What liner options are available?
Hydra offers exclusive liner patterns in 20, 27, 28, and 36 mil (pet-friendly) thicknesses, all made from premium North American vinyl. Every liner carries a 20-year pro-rated warranty and is compatible with the Samson 52” system.
How much of the pool sits above ground?
Semi-inground pools are installed partially below grade with a reinforced concrete footer and support system. Most installations have about 12” below ground with a maximum of 36” exposed above grade depending on the yard and overall design.
Do I need a special permit?
Permit requirements vary by location, but semi-inground pools are typically permitted similarly to traditional inground pools. Your local Hydra dealer can help guide you through the permitting process and site planning requirements in your area.
What can I use to finish the exterior walls?
In addition, exposed walls can be finished with materials like natural stone, pavers, wood, composite materials, or integrated decking. Many homeowners use the exposed wall area as part of the overall backyard design to create a more custom finished appearance.
See What’s Possible in Your Yard
A local Hydra dealer can evaluate your space, discuss your goals, and help design a semi-inground pool that fits your backyard.
Get Inspired
See real Hydra pools, liner transformations and backyard ideas from homeowners and dealers across the country