Lake Marion has an average depth of 13 feet, making it a relatively shallow lake compared to others of similar size. However, the deepest areas near the Santee Dam reach up to 76 feet, creating excellent spots for fishing and boating.
Much of the lake has a natural, uneven bottom due to its origin—Lake Marion was created during the 1940s by damming the Santee River as part of a hydroelectric project. As a result, the lakebed includes flooded forests, old creek beds, and submerged structures, adding to its unique underwater landscape.
Depth varies by location:
- Shallow coves and backwaters can be just a few feet deep.
- Main channels and areas near the dam are significantly deeper.
The old river channels that run beneath the lake remain some of the deepest spots and are favored by anglers.
Where Is Lake Marion Located?
Lake Marion stretches across five counties in South Carolina: Clarendon, Calhoun, Berkeley, Orangeburg, and Sumter. It’s centrally located between Columbia and Charleston, making it a convenient destination for both city residents and travelers.
The lake spans approximately 110,000 acres, making it the largest lake in South Carolina. It connects with Lake Moultrie via the Diversion Canal, and together they form part of the larger Santee Cooper Reservoir System.
Lake Marion is bordered by charming towns like:
- Santee – A popular destination for golf, boating, and lakeside living
- Eutawville – Known for fishing spots and local culture
- Summerton – A peaceful community with historical roots
Fishing, Wildlife & Ecosystem
Lake Marion is a fisherman’s paradise and a haven for wildlife. The lake is nationally recognized for trophy catfish and is also home to:
- Largemouth bass
- Striped bass
- Crappie
- Bream
- Bluegill
- Flathead catfish
Many anglers seek out the deep pockets near the Santee Dam or the submerged stumps and channels where fish hide.
Beyond fish, Lake Marion is rich with:
- Alligators
- White-tailed deer
- Ospreys, bald eagles, and herons
- Turtles and aquatic mammals
The diversity of species is one reason the lake is part of protected wildlife areas and conservation efforts. Its shallow coves and wooded shorelines provide ideal habitats for both aquatic and terrestrial wildlife.
Recreation, Boating & Local Attractions
Whether you’re into fishing, kayaking, or just relaxing on a boat, Lake Marion offers something for everyone. The lake’s varying depth actually enhances its recreational value—shallow areas are ideal for swimming and paddleboarding, while deeper waters suit jet skis, houseboats, and sailing.
Key recreational features include:
- Multiple marinas and public boat ramps
- Campgrounds and cabin rentals on or near the shore
- State parks like Santee State Park, with hiking trails and lake access
- Golf courses overlooking the water (perfect for a weekend getaway)
The area is popular for both vacation homes and full-time living, with plenty of local shops, restaurants, and events that give it a true community feel.
Lake Marion Real Estate & Living on the Water
Lake Marion isn’t just a great place to visit—it’s a top destination for homebuyers looking to enjoy waterfront living in South Carolina. The lake’s depth and geography allow for a variety of property types, from secluded wooded lots to luxury homes with private docks.
Key real estate facts:
- Waterfront homes average around $617,000 but can range from $134,500 to $3.5 million
- Median home price (as of March 2025): $394,221
- Average lot price: around $63,095
Whether you’re looking for a retirement home, a weekend retreat, or an investment property for vacation rentals, Carolina Properties at Lake Marion can help you find the perfect fit. We specialize in connecting buyers to the best listings around the lake.
FAQ: Lake Marion at a Glance
Q: What is the average depth of Lake Marion?
A: Approximately 13 feet. The deepest areas reach up to 76 feet near the dam.
Q: Is Lake Marion the largest lake in South Carolina?
A: Yes! At over 110,000 acres, it is South Carolina’s largest lake.
Q: Can I swim and boat safely on Lake Marion?
A: Lake Marion offers many popular areas for swimming, boating, and fishing, with multiple marinas and public access points. However, as with any large body of water, safety depends on conditions, individual skill, and caution. Always follow local guidelines, observe weather and water conditions, and exercise proper safety practices when enjoying the lake.
Q: What types of fish are in Lake Marion?
A: The lake is full of largemouth bass, catfish, striped bass, bream, and more—perfect for recreational and trophy fishing.
Q: Are there homes available around Lake Marion?
A: Yes! Carolina Properties specializes in waterfront homes, vacation properties, and lakefront lots across the Lake Marion region.
Final Thoughts: Lake Marion Is More Than Just Deep—It’s Deeply Loved
Lake Marion may average 13 feet deep, but it offers miles of opportunity—from world-class fishing and boating to stunning waterfront living. Whether you’re an outdoor enthusiast or a homebuyer dreaming of a lake view, this body of water offers unmatched beauty, lifestyle, and value.
Whether you’re dreaming of a cozy weekend getaway, a full-time lakeside retreat, or a smart investment property, Lake Marion has it all—and the team at Carolina Properties at Lake Marion is here to help you make it a reality.
Our local experts live and work right here in the Lake Marion area. We understand the market, know the hidden gems, and can guide you through every step of the buying process—from finding the perfect lot or home to navigating inspections, financing, and negotiations.
With exclusive access to waterfront listings, deep knowledge of the area, and a commitment to personalized service, we’ll help you find a home that fits your lifestyle and your budget.
Don’t wait to start your lakefront journey. Contact Carolina Properties at Lake Marion today and let’s find your perfect piece of paradise.