Trip Planner:   USA  /  Ohio  /  Wilmington  /  Cowan Lake State Park

Cowan Lake State Park, Wilmington

#46 of 61 in Nature in Ohio
Cowan Lake, also known as Cowan Creek Reservoir, is a lake within Cowan Lake State Park in Clinton County, Ohio, United States. Its surface area is 692acre. Cowan Lake lies near the Cincinnati Arch, an uplifting of bedrock that occurred during the Appalachian Mountains' building process. The erosion of this arch in the Cowan region exposes fossil-rich limestone. The limestone near Cowan and other parts of the exposed arch are some of the most famous fossil hunting fields in the world.The lake takes its name from Cowan Creek, the creek that was dammed in 1950 to form the lake. Its source is at. Cowan Creek was named for John Cowan, the first surveyor of the area.Cowan Lake State Park, which includes the lakes and its immediate surroundings, was dedicated in 1968.
Put Cowan Lake State Park at the forefront of your travel plans using our Wilmington trip planning tool .
Create an itinerary including Cowan Lake State Park
Cowan Lake State Park Reviews
Rate this attraction
TripAdvisor Traveler Rating
TripAdvisor Traveler Rating 3.5
52 reviews
  • Cowan Lake is truly one of the nicest state parks in our area. Their campsites are well maintained, fairly level, and spacious. The bath houses and restrooms are clean, and nicer than most state parks...  more »
  • Nice spacious camp sites, BUT there is no sewer or water hookups at each one. There is water hydrants to fill your fresh water tanks with and hydrants throughout the park to fill water jugs. The bathr...  more »
  • I have been to many state and national parks and this was one of the worst. Lake was a deep green murky color, cabins were outdated and needed maintenance (Cabin #6 had a drippy bathroom faucet with b...  more »
  • Went there to practice some photography. Went to one of the boat ramp. I saw all kinds of wildlife - geese, snakes, cranes, Hawks... I loved it. Also did a bit of hiking looking at the variety of plants around. I used to go there as a child but haven't been in over 40 years. I like it more as an adult than I did a child. A beautiful place that was not crowded. Saw a few folks fishing off the docks. A great place to get back to nature.
  • They have many free programs that range from fitness hikes, to kayaking, stand up paddle boarding, archery and educational programs too. Their website is very comprehensive with abilities to book for any activities that do cost and/or require reservations. Their most up to date schedule is always to be found on their Facebook site.
  • Cabin was not upgraded as the others (2 years in row) . Missing coffee table end tables and lamp (from last year) . Broken refrigerator and cheap coffee pot replaced better appliances that were in cabins. New bed frames and mattress. Still missing glass windows, hence you end up letting AC escape. Friendly and helpful staff.
  • Beautiful and clean State park. Large campsites with electric. Water is available but you have to handful the tanks.
  • Quiet, 10 horsepower restricted lake means the big, loud, fast boats that make boating in human-powered craft difficult are absent. Portions of the lake have aquatic weed problems, but the state is actively working to remove them.

Plan your trip to Wilmington

  • Get a personalized plan

    A complete day-by-day itinerary
    based on your preferences
  • Customize it

    Refine your plan. We'll find the
    best routes and schedules
  • Book it

    Choose from the best hotels
    and activities. Up to 50% off
  • Manage it

    Everything in one place.
    Everyone on the same page.

Where to stay in Wilmington

Browse hotels, guesthouses, and unique homes and book your stay on the world's leading accommodation sites.
Live like a local, find unique places to stay
Millions of travel reviews on TripAdvisor