Grand Lake St. Marys State Park offers camping accommodations around Ohio's largest inland lake. Located at an elevation of 870 feet, the park provides both standard camping and upscale lodging options. The campground features 219 sites with varying levels of amenities across its 13,500 acres, with most sites offering water and electrical hookups. Weather conditions can shift quickly, with summer temperatures typically ranging from 70-85°F.
What to do
Fishing opportunities: Grand Lake St. Marys State Park provides access to the 13,500-acre lake where visitors can catch bass, crappie, and catfish. According to one camper, "friendly staff, very clean restrooms, playground, could not swim in the water due to contamination which they have spent millions to repair and is slowly on the up and up, not too far from town, surrounded by many park accesses to Grand lake for fishing, boating or just hanging by the water."
Playground activities: Indian Lake State Park Campground offers multiple playground areas for children. One visitor notes, "There is a camper beach area, swimming pool and boat launch within the campground." Another mentions it's "a fun, family friendly, safe place to enjoy camping."
Swimming pools: When lake conditions aren't ideal, several campgrounds maintain swimming pools. At Natural Springs Resort, "Lake is nice and clear, pretty cold (would love to feel it in August or September). Fun to jump into and overall pretty." Another visitor mentioned, "Very nice and clean Campground. The lot we stayed in was a good size and was right on the spring."
Hiking trails: Walking paths range from paved trails to natural terrain routes. At Johnny Appleseed Campground, "The Park is connected to the river greenway which is a beautiful walk along the river!" Many campers appreciate these accessible trails for morning walks or evening strolls.
What campers like
Spacious campsites: Grand Lake St. Marys offers generous spacing between many sites. One camper shared, "My husband and I drove 8 hours to visit family and decided to camp here instead of staying in a hotel. It was great! The showers were always clean, the site is huge compared to what we normally stay in."
Clean facilities: Campground cleanliness consistently rates highly in reviews. At Johnny Appleseed Campground, visitors praise "the most modern, clean shower/bath house I've seen. Restrooms are locked with a code and very clean. I didn't use the showers, but they look above average compared the the other dozen I've seen this summer."
Recreational amenities: Wildcat Woods Campgrounds offers diverse activities on-site. As one reviewer noted, "Very clean and friendly! They have the nicest cleanest camp bathrooms/shower house I've ever seen. Fishing, pond swimming, trails."
Family-oriented atmosphere: The campgrounds around Celina emphasize family experiences. Indian Lake State Park is described as "my close to home camping get away. Right on Indian lake, you can enjoy the beach, boating, swimming, fishing and relaxing. Last year, the state park added a nice inground swimming pool."
What you should know
Water quality concerns: Grand Lake St. Marys has experienced water quality issues that campers should be aware of. One camper reported, "The entire lake stinks of pig poop. All the air smells like poo. You feel like you are breathing feces when you approach the water."
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