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Seneca Lake

Seneca Lake, also known as Senecaville Lake, is one of Ohio's top boating and outdoor attractions. Situated in Guernsey County and Noble counties just south of Cambridge, it covers 3,550 acres framed by a picturesque shoreline 45 miles long.

Managed by the Muskingum Watershed Conservancy District, the lake was constructed by the US Army Corps of Engineers in 1938 for flood reduction and water conservation. Popular demand has come to define Seneca Lake as an outdoor recreational paradise.

Seneca Lake and accompanying Seneca Lake Park are easily accessible. Boating, fishing, camping, hiking, biking, hunting, swimming and more are among the reasons Seneca Lake is so popular. The park supports a full schedule of activities and events each year from Memorial Day through Labor Day.


Seneca Lake yields satisfying catches from all corners of its scenic waters. Fishing is permitted both below and above the dam. Seneca Lake contains excellent populations of largemouth bass, crappies, bluegills, bullheads, channel catfish, and saugeye. The lake is stocked with saugeye and striped bass by the Division of Wildlife. It has also been stocked with Muskellunge and White Bass with moderate success.


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     Seneca Lake OH Coordinates:
39.9160N -81.4249W
Map It:
Lake Type:
Surface Area:
3,550 acres
Maximum Depth:
25 ft
832 ft
Normal Water Clarity:
1-3+' ft
Major City:


The full service marina at Seneca Lake offers boat rentals, launch ramps and has a nearby restaurant. A Public Launch ramp is available near the Senecaville Lake Dam year round. Please note there is a 299 horsepower limit for boat motors at Seneca Lake.


A campground of over 500 campsites are available at Seneca Lake Park including Primitive Camping, Tent Camping, RV Camping, Winter Camping and Group Shelter all with nearby showers.

Please review the Lake Resource Guide for additional lodging in the area.


Columbus is the closest major Ohio city to Seneca Lake. Other nearby Ohio cities: Cambridge, Senecaville, Zanesville and Marietta. Seneca Lake is located in Guernsey and Noble counties.

Fun times at Seneca Lake Seneca lake

Seneca Lake Seneca Lake

Average Temperatures Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg. High 38 Avg. High 43 Avg. High 53 Avg. High 66 Avg. High 75 Avg. High 82 Avg. High 85 Avg. High 84 Avg. High 78 Avg. High 66 Avg. High 54 Avg. High 42
Avg. Low 22 Avg. Low 24 Avg. Low 31 Avg. Low 41 Avg. Low 50 Avg. Low 59 Avg. Low 63 Avg. Low 62 Avg. Low 54 Avg. Low 43 Avg. Low 35 Avg. Low 26