Genoa Township Land Conservation Association

Preserving and Protecting Our Natural and Scenic Resources

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Grand Oak


Habitat

The Grand Oak property features 46 acres of large mature trees, wooded ravines, small streams and wetlands. The subdivision’s woodlands provide homes for the fox, squirrel, woodchuck, rabbit, whitetail deer, coyotes, geese and many other species of wildlife. The forest floor nurtures a wide variety of plant species, producing such wildflowers as large-flowered trillium, wild geranium, bloodroot, and spring beauties. Other varieties seen at Grand Oak include: trout lily, may apple, bugle, coltsfoot, harbinger of spring, hepatica, purple cress, rue anemone, spring beauty, phlox, Dutchman’s breeches, cut-leaved toothwort, golden alexander, goldenseal and wild ginger. Blooms on the spicebush, buckeye, dogwood and shagbark hickory also color the local woods.

Much of the thick beech-maple forests that covered Delaware County after the retreat of the glaciers were felled many years ago by loggers and to make way for farming. And while a healthy second-growth forest is preserved in Alum Creek State Park and many parts of Genoa Township, Grand Oak retains about 25 acres of the old-growth trees where the cutting action of the stream made ravines too steep and rocky for farming. One old oak tree at the Grand Oak subdivision had been identified as a bicentennial tree – more than 200 years old – but was hit by lightning and died about the time the development was started. Developer Bob Webb, it is said, named the subdivision to honor that tree.

Authorized by Congress through the Flood Control Act of 1962, Alum Creek Dam was constructed just one mile west of the Grand Oak property by the Army Corps of Engineers as part of the flood control plan for the Ohio River Basin. Construction began in August of 1970 and was completed in 1974, and the lake was filled by summer of 1976. The dam is a 1.7-mile wide earthen embankment that creates a lake about 11 miles in length, with a surface area of about 3,387 acres. The lake is surrounded by 4,630 acres of parkland leased by the Corps of Engineers to the state’s Department of Natural Resources. The lake is very popular for boating, fishing, hunting, hiking, and swimming, with the northern reaches of the lake restricted to paddling. A small stream in the Grand Oak subdivision flows southweterly into Alim Creek below the dam, near where Interstate 71 passes overhead.

 

A 1958 Ohio Department of Transportation photo shows construction of I-71 through Genoa Township, the village of Africa (center, above highway) and the future location of Alum Creek Lake (left/center).

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Lewis Center Road (right) used to continue on eastward from Genoa Township, but is now interrupted by the lake. (GTLCA photo)


Ohio shale cliffs are notable around the lake and in many areas of the watershed, exposed as the flowing waters cut through underlying bedrock. The shale was formed by mud washing into an ancient sea that covered the area hundreds of millions of years ago. The deep coves of Alum Creek Reservoir are lined with standing timber, providing excellent habitat for many species of fish, including largemouth bass, smallmouth bass, muskellunge, saugeye, black and white crappie, white bass and channel catfish.