Sinclair Lake   Be the first to submit input for Sinclair Lake. If you have info on Sinclair Lake, Flint Hills, Greenwood County, Kansas please submit it here to improve this web site.          These outdoors activities are available near Sinclair Lake.   Public Lands Near Sinclair Lake: Toronto State Park, Kansas, 30 miles away El Dorado State Park, Kansas, 32 miles away Tallgrass Prairie National Preserve, Cottonwood Falls - KS, 25 miles away   Hotels Near Sinclair Lake: Americas Best Inn and Suites Emporia, Emporia, 23 miles away Best Western Hospitality House, Emporia, 23 miles away Knights Inn Emporia, KS, Emporia, 23 miles away Days Inn Emporia, Emporia, 23 miles away Holiday Inn Express Hotel & Suites EMPORIA, Emporia, 24 miles away