 One author noted in 1829 that as many as four mills were situated along its banks.Rugged terrain of the Berkshire Plateau characterizes the environs of the Umpachene River, where hills and sheer gorges support a diverse array of plant life throughout woodlands and adjacent wetland areas.Sand and gravel deposits can be found along the river's course, detritus left behind roughly 13,000 years ago as glaciers retreated northward.