Marsh Unit One is a reservoir located in Grant County, Washington. It appears on the O'Sullivan Dam USGS 7.5-minute topographic quadrangle. The nearest populated place is Marine View, approximately 3.9 miles to the W.
Grant County · Washington
Marsh Unit One is a reservoir located in Grant County, Washington. It appears on the O'Sullivan Dam USGS 7.5-minute topographic quadrangle. The nearest populated place is Marine View, approximately 3.9 miles to the W.