The pumphouse is a small circular building with a conical roof tapering to a point. It is constructed of sandstone with a wooden door and open iron-barred windows. The roof was once wood shake but was replaced with asphalt shingles in the 1970s. This building varies slightly from other CCC constructed buildings at Coopers Rock. The stone construction is tighter and more precise. The iron hinges, latch, and window bars that must have been blacksmithed are also a departure from convention. No other Camp Rhododendron building – with the exception of the superintendent's garage – displays iron elements. Finally, even the curvilinear form of the pumphouse is unique. Other Camp Rhododendron constructed buildings show a heavy emphasis on emphatic straight lines. The pumphouse was originally built to provide water to Camp Rhododendron, but is no longer in use.