Patrick Martin, county facilities and grounds manager, stands in front of the water wheel he and a group of county employees have constructed at the Calaveras County Government Center. Enterprise photo by Dakota Morlan Calaveras Countyâs lackluster government center is being transformed into a destination in its own right, thanks to one man with a vision. County Facilities and Grounds Manager Patrick Martin and his small band of employees installed a custom-made water wheel outside the government center on Dec. 21âthe focal point of a new recreational area that will bring babbling water, lush vegetation and ample seating to a previously uninspiring patch of lawn.