Five miles of the Truckee River could become a new regional park through purchase of the McCarran Ranch. Water rights to be sold as part of the ranch sale would provide up to 1,000 acre-feet of water a year to improve water quality and keep the Truckee River flowing in the dry summer months. Bill Isaeff, Sparks assistant city manager and chairman of a regional Truckee River oversight committee, said the 1,000 acre-feet of water rights would be purchased as part of settling a water-quality case filed by the tribe in the mid-1980s. Washoe County Commissioners on July 11 backed the planned purchase of the 1,591-acre ranch 12 miles east of Sparks. The conservancy would buy the land for $2.2 million. Connection fees for the Reno-Sparks sewer treatment plant would buy 1,000 acre feet of water from the ranch for $2.6 million. The conservancy would sell about 900 acres, including both sides of the river, to the county for a regional park. About $1 million for the purchase is earmarked in a proposed $38 million county bond issue for parks and libraries on the November ballot. The Conservancy would keep about 625 acres to restore the flood plain for wildlife and create a buffer zone.