The Walker River Tribe is located in western Nevada. Walker River Paiute Tribe governmental and administrative offices are located in the town of Schurz. The Walker River IMPROVE protocol site, WARI, is located in the Walker River valley near Schurz. Site elevation is 1,280 m (4,198 ft). The Walker River flows from Walker Reservoir, 12 km (8 mi) north of the site, southward to Walker Lake, 20 km (12 mi) south of the site. Surrounding terrain is flat to the east. To the west elevation rises along the eastern slope of a northern extension of the Wassuk Range up to elevations near 2,000 to 2,200 m (6,500 to 7,000 ft), 650 to 700 m higher than the monitoring site, at a distance of 20 km.