United States, California, Butte, Graylodge Waterfowl Refuge roadsides, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. T17N R01E S13 SE1/4 of SW1/4 USGS Quadrangle: Pennington
39.318333 -121.808611 +-805m. NAD83
T17N R01E S13 SE1/4 of SW1/4; 39§ 19m 6s N; 121§ 48m 31s W