7.5' topographical quadrangle of Green Valley and surrounding areas, Pima County, Arizona.
|Latitude||31° 45' 0? N to 31° 52' 30? N|
|Longitude||111° 0' 0? W to 110° 52' 30? W|
- North American Datum of 1983 (NAD 83). Projection and 1000-meter grid: Universal Transverse Mercator, zone 12 2500-meter ticks: Arizona Coordinate System of 1983 (east zone)
- North American Datum of 1927 (NAD 27) is shown by dashed corner ticks. The values of the shift between NAD 83 and NAD 27 for 7.5-minute intersections are obtainable from National Geodectic Survey NADCON software