Search results
Results from the WOW.Com Content Network
From approximately 1947–1992, the USGS produced the 7.5 minute series, with each map covering an area one-quarter of the older 15-minute quad series, which it replaced. [1] A 7.5 minute quadrangle map covers an area of 49 to 70 square miles (130 to 180 km 2). [2]
Topographic maps are also commonly called contour maps or topo maps. In the United States, where the primary national series is organized by a strict 7.5-minute grid, they are often called or quads or quadrangles. Topographic maps conventionally show topography, or land contours, by means of contour lines.
A point suitable for finding the reservation on a map is latitude/longitude. [15] A second, larger area of the Campo Indian Reservation is located to the east in the area around the community of Live Oak Springs. This area is shown on the US Geological Survey Live Oak Springs and Tierra del Sol, California 7.5-minute quadrangles.
DOQs produced by the USGS cover an area measuring 7.5-minutes longitude by 7.5-minutes latitude (the same area covered by a USGS 1:24,000-scale topographic map, also known as a 7.5-minute quadrangle) or 3.75-minutes by 3.75-minutes.
However, in this series, the lines of latitude are spaced 30 minutes apart and the lines of longitude are spaced 60 minutes, which is the source of another name for these maps; the 30 x 60-minute quadrangle series. Each of these quadrangles covers the area contained within 32 maps in the 7.5-minute series.
7350.7U Location Identifiers, The National Flight Data Center, Federal Aviation Administration ATPUBS, US Department of Transportation, September 1, 2005. Map: Stovepipe Wells, California 7.5-minute quadrangle, US Geological Survey, 1988. National Geographic Names Database, US Geological Survey, 1995. California Air Resources Board web site.
United States Geological Survey. 7.5 minute series topographic quadrangles; U.S. Geological Survey Geographic Names Information System: Bohemia River; General Highway Map of Cecil County, Maryland, 2005. Prepared in collaboration between Maryland State and United States Federal governments.
Ogilby (formerly, Oglesby) [3] is a ghost town in Imperial County, California, United States. [2] [4] Ogilby is located on the Southern Pacific Railroad 42 miles (68 km) east of El Centro, [3] and 3.8 miles (6.1 km) north of Interstate 8 on County Road S34. [5]