Search results
Results from the WOW.Com Content Network
A quadrangle is defined by north and south boundaries of constant latitude (which are not great circles so are curved), and by east and west boundaries of constant longitude. 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 ...
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.
Date/Time Thumbnail Dimensions User Comment; current: 20:09, 21 March 2023: 584 × 1,426 (640 KB): Jengod: Uploaded a work by USGS from USGS 7.5-minute image map for Point Arguello, California Point Pedernales ...
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.
The data was entered in spreadsheet format or in ESRI shapefiles and submitted via e-mail to the USGS National Geospatial Technical Operations Center(s) in Denver, Colorado, and Rolla, Missouri. During the registration process, prospective volunteers submitted a list of the 7.5 minute quadrangle maps on which they
Ogilby is defined by the US Geological Survey as a populated place at 356 feet (109 m) AMSL elevation. NAD27 latitude and longitude are listed at on the "Ogilby, California" 7.5-minute quadrangle (map). [6]
Map produced with DLG data. DLGs are normally derived from USGS maps or USGS map-related sources. DLGs are distributed at three different scales: large-scale, which normally correspond to the USGS 7.5- by 7.5-minute, 1:24,000 and 1:25,000-scale topographic quadrangle map series, 1:63,360-scale for Alaska and 1:30,000-scale for Puerto Rico; intermediate scale, which are derived from the USGS 30 ...
Sidneys Knob is part of a bifurcated ridgeline as seen in the topographic map below. [1] ... PA 7.5 Minute USGS Topographic Quadrangle, 1984 ed. showing the location ...