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  1. Water Mission Area National Spatial Data Infrastructure Datasets
  2. Topographic Map image of the San Gorgonio Pass area, Riverside County, California.

Topographic Map image of the San Gorgonio Pass area, Riverside County, California.

Dates

Release Date
2004-11-08
Time Period
2001-11-01
Publication Date

Citation

Morita, A.Y. and Predmore, S.K., 2004, Topographic Map image of the San Gorgonio Pass area, Riverside County, California: U.S. Geological Survey data release, https://doi.org/10.5066/P9HSH2G4.

Summary

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This Digital Raster Graphic (DRG) was created using scanned U.S. Geological Survey 7.5-minute 1 to 24,000 scale maps georeferenced in Universal Transverse Mercator (UTM) grid. DRGs can be acquired with or without collar information for use in Geographic Information System (GIS) environment. Collarless DRGs can be edge matched creating a continuous collection of topographic maps.

Contacts

Point of Contact :
Allen H. Christensen, U.S. Geological Survey
Process Contact :
Andrew Y. Morita, U.S. Geological Survey
Originator :
Andrew Y. Morita, Steven K. Predmore
Metadata Contact :
U.S. Geological Survey
SDC Data Owner :
California Water Science Center
USGS Mission Area :
Water Resources

Attached Files

Click on title to download individual files attached to this item.

sgpwa_drg27_image.xml
Original FGDC Metadata
View 		9.96 KB application/fgdc+xml
sgpwadrg27.tif.gz 59.6 MB application/x-gzip
sgpwadrg27.tfw 222 Bytes text/plain
sgpwa_drg27.jpg thumbnail 63.66 KB image/jpeg

Purpose

In a GIS environment, a DRG can be used as a source or background layer to perform quality assurance on other digital products. DRGs can also be used as a source for the collection and revision of Digital Line Graphs (DLGs), Digital Elevation Models (DEMs), or Digital Orthophoto Quadrangles (DOQs). For this dataset, fifteen 7.5-minute 1 to 24,000 scale collarless DRGs were used to produce a hydrid digital file. The DRGs were edge matched, georeferenced, and re-projected in UTM coordinates to provide an image of the San Gorgonio Pass and surrounding area in Riverside County, California.
Representation of the data set
Representation of the data set

Map

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Communities

  • Model Data Management Function (MDMF)

Tags

Provenance

These data were originally released on the Water Mission Area National Spatial Data Infrastructure Node and were migrated to sciencebase.gov in 2023. These data were released prior to the October 1, 2016 effective date for the USGS's policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9HSH2G4

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