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1974 Map of Iowa Flats

Name: 1974 Topographic Map of Iowa Flats
Creator: U.S. Geological Survey
Published: 1977
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1977

About this map

The Hanford Works dominate this mid-1970s landscape in Benton County, illustrating a high-security research and environmental monitoring environment. The terrain is defined by the significant rise of Rattlesnake Mountain and the Rattlesnake Hills, which host specialized installations including the Radio Facility Hartman (3624) Radio Telescope, various Telescopes, and a Heliport. This era of the site's history is further evidenced by the Ecology Reserve Headquarters located near the Iowa Flats.

Water resources in this arid valley are scarce, marked by isolated points like Sam White Spring and the drainage of Cold Creek Valley. A network of restricted access routes, including the Army Loop Road and numerous jeep trails, connect a series of test wells and radio facilities. This survey provides a technical record of scientific and governmental land use before modern decommission or expansion activities changed the facility's footprint.