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2023 Map of Iowa Flats

Name: 2023 Topographic Map of Iowa Flats
Creator: U.S. Geological Survey
Published: 2023
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2023

About this map

Hanford Reach National Monument occupies the northern half of this terrain, where the arid landscape is defined by the sweeping Cold Creek Valley. This high desert environment is punctuated by significant relief, notably Rattlesnake Mountain and the Rattlesnake Hills, which dominate the southwestern portion of the map. These landmarks reflect the geologic character of the Columbia Basin, offering a clear view of the ridgelines that separate the valley floor from higher elevations like Goose Egg Hill.

In the southeast, the Saddle Mountain National Wildlife Refuge borders the eponymous Iowa Flats. While human infrastructure is sparse, the presence of Ale Rd and isolated water sources such as Sam White Spring indicate the long-standing importance of water management and access in this remote portion of Benton County. The map provides a detailed study of the natural drainage patterns of Cold Creek as it moves through the dry gaps of the surrounding hills.