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2020 Map of Owyhee Dam

Name: 2020 Topographic Map of Owyhee Dam
Creator: U.S. Geological Survey
Published: 2020
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2020

About this map

Owyhee Dam and the expansive reach of Lake Owyhee define this arid Malheur County landscape, where sophisticated water management infrastructure meets a labyrinth of canyons and gulches. The complex irrigation and transit system is marked by numerous landmarks, including Owyhee Siphon, Snively Siphon, and a series of numbered bores such as Tunnel Number 1 and Tunnel Number 3. These features reflect the scale of engineering required to move water through the high desert.

Thermal activity is evident at Hot Spring and Snively Hot Spring along the Owyhee River, while the terrain is punctuated by distinctive geological formations like Balancing Rock and Pinnacle Point. Local water storage is dispersed across the rangeland through sites such as Chaney Reservoir, Oke Reservoir, and the Blackjack Butte Reservoir, supporting the agricultural and ranching operations that utilize the extensive road network of Owyhee Lake Rd and Upper Tunnel Rd.