2011 Map of Poison Creek

About this map

Mahogany Ridge and the volcanic landscape of Devils Garden define this high-desert portion of Harney Valley as it appeared in 2011. The drainage patterns are dominated by the Silvies River, which meanders through the southwestern corner alongside Fivemile Slough. The map documents a landscape of large-scale ranching and water management, evidenced by named properties such as Thousand Springs Ranch and Hart Ranch, and the presence of Arntz Reservoir and Paiute Reservoir. Transportation in this area relies on local routes like Curry Garden Rd and Lowe Pine Rd, which connect the scattered homesteads. Notable geological features including Arrowhead Butte, Fenwick Canyon, and Devine Canyon illustrate the dramatic relief that breaks up the basin floor.