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2011 Map of Ninemile Coulee East

Name: 2011 Topographic Map of Ninemile Coulee East
Creator: U.S. Geological Survey
Published: 2011
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2011

About this map

Milk River dominates this north-central Montana landscape, carving a sinuous path through the plains of Hill County. The drainage patterns are defined by a series of significant erosional features, including Roundup Coulee, Spring Coulee, and Sevenmile Coulee, which channel runoff toward the river valley. The southern portion of the sheet reveals the northern reaches of the Fresno Reservoir, an impoundment that has fundamentally altered the local riparian environment and hydrology.

Evidence of local water management is anchored by the Orville Number 1 Dam, while the surrounding terrain remains largely defined by the natural coulees like Ninemile Coulee and Archie Coulee. The map illustrates the stark contrast between the intricate, marshy shorelines of the reservoir and the high, dry draws that characterize this part of the Missouri River watershed. This survey captures the intersection of natural prairie topography and 20th-century water infrastructure.