2017 Map of Henley Basin

About this map

The Snake River defines the border between Baker County, Oregon, and Washington County, Idaho, carving a deep canyon through this high-desert landscape. This 2017 survey shows the river in its modern regulated state, forming the Brownlee Reservoir as it flows northward. The topography is dominated by steep drainages and family-named landmarks like Billy Gulch and Ryan Gulch, which cut into the canyon walls from the west. The eastern portion of the map is marked by the Henley Basin, a relatively sheltered area where the local road network, including Henley Basin Rd and Rock Creek Rd, follows the natural contours of the land. High-elevation streams like Little Rock Cr and Perkins Cr feed into the river system, illustrating the complex watershed of this border region. The map preserves the specific locations of remote access routes like Mineral Rd, essential for navigating the ridges above the water.