Loading map...

1995 Map of Bologna Basin

Name: 1995 Topographic Map of Bologna Basin
Creator: U.S. Geological Survey
Published: 1998
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1998

About this map

Bologna Basin and the surrounding drainages of the Umatilla National Forest dominate this mid-1990s survey of Grant County. The landscape is defined by the deep incisions of Bologna Canyon and Portuguese Canyon, which channel water toward the North Fork John Day River. This confluence point represents a critical hydrological junction in the high desert, where the river's path is reinforced by a levee system near BM 1950.

The presence of numerous stock ponds and named water sources like Tommy Cork Spring and Putnam Spring indicates a landscape heavily utilized for grazing. To the south, the terrain levels out into the Alkali Flats, contrasting with northern landmarks such as Ant Hill and Thorn Spring Butte. A network of 4WD tracks and the historical Wagon Gulch suggest a history of access through this remote portion of the John Day River basin.