2015 Map of Logan Ridge

About this map

Logan Ridge serves as the dominant north-south spine on this map, separating the western foothills of Antelope Valley from the flat expanse of the Sacramento Valley and Central Valley to the east. The landscape is a study in California's hydraulic engineering, where the Tehama-Colusa Canal and Glenn-Colusa Canal cut definitive lines through the terrain to manage water across the arid stretches of the valley floor. The boundary between Glenn Co and Colusa Co bisects the southern half of the sheet, providing a specific reference for local historians and land surveyors. Natural drainages like N Fork Logan Cr, Baker Slough, and Hunters Cr reveal the seasonal water patterns of the region, while a network of rural roads such as Co Road B and Co Road 69 establishes the grid of agricultural transport at the time of this 2015 survey.