2021 Map of Logan Ridge

About this map

Logan Ridge dominates the center of this landscape, forming a prominent topographical divide between the lowlands of the Sacramento Valley to the east and the Antelope Valley to the west. This 2021 study illustrates a sophisticated water management network vital to the Central Valley agricultural economy, anchored by the massive Tehama-Colusa Canal and the Glenn-Colusa Canal. The eastern portion of the map is characterized by a series of parallel watercourses including Baker Slough, Logan Creek, and North Fork Logan Creek as they drain toward the valley floor.