2021 Map of Monticello Dam

About this map

The eastern foothills of the Vaca Mountains meet the vast floor of the Sacramento Valley in this detailed 2021 survey of the California landscape. The city of Winters sits at the edge of the valley floor, where the terrain transitions from the steep ridges of Blue Ridge and Crane Ridge to the alluvial plains. This area is defined by its complex drainage network, where seasonal waterways like Chickahominy Slough and Union School Slough carry runoff toward the valley, and the prominent Putah Creek flows through Devils Gate below the massive reservoir of Lake Berryessa.