2015 Map of Llano Seco

About this map

Rancho Llano Seco dominates this portion of the Sacramento Valley, where complex hydrology defines the border between Glenn and Butte counties. The Sacramento River meanders along the western edge, creating landforms like Ryan Island and Hartley Island and feeding into backwaters such as The Lagoon. This 2015 survey illustrates a landscape of managed water and agricultural infrastructure, evidenced by the Odell Canal and the extensive network of sloughs, including Angel Slough and Campbell Slough, which thread through the low-lying terrain. Small settlements and staging points like Llano Seco and Dodgeland anchor the local road system, while the Llano Seco Unit Trail suggests a balance between working lands and conservation. The mapping of Perkins Lake and Eddy Lake provides a detailed record of the valley’s natural drainage patterns amidst established ranching and farming operations.