2018 Map of Tisdale Weir

About this map

Sutter Basin is defined by its complex water management infrastructure, most notably the prominent Tisdale Weir and the extensive Tisdale By-Pass. These features, alongside the Sacramento River and Wadsworth Canal, illustrate the engineering required to manage the flood-prone agricultural lands of the Central Valley. The landscape is a network of irrigation and transport, where settlements like Progress, Tisdale, and Joesphine are connected by a rigid grid of rural roads such as Oswald Rd and Robbins Rd. This 2018 survey also identifies localized landmarks like Moronis Airport and several small water bodies including Purdue Lake and Sills Lake. On the western edge, the river forms the boundary between Sutter and Colusa Counties, wrapping around Grand Island. The map reflects a highly controlled agricultural environment where natural sloughs, like Wilkins Slough, persist alongside modern reclamation efforts.