Fremont Weir and the Confluence of the Sacramento and Feather Rivers by Zeke Lunder

This image shows three lynchpins of the Sacramento River's flood control system - Fremont Weir, the Yolo Bypass, and the Natomas Cross Canal.

At high flows, the river spills over the Fremont Weir (the concrete-topped levee in the center-right of this image) and flows into the Yolo Bypass. In the center left of the image, the Natomas Cross Canal shunts water from Sierra Nevada Foothill tributaries including Dry Creek, Arcade Creek, and Pleasant Grove Creeks around the Natomas Basin.

The Yolo Bypass (upper right) gathers floodwaters from the Sacramento River, the Colusa Basin Main Drainage Canal (far right), Cache and Putah Creeks, returning them to the Sacramento River below the levees of the Sacramento Deep Water Shipping Channel, near Rio Vista.