The Fremont Weir Adult Fish Passage Modification Project, which began modified operations in January of 2019, has successfully allowed thousands of migrating fish to pass between the Sacramento River and Yolo Bypass in its first year of operations.

Stream gages are critical for managing California’s water resources. The devices help with early flood warning and generate important data used by the Department of Water Resources (DWR), and other state and federal agencies.

Lake Oroville Community Update for July 3, 2020.

Seven nesting pairs of bald eagles who have made the Oroville area their home are once again raising families. Environmental scientists from the Department of Water Resources (DWR) Oroville Field Division have been eagerly watching the development of the nine new eaglets – an increase from the eight eaglets spotted in 2019.

Read the Lake Oroville Community Update for June 26, 2020.

California’s lakes, rivers, and streams are a great place to cool down as the temperatures heat up. However, as the warmer weather approaches, so does algal bloom season on our waterways.

California has the most variable weather conditions in the United States, often varying between extremes such as drought and flood. Our ability to forecast variable weather conditions well in advance is a driving factor in how water managers maximize the benefits and minimize the hazards of each storm.

After being docked for three months due to COVID-19 restrictions, the Department of Water Resources (DWR) relaunched its research vessel monitoring program, the Sentinel.

Lake Oroville Community Update for June 19, 2020.

DWR has submitted a (revised) Department of the Army permit application pursuant to Section 404 of the Clean Water Act and Section 10 of the Rivers and Harbors Act (Section 404 permit application) to the U.S. Army Corps of Engineers (USACE) to request authorization for the proposed Delta Conveyance Project activities in waters of the United States. ...