A reservoir’s water control manual is updated every 10 years after a multi-year evaluation to determine how to best update the control manual.

Corps of Engineer officials reviewed the existing water control manual and are proposing to revise operating parameters.

The California Department of Water Resources, which operates Oroville Dam, is required to make releases according to charts outlined in the dam’s manual.

The critical document that determines how much space should be left in Lake Oroville for flood control during the rainy season hasn’t been updated since 1970, and it uses climatological data and ...