Trump administration officials were in California on Tuesday to announce a $450 million loan for the Sites Reservoir project in Colusa County. The money will be used to build a tunnel to carry water from the Glenn-Colusa Canal to an existing reservoir, giving farmers on the west side of the Sacramento Valley more access to irrigation water. The 12-foot diameter tunnel, called an intertie, will also be used to transport water to and from Sites Reservoir after it is built, said Jim Watson, general manager of the Sites Reservoir Authority.