 The Solano Project first took shape in the 1940s after the formation of the Solano Irrigation District to manage the water resources of Putah Creek.On November 11, 1948 the Secretary of the Interior formally authorized the project, which would be constructed by the Bureau of Reclamation.The Bureau initially intended to incorporate the project as part of its larger Central Valley Project (CVP), which would manage the combined watersheds of the Sacramento and San Joaquin rivers.