A major project aimed at improving flood management in the Sacramento region faces a setback. The U.S. Army Corps of Engineers on Thursday confirmed a “differential settlement” on the new weir extension, meaning that different parts of the structure are sinking unevenly. … The new section of weir would widen the structure by more than 1,500 feet and will automatically allow water to pour over when river levels reach a certain height. The Army Corps of Engineers said it expects the analysis of the structure to be complete by the end of September.

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• ABC10 (Sacramento, Calif.): Sacramento Weir Expansion hits unstable ground, could delay project