Superior Lake, south shore.. Thunder Bay, Mich... West Neebish Channel, Mich.. Wyandotte Channel, Detroit River, Mich., examination and survey. Operating and care of lock and dam. Yankton, S. Dak. See Missouri River. Yazoo River, Miss.: Improvement above mouth.. Y. Improvement of mouth, including Vicksburg Harbor.. Yellow Mill Pond, Bridgeport, Conn. See Bridgeport Harbor. Yellowstone National Park, improvement of... Yellowstone River, Mont., examination and survey. York River, Va., improvement of...... 1, 61, 1163 1, 91, 1192, 1193 1, 278; п, 1402 1, 233; п, 1347 1, 813; 1, 2298 1, 317; п, 1456 York Spit, Chesapeake Bay, Va., shoals opposite. See Patapsco River channel Youghiogheny River, Pa., improvement of.. Yuba River, Cal. See California Débris Commission. .... I, 752; п, 2146 |