IMPORTANT GAGES-MIDDLE AND UPPER MISSISSIPPI RIVER TRIBUTARIES--Continued Illinois Waterways-Continued Marseilles Canal. Chicago Sanitary & Ship canal..| Lockport Lock (lower).. Lockport Lock (upper). 291.1 558.00 1943 23.1 1908 Do. 3 557.94 (4) 24. 6 (6) Harbor, Ill. (Riverside). Controlling Works Lock, Chicago 327.3 3 579.88 (4) 2.6 Harbor, Ill. (Lakeside). CCCCC C CC C 16.0 548.98 12, 510 1929 16.2 (1934} -1.4 1915 Do. Corps of Engrs., War Dept., U. S. W. B. and U. S. G. S. U. S. W. B. 1916 IMPORTANT GAGES-MIDDLE AND UPPER MISSISSIPPI RIVER TRIBUTARIES-Continued North River. North Fabius River. Pope Creek. 2 Records in H. Doc. 263, 59th Cong., 1st sess. 3 Mean tide, New York datum. 4 Assumed high water. 5 Miles above Ohio River. • Lake Michigan low-water datum, 578.5 feet above mean tide, New York datum. 7 Gage located at mile 327.1 prior to completion of controlling works lock. 8 Records are not continuous from date of establishment. Present zero, 586.11, 1929 adjustment. 10 793.68 prior to Jan. 1, 1934, at same location. 11 0.8 mile below present gage. 12 Lowest observed; low-water records incomplete. 13 1941 mileage. 14 Distance from Mississippi River. 15 Gage zero raised 30 feet June 1940 (stages shown are in present gage datum). 16 1879, 1887, and 1891 also. 17 Exact date not known but occurred after 1931. |