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Table 4-3 Lock Characteristics and Delays on Rivers with 5,000 or More Lockages: 2000, 2010, and 2015

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  Total Lockages (2015) Average Age of Locks (2015) Percent Commercial Vessels (2015) Average Delay in Minutes Percent of Vessels Delayed
2000 2010 2015 2000 2010 2015
All Waterways 595,089 60 59 64 80 143 35 36 48
Ohio River 104,487 53 88 52 97 140 31 34 45
Mississippi River 99,339 74 46 90 81 109 20 19 42
Gulf Intracoastal Waterway 38,811 53 98 58 65 164 78 84 91
Illinois Waterway 24,941 81 88 127 53 143 41 29 65
Monongahela River 22,784 71 76 12 11 25 16 18 27
Tennessee River 22,370 69 47 209 122 432 24 24 43
Tennessee Tombigbee Waterway 19,403 33 64 9 3 19 38 10 16
Arkansas River 18,351 47 84 11 13 12 35 23 25
Chicago River 11,006 78 33 5 5 17 1 1 79
Caloosahatchee River 9,509 56 11 5 2 2 26 16 8
Allegheny River 8,898 85 12 8 4 13 7 3 9
Kanawha River 8,260 64 81 52 20 72 34 23 37
Columbia River 7,088 48 90 32 30 24 85 90 77
St. Mary's River 5,417 80 88 27 16 29 26 19 41
Cumberland River 5,236 55 53 16 18 65 13 12 23
Calcasieu River 5,104 47 1 10 14 18 37 45 33

NOTES: A lockage is the movement through the lock by a vessel or other matter. Commercial vessels include all vessels operated for purposes of profit and include freight and passenger vessels.

SOURCE: United States Army Corps of Engineers, Navigation Data Center, Lock Use, Performance, and Characteristics, (Alexandria, VA: annual issues). Available at www.navigationdatacenter.us/ as of May 2016.

Updated: Saturday, May 20, 2017