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Name & Description: Duluth-Superior, MN and WI- Section Included: Superior Bay and its tributaries, St. Louis Bay and St. Louis River, and Allouez Bay. Controlling Depth: 32 feet in lake approaches, diminishing to a minimum of 20 feet in certain inner channels; there are numerous 1-2 foot shoals scattered in portions of the Duluth and Superior Harbor Basins. Project Depth: 32 feet in lake approaches; 27 feet in Duluth and Superior Harbor Basins, superior front channel, and in ore-channel routes through north  and south channels to D. M. & I. R. R.Y. ore docks; 27 feet in Howards Bay and Allouez Bay; 23 feet in remaining portion of south, upper, and Minnesota channels to Hallet Dock No. 6; and 20 feet from thence to northerly end of Clough Island. Navigation Season: April 3 to January 11.
Time: CY2012
Traffic Type: All Traffic Types (Domestic & Foreign)
Measure: Trips (#)
  All Vessel Types Self-Propelled Dry Cargo Self-Propelled Tanker Self-Propelled Towboat Non-Self Propelled Dry Cargo Non-Self Propelled Tanker Liquid barge
  All Traffic Directions Receipts Shipments All Traffic Directions Receipts Shipments All Traffic Directions Receipts Shipments All Traffic Directions Receipts Shipments All Traffic Directions Receipts Shipments All Traffic Directions Receipts Shipments
All Drafts 2,901 1,467 1,434 1,757 893 864 0 0 0 566 285 281 567 283 284 11 6 5
    0-5 ft. 496 246 250 2 0 2 0 0 0 2 0 2 492 246 246 0 0 0
    6-9 ft. 487 243 244 0 0 0 0 0 0 486 243 243 1 0 1 0 0 0
    10-12 ft. 4 2 2 0 0 0 0 0 0 4 2 2 0 0 0 0 0 0
    13-14 ft. 4 1 3 0 0 0 0 0 0 2 1 1 1 0 1 1 0 1
    15-17 ft. 42 19 23 14 3 11 0 0 0 19 10 9 0 0 0 9 6 3
    18-20 ft. 367 278 89 347 265 82 0 0 0 7 5 2 12 8 4 1 0 1
    21-23 ft. 519 426 93 503 416 87 0 0 0 5 4 1 11 6 5 0 0 0
    24-26 ft. 609 249 360 521 206 315 0 0 0 40 20 20 48 23 25 0 0 0
    27-29 ft. 373 3 370 370 3 367 0 0 0 1 0 1 2 0 2 0 0 0
    30-32 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    33-35 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    36-38 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    39-40 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    41 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    42 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    43 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    44 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    45 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    46 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    47 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    48 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    49 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    50 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    51 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    52 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    53 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    54 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    55 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    56 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    57 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    58 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    59 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    60 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    >60 ft. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0