$165,468,506 9,426 18,968,890 $63,723,473 A11 navigation areas - Total ----------------- -- 15,163,117 Atlantic and Gulf Coasts area ---------------- -- 646 ,522 8,504,03717,591,7031,932 4,403,227 23,223,215 1,4702,464,933 3,701,660 102,09019,552,753 Great Lakes area ----------------------------- -- 434,549 61,745,175 97,479,610 3,701 7,130,437 22,307,032 Mississippi River and Tributaries ... Show more $165,468,506 9,426 18,968,890 $63,723,473 A11 navigation areas - Total ----------------- -- 15,163,117 Atlantic and Gulf Coasts area ---------------- -- 646 ,522 8,504,03717,591,7031,932 4,403,227 23,223,215 1,4702,464,933 3,701,660 102,09019,552,753 Great Lakes area ----------------------------- -- 434,549 61,745,175 97,479,610 3,701 7,130,437 22,307,032 Mississippi River and Tributaries area Show less