| ACD | ARCADIA HARBOR, MI |
| AG | ALLEGHENY RIVER |
| AI | ATLANTIC INTRACOASTAL WATERWAY |
| AKU | AKUTAN HARBOR |
| AL | ALABAMA-COOSA RIVERS |
| ALP | ALPENA HARBOR |
| AP | APLCHCLA/CHATTAHO/FLINT RIVERS |
| APB | APALACHICOLA BAY FL |
| ASH | ASHLAND HARBOR |
| AUS | AUSABLE HARBOR, MI |
| BBH | BIG BAY HARBOR, MI |
| BCH | HARBOR BEACH |
| BDN | LITTLE BAY DE NOC |
| BEL | BELLE RIVER, MI |
| BET | KUSKOKWIM RIVER |
| BGN | SHEBOYGAN HARBOR |
| BH | BEAUFORT HARBOR |
| BI | BOGUE INLET |
| BLB | BAYOU LA BATRE |
| BLX | BILOXI HARBOR |
| BMH | BEAUFORT INLET/MOREHEAD CITY HARBOR |
| BOL | BOLLES HARBOR, MI |
| BON | BON SECOUR RIVER |
| BOY | CHEBOYGAN HARBOR |
| BR | BLACK ROCK CH/TONAWANDA HARBOR |
| BRN | BURNS HARBOR |
| BRP | BLACK RIVER, MI (PORT HURON) |
| BRU | BLACK RIVER, MI (UPPER PENINSULA) |
| BSB | BURNS SMALL BOAT HARBOR |
| BSH | BIG SANDY RIVER |
| BW | BLACKWARRIOR/TOMBIGBEE RIVERS |
| BYF | BAYFIELD, WI |
| BYT | BAY PORT HARBOR, MI |
| CAD | BAYOU CADDY |
| CAL | CALUMET HARBOR |
| CAR | CALUMET RIVER |
| CAS | CASEVILLE HARBOR, MI |
| CBI | CAROLINA BEACH INLET |
| CED | CEDAR RIVER, MI |
| CH | CHICAGO RIVER |
| CHA | CHATTAHOOCHEE RIVER |
| CHH | CHICAGO HARBOR |
| CHI | ANCHORAGE BAY |
| CHL | CHENA LAKE |
| CHP | CHIPPEWA HARBOR, MI |
| CHR | CHENA RIVER |
| CI | CLINCH RIVER |
| CLI | CLINTON RIVER, MI |
| CN | CANAVERAL HARBOR |
| CO | COLUMBIA RIVER |