Here are some of the other "@river" songs in the DT:

A PICTURE FROM LIFE'S OTHER SIDE
A REFRAIN OF THE RED RIVER PLANTATION
AIN' NO MO' CANE ON DE BRAZIS
ALL QUIET ALONG THE POTOMAC
ANNAN WATER
BANKS OF THE LITTLE EAU PLEINE
BANKS OF THE PLEASANT OHIO
BIG MUDDY
BINNORIE (TWO SISTERS)
CONGO RIVER
CONGO RIVER (2)
DE BOATMAN DANCE
DELAWARE RIVER
DON'T ASK WHAT A RIVER IS FOR
DOWN BY THE RIVER
DOWN BY TOMS RIVER
DOWN THE RIVER
DOWN THE RIVER (2)
DRAGGING THE RIVER
DRIVING LOGS ON THE CASS
EN MONTANT LA RIVIERE
ERIN'S FLOWERY VALE
ESSIQUIBO RIVER
FALL RIVER HOEDOWN (Lizzie Borden)
FLAT RIVER GIRL
FORTY SHADES OF GREEN
GOING DOWN THE RIVER
GOSPEL BOAT
HOOD RIVER ROLL ON
HUDSON RIVER STEAMER
IF THE RIVER WAS WHISKEY
IT'S THE SAME THE WHOLE WORLD OVER (3) (... when they fished 'er from the river...)
JOHN O' DREAMS
LA BELLE RIVIERE
LAMOILLE RIVER
LIGHT AT THE RIVER
LITTLE RIVER
LIVING ON THE RIVER
MICHAEL, ROW THE BOAT ASHORE
MIGHTY MISSISSIPPI
MIKE FINK
MONONGAHELA SAL
NEW RIVER TRAIN
OH, MY ROLLING RIVER
OH, THE WIND AND RAIN (The Two Sisters)
OLD FOLKS AT HOME (Swanee River)
ON THE BANKS OF THE OLD PEDEE
ONE MORE RIVER
PEACE I ASK OF THEE OH RIVER
PLAINS OF WATERLOO II
POOR BOY
PUSH BOAT
RAFTSMAN`S SONG
RAGING CANOE
RIO GRANDE
RIVER OF JORDAN
RIVER OF THE BIG CANOE
RIVERBOAT
RIVERS OF TEXAS
ROLL ON, SASKATCHEWAN
ROLLING DOWN THE RIVER
ROLLING TO CAIRO TOWN (ROUSTABOUT SONG)
ROW ON
SAILING DOWN MY DIRTY STREAM
SAILING DOWN MY GOLDEN RIVER
SHALL WE GATHER AT THE RIVER
SHANTY BOY ON THE BIG EAU CLAIRE
SHE LIVED BESIDE THE ANNER
STEAMBOAT BILL
STREAMS OF LOVELY NANCY
SWEET THAMES FLOW SOFTLY
THE BANKS OF SULLANE
THE BANKS OF THE BANN
THE BANKS OF THE DEE
THE BANKS OF THE LEE
THE DAM SONG
THE FERRYBANK PIPER
THE FERRYMAN
THE GRAND COULEE DAM
THE GREEN GRASSY SLOPES OF THE BOYNE
THE GREEN MOSSY BANKS OF THE LEA
THE GUM TREE CANOE
THE HIPPOPOTAMUS SONG (on the banks of the cool Shalimar)
THE JAM ON GERRY'S ROCKS
THE JAMESTOWN FLOOD
THE MAID OF MOURNE SHORE
THE MEETING OF THE WATERS (original)
THE MEETING OF THE WATERS OF HUDSON & ERIE
THE MOTHER'S MALISON (Clyde's Water)
THE OLD SHAWNEE
THE RAFTSMEN
THE RAGING CANAL (TWO IN THE MIDDLE)
THE RIVER
THE RIVER LEA
THE ROAD BY THE RIVER
THE ROSE (Some say love, it is a river ...)
THE TOMBIGBEE RIVER (GUM TREE CANOE)
THE WILD RIPPLING WATERS
THIS OL' RIVERBOAT
WEEL MAY THE KEEL ROW
WHERE THE FRASER RIVER FLOWS
WHERE THE RIVER SHANNON FLOWS
WHITE WATER
WILD MUSTARD RIVER
YE BANKS AND BRAES (O' Bonny Doon)

and not from this DT search, but I could add
"Ferry 'Cross the Mersey"
and "Somos El Barco"