I am listing rivers that are tributaries, and their nav. lengths.

Here goes:

*****MISSISSIPPI RIVER******

Des Moines River: Nav,until Des Moines.
Salt River: Nav, until Clarence Canon Dam.
Cuivre River: Nav, until Chain Of Rocks; which is a boulder in the
river.
Meramec River: Nav, until Piney Park.(Big River: Nav, until Byrnes
Mill. Bourbeuse River: Nav, until Union.)
Kaskhaskia River: Nav, until Fayetteville.
Big Muddy River: Nav, until Crab Orchard Dam.
Obion River: Nav, its entire length.
Forked Deer River: Nav, its entire length.
Hatchie River: Nav, until Bolivar.
Loosahatchie River: Nav, until US 51.
St. Francis River: Nav,until Kennett.
Yazoo River: Nav, entire length.
Big Black River: Nav,until US 61.

*****MISSOURI RIVER********

Gasconade: Nav,until Waynesville.
Osage River: Nav, until Bagnell Dam.


***** ILLINOIS RIVER*******

Des Plaines River: Nav, until Des Plaines.
Kankakee River: Nav, until Kankakee.


***** OHIO RIVER*********

Wabash River: Nav,until Terre Haute.
Tennesee River: Nav,until Knoxville.
Cumberland River: Nav,until Bowling Green.
Kentucky River:Nav, for 80 RM.
Scioto River: Nav,until Columbus.
Allegheney: Nav, until Dam.


******WHITE-BLACK RIVERS******

Black River: Nav, until Pocahontas.
Current River: Nav,until Big Spring.

****** ARKANSAS RIVER*********

Illinois River: Nav, until Tenkiller Lake.
Neosho River: Nav, until Cold Spring dam.
Canadian River: Nav,until Dam.
Verdigris River: Nav,until Caney River.
Cimarron: Nav, for 10 RM.


that is all I can list, OBTW, I am not a troll. the boat used primarily
for these rivers, was a boston whaler. I own a hinkley jetyacht, named
KIWASIS.