The Kaskaskia River (325 miles) is the longest entirely within the state, although the Illinois River has a larger drainage area. The Kaskaskia was once 10 miles longer, but its original lower watercourse became part of the Mississippi River after flooding in 1881, cutting off the town of Kaskaskia on the western bank.
The Father of All Waters.
the mighty Mississippi River
The Charles River is the longest river wholly within Massachusetts.
It has a length of 3,160 kilometres and is the fourth largest river system in South America and the longest river wholly within Brazil.
The Mississippi River is the largest river and it is the western border of Illinois. The Ohio and Wabash Rivers are the southern border of Illinois. The Illinois River is the largest internal river in Illinois.
The Illinois River is entirely contained within the State of Illinois.
The Aare is a river which is wholly within the country of Switzerland.
The River Thames is wholly within England although there is another river by that name in Canada.
The River Severn - but a small part of it is in Wales. The River Thames is the longest wholly within England.
The Tennessee River is the largest that passes through the State. The Duck River is the largest river contained within the State
The River Severn is the longest waterway in Britain by about five miles. However, part of it is within Wales so the longest waterway wholly within England is the River Thames.
I Think Atlantic(: Hampton Roads, Chesapeake Bay, the river and it's tributaries are wholly contained within the state of Virginia USA.
The major rivers in Illinois are the Illinois River, Mississippi River, Ohio River and Wabash River.
Yes the Illinois River is healthy!