Lake Erie and the Ohio River.
Washington
Washington DC is not a state.
Michigan river =========== No part of the Canada-US border is called the "Michigan River." Rivers forming part of the Canada-US border include: Rainy River, Pigeon River, St Marys River, St Clair River, Detroit River, Niagara River, St Lawrence River, St John River, St Croix River.
Yes, Maine is a very rainy state especially in the summer. It rains single day there in the summer. In the winter they get a lot of snow.
Sell the land to another state? No, the boundries of the US States are well established and won't be changed.
Nilgiri
California is an expansive state with many major rivers. A few examples are: The Klamath River in the north, the Elk River a little to the south, the Sacramento River, the Santa Maria River, and The Los Angeles River.
The major rivers in Indiana include the Wabash River, which flows through the west-central part of the state and is the longest river entirely within Indiana. The White River runs through central Indiana, passing through Indianapolis. Other significant rivers include the Ohio River, forming the southern border with Kentucky, and the Tippecanoe River, located in the north-central region of the state. These rivers play important roles in the state's ecology, economy, and recreation.
It is very rainy and humid
The longest rivers in Iowa are the Missouri River and the Mississippi River, which form the state's western and eastern borders, respectively. The Des Moines River is the longest river entirely within Iowa, flowing approximately 525 miles. Other significant rivers include the Cedar River and the Iowa River, both of which contribute to the state's extensive river system.
The state is bordered by the Montreal River; Lake Superior and Michigan to the north; by Lake Michigan to the east; by Illinois to the south; and by Iowa and Minnesota to the west. The state's boundaries include the Mississippi River and St. Croix River in the west, and the Menominee River in the northeast.