Question: How long is the river Tygart Creek is part of the watershed of via the Kanawha and Ohio?
Context: The Kanawha River Valley AVA is an American Viticultural Area located in the watershed of the Kanawha River in West Virginia, between the city of Charleston and the Ohio border.  The wine appellation includes 64000 acre in portions of Cabell, Jackson, Kanawha, Mason, and Putnam counties.  A portion of the western border of the AVA follows the Ohio River, but does not cross into Ohio.  The Kanawha River Valley AVA is part of the much larger Ohio River Valley AVA.  The hardiness zone is mainly 6b. The Tygart Valley River — also known as the Tygart River — is a principal tributary of the Monongahela River, approximately 135 mi long, in east-central West Virginia in the United States.  Via the Monongahela and Ohio rivers, it is part of the watershed of the Mississippi River, draining an area of 1,329 sqmi in the Allegheny Mountains and the unglaciated portion of the Allegheny Plateau. Tygart Dam — also known as Tygart River Dam — is a dam near Grafton in Taylor County, West Virginia, USA.  It regulates the waters of the Tygart Valley River.  Its storage reservoir is known as Tygart Lake.  Most of the lakeshore is occupied by Tygart Lake State Park and Pleasant Creek Wildlife Management Area. Leading Creek is a tributary of the Tygart Valley River, 17.4 mi long, in eastern West Virginia in the United States.  Via the Tygart Valley, Monongahela and Ohio rivers, it is part of the watershed of the Mississippi River, draining an area of 61 sqmi in the Allegheny Mountains.  The stream's entire course and drainage basin are in northern Randolph County. The Mississippi River is the chief river of the second-largest drainage system on the North American continent, second only to the Hudson Bay drainage system.  Flowing entirely in the United States (although its drainage basin reaches into Canada), it rises in northern Minnesota and meanders slowly southwards for 2320 mi to the Mississippi River Delta at the Gulf of Mexico.  With its many tributaries, the Mississippi's watershed drains all or parts of 31 U.S. states and 2 Canadian provinces between the Rocky and Appalachian Mountains.  The Mississippi ranks as the fourth-longest and fifteenth-largest river in the world by discharge.  The river either borders or passes through the states of Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana. Smithers Creek is a tributary of the Kanawha River, 7 mi long, in southern West Virginia in the United States.  Via the Kanawha and Ohio rivers, it is part of the watershed of the Mississippi River, draining an area of 18.1 sqmi on the unglaciated portion of the Allegheny Plateau.  The creek flows for its entire length in western Fayette County; its tributaries additionally drain a portion of eastern Kanawha County. The West Fork Little Kanawha River is a tributary of the Little Kanawha River, 48.1 mi long, in west-central West Virginia in the United States.  Via the Little Kanawha and Ohio rivers, it is part of the watershed of the Mississippi River, draining an area of 246 sqmi in a rural region on the unglaciated portion of the Allegheny Plateau.  By drainage area, it is the second-largest tributary of the Little Kanawha River, after the Hughes River. Tygart Creek is a tributary of the Little Kanawha River, 14.5 mi long, in western West Virginia in the United States.  Via the Little Kanawha and Ohio rivers, it is part of the watershed of the Mississippi River, draining an area of 51 sqmi on the unglaciated portion of the Allegheny Plateau. Tygarts Creek is a tributary of the Ohio River in northeastern Kentucky in the United States.  It is 88 mi long and drains an area of 339.6 sqmi .  Via the Ohio, it is part of the watershed of the Mississippi River.  Tygarts Creek is named for early Kentucky explorer Michael Tygart, who eventually drowned in the creek, somewhere near the mouth. Armstrong Creek is a tributary of the Kanawha River, 8.6 mi long, in southern West Virginia in the United States.  Via the Kanawha and Ohio rivers, it is part of the watershed of the Mississippi River, draining an area of 22.8 sqmi on the unglaciated portion of the Allegheny Plateau.  The creek flows for its entire length in western Fayette County; its tributaries additionally drain a small portion of eastern Kanawha County.
Answer: 2320 mi