The Chemung River at Elmira, New York
|States||New York, Pennsylvania|
|Counties||Steuben, NY, Chemung, NY, Bradford, PA|
|- left||Cohocton River|
|- right||Tioga River|
|- location||Painted Post, NY|
|- elevation||935 ft (285 m) |
|- location||Sayre, PA|
|- elevation||722 ft (220 m) |
|- coordinates||Coordinates: |
|Length||46 mi (74 km)|
|Basin||2,506 sq mi (6,491 km2) |
|Discharge||for Chemung, NY|
|- average||2,623 cu ft/s (74 m3/s) |
|- max||65,400 cu ft/s (1,852 m3/s)|
|- min||113 cu ft/s (3 m3/s)|
The Chemung River (// shə-MUNG) is a tributary of the Susquehanna River, approximately 46.4 miles (74.7 km) long, in south central New York and northern Pennsylvania in the United States. It drains a mountainous region of the northern Allegheny Plateau in the Southern Tier of New York. The valley of the river has long been an important manufacturing center in the region but has suffered a decline in the late 20th century.
The Chemung River is formed near Painted Post in Steuben County, just west of Corning by the confluence of the Tioga River and Cohocton rivers. It flows generally east-southeast through Corning, Big Flats, Elmira, and Waverly. It crosses into northern Pennsylvania before joining the Susquehanna River approximately 2 miles (3 km) south of Sayre.
Most of the valley is cut into Devonian age shale, sandstone, and limestone. The hilltops are rounded by glaciation. The tributaries, particularly the Cohocton River, have captured some of the former Genesee River drainage, due to terminal moraines that filled some valley areas and diverted streams.
In 1779 during the Revolutionary War, American troops of the Sullivan Expedition defeated a combined force of Iroquois, Tories and British at the Battle of Newtown along the river southeast of Elmira. The victory opened the way for Sullivan to systematically destroy Iroquois villages and settlements throughout their homeland of central and western New York.
The construction of the Chemung Canal which was completed in 1833 between the Chemung and the southern end of Seneca Lake allowed the shipment of Pennsylvania anthracite coal, lumber and agricultural products to the Erie Canal system, leading to the growth of Elmira as a regional center of manufacturing. The canals were rendered obsolete by the coming of the railroads in the late 1840s and 1850s. The community of Corning is renowned as the site of Corning Incorporated, formerly the Corning Glassworks.
In the later 20th century the valley, along with the rest of the Rust Belt, suffered economic decline with industrial restructuring, the loss of jobs to other regions and countries, and changes in the economy. Although the river is no longer used for regular transportation, it has become a popular destination for recreational canoeing and fly fishing, in particular for smallmouth and largemouth bass, trout, rock bass, sunfish, bluegill, and carp.
New York State Route 17 follows the valley of the river for much of its course.
The river has had periodic heavy flooding throughout its recorded history. In June 1972 the remnants of Hurricane Agnes stalled over the New York-Pennsylvania border, dropping up to 20 inches (510 mm) of rain into the Chemung Valley, which was among the areas worst hit by the resultant flooding. The flooding left widespread areas of the communities of Corning, Big Flats, and Elmira under water and destroyed many bridges.
Elmira lost three of the four downtown road bridges that existed at the time (Madison, Main and Walnut streets) as well as the Erie Railroad bridge. The Lake Street bridge was the only bridge not damaged by the flood and was reopened to traffic. Since it was the only bridge, a "Red Ball Express" was created that allowed only one lane of traffic in each direction across the bridge. This created a traffic nightmare that was relieved when temporary repairs were done on the Madison Avenue bridge, which allowed it to be reopened to traffic. Lake Street bridge was made southbound only, and Madison Avenue bridge was made northbound only.
Upstream, Fitch's Bridge in West Elmira was washed out. Downstream, the Lowman Crossover and White Wagon bridges were washed out. The White Wagon bridge, near what is now the Wilawana exit of the Southern Tier Expressway, was never rebuilt, leaving Chemung County Route 56 split into two sections and resulting in the creation of the aforementioned Wilawana exit, to allow traffic to access the now cut-off portion of CR-56.
The Chemung River begins near Painted Post, New York, by the convergence of the Cohocton, Canisteo and Tioga rivers. The area was referred to as Concanoga, or the land of three rivers, by the Seneca who lived in the area.
- Google Earth elevation for GNIS coordinates.
- U.S. Geological Survey Geographic Names Information System: Chemung River
- Water Resources Data New York Water Year 2003, Volume 3: Western New York, USGS
- U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed August 8, 2011
- Pfiffer, Jim. "The Chemung River Connects Us". Discover New York State. Retrieved 2015-07-17.
- "This Day in History: Battle of Chemung, or Newtown, New York". History.com. Retrieved 2015-07-17.
- Williams, Glenn F. "The Battle of Newtown, 29 August 1779". Revolutionary War Archives. Retrieved 2015-07-17.
- Janowski, Diane. "History: Early accounts paint picture of Chemung Canal". Star Gazette Newspaper. Retrieved 2015-07-17.
- Seely, Hart (2012-06-16). "Hurricane Agnes still stirs up a flood of memories". Syracuse.com. Retrieved 2015-07-17.
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