Rapids on the creek by Vanhornesville
|Region||Central New York Region|
|Source||Un-named Marshy Field|
|⁃ location||Van Hornesville, New York|
|⁃ elevation||1,360 ft (410 m)|
|Fort Plain, New York|
|295 ft (90 m)|
|Length||18.6 mi (29.9 km)|
|Basin size||61.3 sq mi (159 km2)|
|⁃ location||Fort Plain|
|⁃ minimum||.6 cu ft/s (0.017 m3/s)|
|⁃ maximum||24,600 cu ft/s (700 m3/s)|
|⁃ left||Loyal Creek,|
|⁃ right||Otstungo Creek|
|Waterfalls||Creamery Falls, Van Hornesville Falls|
Otsquago Creek is a river that enters the Mohawk River in Fort Plain, New York. Otsquago is a Mohawk Indian word meaning "under the bridge," probably referring to an early bridge of felled trees along the creek, a way of making small bridges. It is also referred to as Otsquage on old maps, which is an Indian word for "healing waters".
The source of the Otsquago Creek is about 12 miles southeast from its outlet, 1,360 feet above sea level and about 1,000 feet above the Mohawk River, in a marshy field by Van Hornesville, New York. Creamery Falls and Van Hornesville Falls are two waterfalls on the creek near Van Hornesville.
Before European colonization, the Iroquois Indians occupied the area around the creek. Many Indian villages were built along the creek. One of these villages was called Otstungo and is located on a triangular piece of land between the Otstungo Creek and Otsquago Creek, by the mouth of Otstungo Creek. The village was only accessed from the south side due to steep cliffs on the other sides. Many stone axes, pestles, arrowheads, spears, bone implements and pipes have been excavated at this village. A large pine was cut from this location that measured nearly 7.5 feet (2.3 m) across the butt, and produced 14,000 feet (4,300 m) of lumber. The Indians referred to sulpher and iron springs near Van Hornesville as "Otsquage" which translates to "healing waters", as they attributed them to having great healing and medicinal qualities.
John Concuponk was an Oneida Indian who lived in his wigwam along the creek by Starkville with his wife Canadalacadoa. Upon his death he was buried on the hill behind his wigwam. Then Peter P. Murphy, who was the resident physician in Southville, removed Concuponk's body for his students to study. His wife soon found out what had happened, she attempted to murder the doctor. After she tried this, she was taken to the reservation in Oneida.
In 1794, Mr. VanHorne opened a store in present-day Van Hornesville. By 1800, there was a cloth fulling and finishing mill on the creek. By 1814, there was a carding mill, saw mill, fulling mill, and clover hulling mill in operation halfway between Van Hornesville and Southville. In 1836, Elias Braman and Company built a cotton mill on the creek by Van Hornseville.
The Otsquago Creek's 61.3-square-mile (159 km2) watershed accounts for 1.77% of the total Mohawk River watershed. Where the creek rises, it is located in the Town of Stark and the lower half is in the Town of Minden. Within the watershed, the majority of the land is open space, with roughly one third (33.9%) being forested land. The upper part of the watershed is a mix of rural residential, agriculture land, and several small hamlets including Vanhornesville and Stark. Then in the lower part of the watershed, residential and commercial uses mostly in Village of Fort Plain.
The creek has an average slope of 1.5% throughout its entire length. The upper creek has a slope of 3% from the source to the Hamlet of Starkville, the from there downstream has a slope of .8%.
The United States Geological Survey (USGS) maintains a few stream gauges along the Otsquago Creek. The lower one, in operation since 1993 is located .8 miles (1.3 km) upstream from the mouth in the Village of Fort Plain.
The lower station had a maximum discharge of 24,600 cubic feet (700 m3) per second and a gauge height of 17.52 feet (5.34 m) on during the flood of June 28, 2013. It had minimum discharge of .6 cubic feet (0.017 m3) per second on November 30, 1964.
Flooding has occurred numerous times on most of the creek, with major damage in the hamlets of Van Hornesville, Starkville and Hallsville, and in the Village of Fort Plain. Flooding is caused in part due to large amounts of coarse sediment being carried downstream from the upper creek during large floods are deposited further downstream and clog bridges. From the mouth to roughly 1,000 feet (300 m) upstream can be effected by backwater flooding from the Mohawk River.
According to FEMA on September 22, 1938, October 2, 1945, October 17, 1955 and March 11, 1976 there were major floods along the creek. On March 5, 1979, an ice jamming caused the Mohawk River and Otsquago Creek to overflow and caused extensive damage in the Village of Fort Plain. Floodwaters were reported to be four feet deep in the on River Street and Hancock Street in the village. The flooding receded after the washout of the aqueduct on the creek by State Route 5S. Another severe storm caused catastrophic flooding along the Otsquago Creek between June 26 and June 29, 2006. Then in mid to late June 2013, severe flooding was experienced along the entire creek. The flood of 2013 flooded downtown Fort Plain and extended all the way up the creek to Van Hornesville. A culvert was damaged on Chyle Road and the Owen D. Young Central School was damaged in Van Hornesville. Part of State Route 80 between Van Hornesville and Starkville was entirely washed out. Large amounts of sediment were also carried downstream and deposited which caused flooding to be worse. One fatality was reported in this storm. In February 2017, 625 residents were told to evacuate as the flood warning siren was activated because of quickly rising waters. After a short time residents were told it was safe to go home. No major damage occurred during this flood, only a few trees and wires were knocked down and minor stream bank erosion occurred.
Fish species present in the creek are brook trout, brown trout and rainbow trout. In 2019 there were 270 8 to 9 inches (20 to 23 cm) brown trout released into the creek in the Town of Minden, and 350 8 to 9 inches (20 to 23 cm) brown trout and 1000 8 to 9 inches (20 to 23 cm) rainbow trout in the Town of Stark.
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