Montgomery County, New York the county has a total area of , of which is land and (1.8%) is water. Montgomery County is located in the central part of the state, west of the city of Schenectady and northwest of Albany. The Erie Canal runs through Montgomery County parallel to the Mohawk River, connecting to the Wood River to the west, which leads to Lake Ontario. Overall, the canal connected Great Lakes shipping with the Hudson River and the port of New York on the Atlantic Ocean. Several towns and villages developed along the canal, as it carried much trade and passenger traffic during
Asian carp in North America barrier in the transcontinental divide Chicago Sanitary and Ship Canal. The canal connects the Mississippi River drainage basin (via the Illinois River and its tributary the Des Plaines River), to the Great Lakes Waterway (via the Chicago River), and is the only navigable aquatic link between these basins. The initial fish barrier was used as a demonstration project to study the design's effectiveness. Following positive results, construction began on a second, permanent barrier in 2004. In addition to the canal, the Corp has identified 18 sites in five additional states, from Minnesota to New York, that could allow for movement