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The Delaware Water Gap with the Pennsylvania town of the same name visible in the lower left next to the I-80 crossing. A water gap is a geological feature where a river cuts through a mountain ridge. The Delaware Water Gap formed 500 million years ago [4] when quartz pebbles from mountains in the area were deposited in a shallow sea.
"The Gap" as seen from the Delaware River Viaduct. The namesake feature of the recreation area is the prominent Delaware Water Gap, located at the area's southern end.The Delaware River runs through the gap, separating Pennsylvania's Mount Minsi on Blue Mountain, elevation 1,461 feet (445 m), from New Jersey's Mount Tammany on Kittatinny Mountain, elevation 1,527 feet (465 m).
The Delaware Water Gap National Recreation Area came about as a result of the failure of a controversial plan to build a dam on the Delaware River at Tocks Island, just north of the Delaware Water Gap to control water levels for flood control and hydroelectric power generation. The dam would have created a 37-mile (60 km) lake in the center of ...
A U.S. Army Corps of Engineers dredge leaves the eastern entrance to the canal on the Delaware River at Reedy Point, Delaware. The Chesapeake & Delaware Canal (C&D Canal) is a 14-mile (22.5 km)-long, 450-foot (137.2 m)-wide and 35-foot (10.7 m)-deep ship canal that connects the Delaware River with the Chesapeake Bay in the states of Delaware and Maryland in the United States.
Following is a list of dams and reservoirs in Delaware. The National Inventory of Dams defines any "major dam" as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3 ), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3 ).
The nearly 8100 major dams in the United States in 2006. The National Inventory of Dams defines a major dam as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3).
The West Branch Delaware River is one of two branches that form the Delaware River. It is approximately 90 mi (144 km) long, and flows through the U.S. states of New York and Pennsylvania. It winds through a mountainous area of New York in the western Catskill Mountains for most of its course, before joining the East Branch along the northeast ...
Hoopes Reservoir. Hoopes Reservoir is a reservoir in New Castle County, Delaware. The reservoir first impounded the water of Old Mill Stream and Red Clay Creek in 1932, with a dam built by the city of Wilmington, Delaware, for municipal drinking water. It has a water surface of 187 acres (76 ha), a maximum capacity of 11,000 acre-feet ...