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The Delaware Geological Survey is the primary source of information about Delaware geology and hydrogeology, such as surface and sub-surface geologic rock formations, extent and quality of aquifers, stream and groundwater monitoring, water supply, earthquakes, floods and droughts, coastal processes (tides, beach erosion), topographic mapping ...
The Wedge (or Delaware Wedge) is a 1.068-square-mile (684-acre; 2.77 km 2) [1] ... An 1898 USGS topographic map attributing ownership of The Wedge to Pennsylvania.
Marshyhope Creek is a 37.0-mile-long (59.5 km) [8] tributary of the Nanticoke River on the Delmarva Peninsula.It rises in Kent County, Delaware, and runs through Caroline County, Maryland, and Dorchester County, Maryland.
A new map poster by Lisa Glover shows the contours of the Delaware River’s deepest point. Sales benefit the Upper Delaware Council.
The Delaware Water Gap is a water gap on the border of the U.S. states of New Jersey and Pennsylvania where the Delaware River cuts through a large ridge of the Appalachian Mountains. [ 2 ] The gap makes up the southern portion of the Delaware Water Gap National Recreation Area , which is used primarily for recreational purposes, such as ...
The first multi-sheet topographic map series of an entire country, the Carte géométrique de la France, was completed in 1789. [9] The Great Trigonometric Survey of India, started by the East India Company in 1802, then taken over by the British Raj after 1857 was notable as a successful effort on a larger scale and for accurately determining ...
The fact that the circle extends into the Delaware River makes for an unusual territorial possession; within the 12-mile circle, all the Delaware River to the low-tide mark on the east side is territory of the state of Delaware, leaving the river - and bridges - in sole possession of Delaware.
DE 24 Banks Road: Guinea Creek is a 4.22 mi ... receives about 44.9 in/year of precipitation, has a topographic wetness index of 635.57 and is about 24.6% forested. ...