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The National Hydrography Dataset (NHD) is a digital database of surface water features used to make maps. It contains features such as lakes , ponds , streams , rivers , canals , dams , and stream gauges for the United States .
The National Map is part of the USGS National Geospatial Program. [3] The geographic information available includes orthoimagery (aerial photographs), elevation, geographic names, hydrography, boundaries, transportation, structures and land cover. The National Map is accessible via the Web, as products and services, and as downloadable data ...
3D rendering of a hydrologically-conditioned digital elevation model. This example from the U.S. Geological Survey shows “walling” or “fencing” using data from the Watershed Boundary Dataset (WBD) and “burning” of streams from the National Hydrography Dataset (NHDPlus).
The Clearwater River is a river situated on the Olympic Peninsula in Washington.It is the main tributary of the Queets River.The Clearwater River is 39 miles (63 km) long. [2]
The Pigeon River is a small river flowing to Lake Michigan on the western Lower Peninsula of the U.S. state of Michigan.The river is approximately 12.9 miles (20.8 km) long [4] [a] and drains an area of 61.7 square miles (160 km 2) [6] [b] in a generally rural area situated between the cities of Holland and Grand Haven.
The product of such hydrography is most often seen on nautical charts published by the national agencies and required by the International Maritime Organization (IMO), [4] the Safety of Life at Sea (SOLAS) [5] and national regulations to be carried on vessels for safety purposes. Increasingly those charts are provided and used in electronic ...
The Hiwassee River is a 147 mi (237 km) river [3] in the states of Georgia, North Carolina, and Tennessee.It originates from a spring on the north slope of Rocky Mountain in Towns County in northern Georgia, then flows northward into North Carolina before turning westward into Tennessee; it joins the Tennessee River a few miles west of what is now State Route 58 in Meigs County, Tennessee.
Poso Creek or Posey Creek [3] is an 87.9-mile (141.5 km) [2] intermittent stream in Kern County, California. [1]The headwaters of Poso Creek are located within the Sierra Nevada and the Sequoia National Forest, at elevations of up to 8,000 feet (2,400 m).