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Subsequently every watershed along this coast is assigned a number using the Pfafstetter Coding System. This implies that the four largest watersheds are selected and receive numbers 2,4,6, or 8. The watersheds in between the large systems receive numbers 3, 5, and 7. Numbers 1 and 9 are used for the small watersheds on the edges of the strait.
Watershed management is the study of the relevant characteristics of a watershed aimed at the sustainable distribution of its resources and the process of creating and implementing plans, programs and projects to sustain and enhance watershed functions that affect the plant, animal, and human communities within the watershed boundary. [1]
Watershed delineation is the process of identifying the boundary of a watershed, also referred to as a catchment, drainage basin, or river basin. It is an important step in many areas of environmental science, engineering, and management, for example to study flooding, aquatic habitat, or water pollution.
Some of the key elements of the National CZM Program include protecting natural resources; managing development in high hazard areas; giving development priority to coastal-dependent uses; providing public access for recreation; and coordinating state and federal actions.
Nonetheless, hydrologic units and watersheds are commonly treated as synonymous, and this misapplication and misunderstanding can have some serious scientific and management consequences." [ 9 ] Aquifers of the United States are organized by national principal aquifer codes and names assigned by the National Water Information System (NWIS).
The Watershed and Flood Prevention Operations Program, a program of the Natural Resources Conservation Service (NRCS), includes Watershed Operations (under the Flood Control Act of 1944, P.L. 78- watershed projects to distinguish them from larger downstream projects built by the U.S. Army Corps of Engineers and by the Bureau of Reclamation.
The Tongass National Forest in Alaska is managed by the United States Forest Service. Natural resource management (NRM) is the management of natural resources such as land, water, soil, plants and animals, with a particular focus on how management affects the quality of life for both present and future generations (stewardship).
TMDL planning in large watersheds is a process that typically involves the following steps: Watershed characterization—understanding the basic physical, environmental, and human elements of the watershed. Impairment status—analyzing existing data to determine if waters fully support beneficial uses