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In the study of image processing, a watershed is a transformation defined on a grayscale image. The name refers metaphorically to a geological watershed , or drainage divide, which separates adjacent drainage basins .
MapWindow GIS and its associated MapWinGIS ActiveX Control were originally developed by Daniel P. Ames and a team of professors and students at Utah State University in 2002-2003 as part of a research project with the Idaho National Laboratory in Idaho Falls, Idaho as a GIS mapping framework for watershed modelling tools in conjunction with source water assessments conducted by the laboratory.
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.
XMDF files are smaller and allow faster access times than ASCII files. The Watershed Modeling System (WMS) is a proprietary water modeling software application used to develop watershed computer simulations. The software provides tools to automate various basic and advanced delineations, calculations, and modeling processes. [9]
The watershed basin and stream delineation tool uses either the Jenson or At Search algorithm and allows for artificial diversions. A suite of sophisticated basin metrics and digital elevation map analysis tools is provided, including statistical and analysis functions such as temporal min, max, mean, standard deviation, slope and curvature ...
The pieces include units that drain to segments of streams, remnant areas, noncontributing areas, and coastal or frontal units that can include multiple watersheds draining to an ocean or large lake. Hence, half or more of the hydrologic units are not watersheds as the name of the framework Watershed Boundary Dataset (WBD) implies.
The actual shapefile relates specifically to the .shp file, but alone is incomplete for distribution as the other supporting files are required. In line with the ESRI Shapefile Technical Description, [1] legacy GIS software may expect that the filename prefix be limited to eight characters to conform to the DOS 8.3 filename convention, though ...
System for Automated Geoscientific Analyses (SAGA GIS) is a geographic information system (GIS) computer program, used to edit spatial data.It is free and open-source software, developed originally by a small team at the Department of Physical Geography, University of Göttingen, Germany, and is now being maintained and extended by an international developer community.