Automatic Extraction of Bakhmeh Dam’s Geometrical Elements: Digital Elevation as a Model (DEM)
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Abstract
The geometrical elements of Bakhma’s Dam are extracted by relying on the digital elevational model (DEM) alongside using other applicable programs, including (GLOBAL MAPPER-SURFER-GIS) that entail spatial informational data about lands’ features. The study follows an analytical and descriptive approach. The geometrical elements data are extracted from the depth of (380) m of the dam up to (600) m height of the sea level. The relationship of the negative volumetric and negative area elements indicates the existence of a large difference in the values of (NV), (NPA) and (NSA). This positive factor in choosing the topographic depression shows a large decrease in the surface area. The flat (evaporation area) and the wet area (the penetration area) is offset by a large increase in the storage volume, as it will give an indication that the depression is deep and has little space
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