enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Watershed delineation - Wikipedia

   en.wikipedia.org/wiki/Watershed_delineation

   The watershed area can then be estimated using a planimeter, by overlaying graph paper and counting grid cells, or the result can be digitized for use with mapping software. The same process can be done on a computer, sketching the watershed boundary (with a mouse or stylus) over a digital copy of a topographic map. [ 1 ]

3. Watershed (image processing) - Wikipedia

   en.wikipedia.org/wiki/Watershed_(image_processing)

   Watersheds may also be defined in the continuous domain. [1] There are also many different algorithms to compute watersheds. Watershed algorithms are used in image processing primarily for object segmentation purposes, that is, for separating different objects in an image. This allows for counting the objects or for further analysis of the ...

4. Hydrologic unit system (United States) - Wikipedia

   en.wikipedia.org/wiki/Hydrologic_unit_system...

   The newer delineation work on watersheds and subwatersheds was done using 1:24,000 scale maps and data. As a result, the subbasin boundaries were changed and adjusted in order to conform to the higher resolution watersheds within them. Changes to subbasin boundaries resulted in changes in area sizes.

5. GSSHA - Wikipedia

   en.wikipedia.org/wiki/GSSHA

   GSSHA uses a square-grid, constant grid-size representation of watershed topography and characteristics, similar to a digital elevation model representation. Relevant model parameters are assigned to the model grids using index maps. Index maps are often derived from soils, landuse/land cover, vegetation, or other physiographic maps.

6. SMS (hydrology software) - Wikipedia

   en.wikipedia.org/wiki/SMS_(hydrology_software)

   The software provides tools to automate various basic and advanced delineations, calculations, and modeling processes. [9] It supports river hydraulic and storm drain models, lumped parameter , regression , 2D hydrologic modeling of watersheds, and can be used to model both water quantity and water quality .

7. Hydrological code - Wikipedia

   en.wikipedia.org/wiki/Hydrological_code

   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.

8. Geomorphometry - Wikipedia

   en.wikipedia.org/wiki/Geomorphometry

   This is a major component of geographic information systems (GIS) and other software tools for spatial analysis. In simple terms, geomorphometry aims at extracting (land) surface parameters (morphometric, hydrological, climatic, etc.) and objects (watersheds, stream networks, landforms, etc.) using input digital land surface model (also known ...

9. GIS and hydrology - Wikipedia

   en.wikipedia.org/wiki/GIS_and_hydrology

   Using digital elevation models combined with peak discharge data can predict which areas of a floodplain will be submerged depending on the amount of rainfall. In a study of the Illinois River watershed, Rabie (2014) [6] found that a decently accurate flood risk map could be generated using only DEMs and stream gauge data. Analysis based on ...