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SWAT (soil and water assessment tool) is a river basin scale model developed to quantify the impact of land management practices in large, complex watersheds. SWAT is a public domain software enabled model actively supported by the USDA Agricultural Research Service at the Blackland Research & Extension Center in Temple, Texas , USA. [1]
Hydrological model. A hydrologic model is a simplification of a real-world system (e.g., surface water, soil water, wetland, groundwater, estuary) that aids in understanding, predicting, and managing water resources. Both the flow and quality of water are commonly studied using hydrologic models. MODFLOW, a computational groundwater flow model ...
Rainwater harvesting. Basic configuration of domestic rainwater harvesting system in Uganda. [1] Rainwater harvesting ( RWH) is the collection and storage of rain, rather than allowing it to run off. Rainwater is collected from a roof-like surface and redirected to a tank, cistern, deep pit (well, shaft, or borehole), aquifer, or a reservoir ...
Water storage. Water storage is a broad term referring to storage of both potable water for consumption, and non potable water for use in agriculture. In both developing countries and some developed countries found in tropical climates, there is a need to store potable drinking water during the dry season. In agriculture water storage, water is ...
The Agricultural Research Service ( ARS) is the principal in-house research agency of the United States Department of Agriculture (USDA). [3] ARS is one of four agencies in USDA's Research, Education and Economics mission area. ARS is charged with extending the nation's scientific knowledge and solving agricultural problems through its four ...
Website. www .nal .usda .gov. The United States National Agricultural Library ( NAL) is one of the world's largest agricultural research libraries, and serves as a national library of the United States and as the library of the United States Department of Agriculture. Located in Beltsville, Maryland, it is one of five national libraries of the ...
The mission of the agricultural experiment stations as set out in the Hatch Act is to conduct original research, investigation, and experiments which contributing to the establishment and maintenance of the agricultural industry in the United States. Including research pertaining to agriculture in its broadest sense as well as improvement of ...
Water balance components in agricultural land. The water balance components can be grouped into components corresponding to zones in a vertical cross-section in the soil forming reservoirs with inflow, outflow and storage of water: the surface reservoir (S) the root zone or unsaturated (vadose zone) (R) with mainly vertical flows