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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. As of January 2017 [update] , supported models include HEC-1 , HEC-RAS , HEC-HMS , TR-20 , TR-55 , NFF , Rational , MODRAT , HSPF , CE-QUAL-W2 , GSSHA , SMPDBK ...
[13] [14] [15] GSSHA is widely used in the U.S. for research and analysis by U.S. Army Corps of Engineers districts and larger consulting companies to compute flow, water levels, distributed erosion, and sediment delivery in complex engineering designs. A distributed nutrient and contaminant fate and transport component is undergoing testing.
Static level is the level of water in the well when no water is being removed from the well by pumping. [8] Water table is the upper level of the zone of saturation, an underground surface in which the soil or rock is permanently saturated with water. [9] Well yield is the volume of water per unit time that is produced by the well from pumping. [8]
Dynamic wave routing can account for channel storage, backwater, entrance/exit losses, flow reversal, and pressurized flow. Because it couples together the solution for both water levels at nodes and flow in conduits it can be applied to any general network layout, even those containing multiple downstream diversions and loops.
Modelica-based system-level modeling tool. Leverages symbolic computing via tight integration with Maple. NetLogo: Free, GPLv2 Java, Scala: 2020 Agent-based modeling environment in LOGO; supports system dynamics models as a secondary feature. OpenModelica
Normally A increases with Q and S because the higher the water level is the higher the discharge capacity becomes. The factor is therefore called Aq instead of A. The non-linear reservoir has no usable unit hydrograph. During periods without rainfall or recharge, i.e. when R = 0, the runoff equation reduces to Q2 = Q1 exp { − Aq (T2 − T1 ...
A stream hydrograph is commonly determining the influence of different hydrologic processes on discharge from the subject catchment. Because the timing, magnitude, and duration of groundwater return flow differs so greatly from that of direct runoff, separating and understanding the influence of these distinct processes is key to analyzing and simulating the likely hydrologic effects of ...
The Louth Navigation canal and parts of the old River Lud perform land drainage and water level control with a number of locks and pumping stations. A tilting weir controls water levels in the Riverhead Basin and includes a gauging station which measures the flow along the canal. Controlling the height of water within a chamber at water ...