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The Hydrologic Modeling System (HEC-HMS) is designed to simulate the precipitation-runoff processes of dendritic watershed systems. It is designed to be applicable in a wide range of geographic areas for solving the widest possible range of problems. This includes large river basin water supply and ...
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Three-Dimensional Flow, Heat, and Solute Transport Model The Heat- and Solute-Transport Program (HST3D) simulates ground-water flow and associated heat and solute transport in three dimensions. The HST3D program may be used for analysis of problems such as those related to sub-surface-waste injecti ...
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HYDROGEOCHEM 4.0: A Coupled Model of Fluid Flow, Thermal Transport, and HYDROGEOCHEMical Transport through Saturated-Unsaturated Media The computer program HYDROGEOCHEM 4.0 is a coupled model of water flow, thermal transport, solute transport, and geochemical kinetic/equilibrium reactions in satur ...
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Hydrologic Transport and Mixed Geochemical Kinetic/Equilibrium Model HYDROGEOCHEM 1 is a coupled model of hydrologic transport and geochemical reaction in saturated-unsaturated media. It is designed to simulate transient and/or steady-state transport of Na, aqueous components and transient and/or s ...
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Infinite Extent is a Windows-based pump test analysis package that includes type curve, graphical, and automatic parameter-estimation techniques. Infinite Extent's drag-and-drop type curve matching is fast and easy. Infinite Extent accepts data for up to five wells for Distance-Drawdown analysis as ...
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Cutting Edge Mapping and Spatial Analysis MapViewer is an affordable mapping and spatial analysis tool that allows you to produce publication-quality thematic maps easily. Independent consultants, scientists, GIS analysts, sales organizations and numerous government agencies are discovering importa ...
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U.S. EPA Geochemical Equilibrium Speciation Model MINTEQA2 for Windows is a user-friendly Windows version of the popular U.S. EPA geochemical equilibrium model. MINTEQA2 is a geochemical equilibrium speciation model capable of computing equilibria among the dissolved, adsorbed, solid, and gas phase ...
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MODPATH, "A Particle Tracking Post-Processing Package for MODFLOW, the USGS 3-D Finite-Difference Ground-Water Flow Model (MODFLOW)," is the most widely-used particle-tracking program in the world.

Multi-phase Flow and Transport MOFAT is a finite element program that simulates multiphase (water, oil and gas) flow and transport of up to five non-inert chemical species. MOFAT models flow of light or dense organic liquids in three fluid phase systems. MOFAT simulates dynamic or passive gas as a ...
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Vacuum Enhanced Recovery Model MOVER is an areal three-phase (water, oil and gas) finite-element model. Currently, the most advanced model of its kind, MOVER can be used to model flow of water, oil and gas, and optimize the recovery of LNAPL and water by minimizing NAPL entrapment in the saturated/ ...
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