Texas A&M College of Agriculture and Life Sciences
TAMU Hydrologic Modeling Inventory
A comprehensive inventory of models used in Hydrology, Hydraulic, Water Quality and Water Use Management Assessments

UCODE

UCODE_2005 and six post-processors are included in this distribution. These programs can be used with existing process models to perform sensitivity analysis, data needs assessment, calibration, prediction, and uncertainty analysis. Any process model or set of models can be used; the only requirements are that models have numerical (ASCII or text only) input and output files, that the numbers in these files have sufficient significant digits, that all required models can be run from a single batch file or script, and that simulated values are continuous functions of the parameter values. Process models can include pre-processors and post-processors as well as one or more models related to the processes of interest (physical, chemical, and so on), making UCODE_2005 extremely powerful. An estimated parameter can be a quantity that appears in the input files of the process model(s), or a quantity used in an kequation that produces a value that appears in the input files. In the latter situation, the equation is user-defined

Model Description: UCODE.pdf.   Contact:  epoeter@mines.edu

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Multi-Model Analysis (MMA)

The Multi-Model Analysis (MMA) computer code can be used to evaluate results from alternative models of a single system using the same set of observations for all models. As long as the observations, the observation weighting, and system being represented are the same, the models can differ in nearly any way imaginable. For example, they may include different processes, different simulation software, different temporal definitions (for example, steady-state and transient models could be considered), and so on. The multiple models may be calibrated by nonlinear regression or another method. Any calibration needs to be completed before application of MMA.

Description:  MMA.pdf   Contact:  epoeter@mines.edu

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MODSIM

MODSIM is a comprehensive, generalized river basin management decision support system (DSS) under continuous development and enhancement since 1979 at Colorado State  University. MODSIM is designed to be flexible and robust, allowing a wide range of analyses from short-term daily operations requiring hydrologic flow routing to long-term monthly river basin planning and management. MODSIM is capable of modeling large-scale river basin systems by employing an efficient minimum cost network flow optimization algorithm for simulating allocation of water according to water rights, storage ownership contracts, interstate compacts, and economic valuation. An important objective in MODSIM development has been to provide an easy-to-use modeling platform for decision makers and managers by incorporating a powerful graphical user interface for network creation, data import and editing, and georeferenced graphical output results. MODSIM is capable of simulating stream-aquifer interactions for conjunctive use of surface water and groundwater. MODSIM software development under the MS .NET Framework enables extensive customization capabilities, allowing MODSIM to be integrated with water quality models such as QUAL2E and numerical groundwater flow models such as MODFLOW, as well as incorporation of complex operating rules and regulations.

Model overview: MODSIM.pdf.    Website: http://modsim.engr.colostate.edu/index.shtml

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RiverWare

RiverWare® is a general river and reservoir modeling tool for operational scheduling and forecasting, planning, policy evaluation, and other operational analysis and decision processes. RiverWare has the capability to model:  (1) Hydrology and hydrologic processes of reservoirs, river reaches, diversions, distribution canals, consumptive uses, shallow groundwater interaction and conjunctive use; (2) Hydropower production and energy uses; and (3) Water rights, water ownership, and water accounting transactions.

Model overview: RiverWare.pdf.   Website: http://www.riverware.org/

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The Water Rights Analysis Package (WRAP)

The WRAP modeling system simulates water resources development, management, regulation, and use in a river basin or multiple-basin region under a priority-based water allocation system. The model facilitates assessments of hydrologic and institutional water availability and reliability in satisfying requirements for municipal, industrial, and agricultural water supply, hydroelectric energy generation, environmental instream flows, and reservoir storage. In WRAP terminology, water use requirements, water control infrastructure, and reservoir/river system operating strategies are called water rights. Basin-wide impacts of water resources development projects and management practices are modeled. Earlier versions of WRAP were designed specifically for water availability and reliability analyses based on the results of a simulation using a monthly computational time step. The 2010 version also includes daily time step modeling capabilities that include flow forecasting, flow routing methods, disaggregation of monthly naturalized flows to daily flows, and simulation of flood control reservoir system operations. Salinity simulation capabilities have also been recently added.

Model overview: WRAP.pdf.   Website: https://ceprofs.civil.tamu.edu/rwurbs/wrap.htm

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Diffusion Analogy Flow Model (DAFLOW)

The model provides a time series of discharge, flow area, top width, and tributary inflow at node points along a system of one-dimensional open channels. The time series of hydraulic variables can be used as input hydraulics by a transport model, such as the BLTM water quality model. The model is designed to operate with a minimum of field data. It requires no cross sectional information, the channel properties being defined by hydraulic geometry coefficients which have been found to be fairly predictable for a wide range of river sizes throughout the world. The flow must be unidirectional and backwater must not be significant, so a downstream boundary condition is not required. Model accuracy improves with river slope and model time step size. The accuracy is excellent for upland streams and it can be used can be used with good accuracy for time steps as short as one hour as long as the slope is greater than 0.0003.

Description:  DAFLOW.pdf.    Contact: hejobson@verizon.net

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MOdel for Urban SEwers (MOUSE)

MOUSE is a comprehensive modeling system for analysis of urban drainage and sewer systems including links to GIS. MOUSE simulates spatial variations in flows, water levels, sediment transport and pollution in pipes and open drains. MOUSE can be used for the prediction of hydraulic deficiencies, overflow sites, flood inundation areas, effect of real-time control, etc. MOUSE engine is used in the MIKE-URBAN widely used in modelling city water networks , including water distribution systems, storm water drainage systems, and sewer collection in separate and combined systems

Description: MOUSE.pdf   Website:  http://www.dhigroup.com

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Physical Habitat Simulation (PHABSIM)

The purpose of the Physical Habitat Simulation System (PHABSIM) is to simulate a relationship between streamflow and physical habitat for various life stages of a species of fish or a recreational activity. The basic objective of physical habitat simulation is to obtain a representation of the physical stream so that the stream may be linked, through biological considerations, to the social, political, and economic world. The two basic components of PHABSIM are the hydraulic and habitat simulations of a stream reach using defined hydraulic parameters and habitat suitability criteria. Hydraulic simulation is used to describe the area of a stream having various combinations of depth, velocity, and channel index as a function of flow. This information is used to calculate a habitat measure called Weighted Usable Area for the steam segment from suitability information based on field sampling of the various species of interest.

Description:  PHABSIM.pdf   Website: https://www.usgs.gov/software/phabsim

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