Engineering Commons^™

The Sinmap Approach To Terrain Stability Mapping, Robert T. Pack, David G. Tarboton, C. N. Goodwin

Civil and Environmental Engineering Faculty Publications

A promising approach to modeling the spatial distribution of shallow debris slides combines a mechanistic infinite slope stability model with a steady-state hydrology model. The spatial distribution of a “stability index” is governed primarily by specific catchment area (the upslope area per unit contour length) and slope. The model can be interactively calibrated to the unique characteristics of the topography, rainfall, and soils of a particular study area using simple parameters, graphs and maps. Once a landslide and terrain inventory is completed using aerial photographs, this approach is shown to have the capability of producing a stability classification map of …

Optimizing Conjunctive Water Use For Sustainable Production: Tools For The Management Spectrum, Richard C. Peralta, Shengjun J. Wu, H. J. Morel-Seytoux, Fernando Chanduvi

Civil and Environmental Engineering Faculty Publications

Making best use of water resources requires coordinating use of groundwater and surface waters--conjunctive use. Conjunctive water management is important on the regional (watershed or aquifer), water district and field scales. Goals might differ for the different administrative levels. A regionally optimal water management strategy is not necessarily optimal for water district managers and individual farmers. Interactions between levels are affected by laws, regulations, traditions and public pressure. To help each organizational level develop water management strategies that best achieve its goals, computer simulation/optimization (S/O) models are useful. Such S/O models couple water flow and transport simulation techniques with formal …

A Review On The Documentation For The South Florida Water Management Model (Sfwmm), Daniel P. Loucks, Wendy D. Graham, Conrad D. Heatwole, John W. Labadie, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

Early in February 1998, the South Florida Water Management District asked Professors Wendy D. Graham, Comad D. Heatwole, John W. Labadie, Daniel P. Loucks, and Richard C. Peralta to serve on a panel to

• Review the Draft Documentation for the South Florida Water Management Model (SFWMM),

• Develop a series of questions, issues and areas for discussion during a site visit,

• Visit the District for a model familiarization session, and

• Prepare and submit a written evaluation of the model, with emphasis on the documentation that will include criticisms, specific recommendations for improvement, and responses to questions posed.

Controlled Environment Potentiostat To Study Solid-Aqueous Systems, R A. Petrie, P. R. Grossl, Ronald C. Sims

Biological Engineering Faculty Publications

We designed a redox apparatus that controls electropotenial (Eh), pH, and temperature. The apparatus is fully automated and can be assembled from equipment found in most soil analytical laboratories. The reactor can maintain environmental conditions used to evaluate the chemical fate of contaminants under natural conditions (natural attenuation) or adjust them to a new steady state to evaluate the effect of engineered remediation on a subsurface system. It can operate within a wide range of redox potential values (−400 to 400 mV) and at any pH value. The stability and accuracy of the instrument was tested by performing Eh-pH titrations …

Remax: Software For Optimizing Ground-Water Management, Conjunctive Water Management, And Remediation Design, Richard C. Peralta, Alaa H. Aly

Civil and Environmental Engineering Faculty Publications

REMAX is a software package designed to assist water managers in developing optimal ground water or coordinated ground water/surface water strategies for a wide range of management problems. REMAX uses MODFLOW, MT3D, and other simulation models to develop the response matrix or response surface equations employed in the final optimization model. To address nonlinear systems (e.g., unconfined aquifers) accurately, REMAX uses a modified response-matrix method. REMAX several nonlinear functions to represent a wide variety of nonlinear response surfaces. REMAX can be used for deterministic or reliability-based optimization problems. Decision variables are ground-water extraction/injection rates and/or surface water diversion rates. State …