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<br />001942 <br /> <br />Overview of Hydrology Modeling Documentation <br /> <br />Two Documents <br /> <br />Two documents discuss the San Juan RIP Hydrology Model. This document describes in detail the <br />collection of data, pre-analysis of data, development of the model tools, modeling assumptions and <br />limitations, and processing of model results, The second document is a users manual for making <br />actual model runs. It describes the set of computer tools that comprise the San Juan RIP Hydrology <br />Model, provides step by step instructions for making complete model runs, and explains how to make <br />configuration changes in the model. <br /> <br />Contents of This Document <br /> <br />Natural Flow and Historic Depletion Analysis <br />This section discusses the data and methods that Reclamation has used to develop natural flows, It <br />describes historic depletions and the source of the data, Calculation of crop consumptive use and <br />determination of cropping patterns are described. <br /> <br />Computer Based Modeling Tools <br />The RiverWare modeling environment is discussed. A definition of RiverWare terms is included, <br />An overview of the pre-processor and post-processor is described, <br /> <br />Model Input Data and Operating Rules <br />This section contains details of specific project operation. Details of the preprocessor are discussed. <br />Various model adjustments and a detailed node by node summary are presented, <br /> <br />Model Calibration and Verification <br />Specific details of model development, validation and calibration are discussed, Implementation of <br />operation rules for various projects are outlined, <br /> <br />Simulation Scenarios and Model Runs <br />Simulation of the various water development scenarios and model run criteria are presented, The <br />user variable parameters adjusted in the Model are discussed, <br /> <br />Analysis of Model Output <br />Data extraction, post-processing of model output and presentation of the flow magnitude and duration <br />habitat criteria are included <br /> <br />Model Limitations and Recommendations <br />There are certain limitations of the SJRIP Hydrology Model and areas where it can be improved, <br />These issues are outlined and discussed. <br /> <br />States' Qualifications and Objections <br />Both New Mexico and Colorado have concerns regarding the SJRlP Hydrology Model. This is a <br />forum for this discussion, <br /> <br />DRAFT - SJRIP Hydrology Model Documentation <br />June 18,1999 3 <br />