Copyright (c) 2009 All rights reserved. http://works.bepress.com/karla_andrew Recent documents in Karla M Andrew en-us Sun, 31 May 2009 08:01:30 PDT 3600 http://works.bepress.com/karla_andrew/4 http://works.bepress.com/karla_andrew/4 Tue, 09 Sep 2008 07:26:14 PDT Usage of very large sets of historical spatial data in knowledge discovery process became a common trend and in order to obtain better results from this knowledge discovery process the data should be of high quality. We proposed a framework for data quality assessment and cleansing tool for spatial data that integrates the spatial data visualization and analysis capabilities of the ARCGIS Engine, the reason and inference capability of an expert system. In this paper, we explain the core architecture of the framework and also the functionality of each module in the framework. We will explain the implementation details of the framework. Aditya Tadakaluru Computer Science http://works.bepress.com/karla_andrew/3 http://works.bepress.com/karla_andrew/3 Mon, 08 Sep 2008 09:48:02 PDT This report documents the structure and the use of a windows-based interface developed by the Illinois State Water Survey for the Office of Water Resources, Illinois Department of Natural Resources. The current version of the interface program is able to download historic, real-time, and forecasted stage and flow data from the U.S. Geological Survey, U.S. Army Corps of Engineers, and the National Weather Service websites interactively. These data are used to update existing Data Storage System (DSS) database or to create new ones; to run the UNET model for historic, design, real-time, and forecasted flood events in the Lower Illinois River; and to post-process model outputs from DSS files in tabular and graphical formats.. This interface program uses the original UNET generic geometry and boundary condition files to maintain the same level of accuracy as the UNET model, but it also allows the user to change some of the parameters, such as, the simulation time interval, time windows, and numerical Corant number, and etc., in the BC file. The real-time simulation of a flood event simulates the flood stage profiles using forecasted stage and real-time flow data downloaded from related websites. With the primary focus on simulations of levee failures, the interface program lets the users modify parameters to simulate simple levee failures through the simple spillway approach for two types of complicated embankment failures, overtopping and piping. A new simulation can be performed using the modified levee information. The change of water surface elevation induced by modifying the levees can be compared with another simulation graphically and also in table format. Stage profiles from all the simulations can be plotted together with the levee heights on both sides of the channel along the Lower Illinois River to provide a visual view of the locations of overtopping. Overtopping locations and magnitudes will be tabulated should they occur. Misganaw Demissie Hydrology http://works.bepress.com/karla_andrew/2 http://works.bepress.com/karla_andrew/2 Mon, 08 Sep 2008 09:46:01 PDT Fox River Watershed Investigation, Stratton Dam to the Illinois River: Water Quality Issues and Data Report to the Fox River Study Group, Inc. McConkey, Sally, Alena Bartosova, Lian-Shin Lin, Karla Andrew, Michael Machesky, Chris Jennings, 2004 Illinois State Water Survey, Champaign, IL, ISWS CR 2004-06 Full Text Available The Illinois Environmental Protection Agency (IEPA) in their Illinois Water Quality Report 2000 (IEPA, 2000) listed parts of the Fox River in McHenry and Kane Counties and part of Little Indian Creek as impaired. In the 2002 IEPA report (IEPA, 2002), the entire length of the Fox River in Illinois is listed as impaired, as well as Nippersink, Poplar, Blackberry, and Somonauk Creeks, and part of Little Indian Creek. The IEPA has included the Fox River and these tributaries on their list of impaired waters commonly called the 303(d) list (IEPA, 2003). The IEPA uses a detailed, stepwise method to develop this list, 303(d) and their rational and methodology are described in Illinois 2002 Section 303(d) List (IEPA, 2003).Concerns about the surface water quality in the watershed led to the formation of the Fox River Study Group, Inc. (FRSG) in 2001. Initially the FRSG developed a plan to collect additional water chemistry data to augment the ambient monitoring by the IEPA and used in IEPA's use assessment of water quality. With encouragement from the IEPA, the FRSG expanded its initiative to a watershed plan that centers on development of models of the watershed to help investigate water quality issues and develop feasible watershed management plans. Models provide linkages between observed constituents in the water and their sources. Well-calibrated models can be used to evaluate potential management scenarios to assess their probable impact, thus serving as tools to evaluate alternative actions. At the request of the FRSG, the Illinois State Water Survey (ISWS) proposed a multiphase plan of study with the ultimate objective of developing watershed computer models and a long-term monitoring and modeling plan. Phase I of the project, reported herein, was to assemble and evaluate available data in preparation for model development. Phase II will focus on customizing models of watershed to address identified water quality issues. Subsequent phases will involve intensive data collection for model calibration and validation, and implementation of long-term monitoring and model updates. The current study is limited to the Fox River watershed below Stratton Dam to the confluence with the Illinois River. Ultimately the study area must be expanded to include the upper portion of the watershed, including Wisconsin, in a collaborative watershed plan between agencies in both Illinois and Wisconsin. Fundamental to all phases of the project is information dissemination and communication with stakeholders.This report presents the results of phase I of the project, which was funded by the IEPA. The report is only one of the products of phase I. The Fox River Watershed Investigation Web site (http://ilrdss.sws.uiuc.edu/fox), accessed through the Illinois Rivers Decision Support System Web site, was developed and serves as a portal to other products, including a database of publications reporting water quality data for the Fox River watershed; a project bibliography; geographically referenced geographic information system (GIS) datasets and metadata with online mapping tools; a water chemistry database, FoxDB, with an interface for viewing and loading data; and an electronic version of the full report. Alena Bartosova Hydrology http://works.bepress.com/karla_andrew/1 http://works.bepress.com/karla_andrew/1 Mon, 08 Sep 2008 09:42:35 PDT Watershed modeling applications for the Fox and Iroquois River watersheds in Illinois were used to evaluate the response in simulated streamflow to various climate scenarios. The climate scenarios applied to both watersheds are based on simulations from two global climate models, the Japan and Hadley models, which respectively represent comparatively "dry" and "wet" scenarios of future climatic conditions. The "Dry" climate scenarios result in a considerable reduction in the simulated flows for both modeling applications, although the specific amount of reduction varies considerably between the two applications. The "Wet" climate scenarios cause relatively small amounts of change in simulated streamflow amounts. For the Fox River watershed, changes in most flow parameters for the "Wet" scenario are less than 10 percent; whereas for the Iroquois River watershed, the changes are generally less than 15 percent. In particular, results indicate that increases in precipitation values may not necessarily translate into increased flooding conditions if also accompanied by warmer temperatures. The two watershed applications use different hydrologic simulation models, which is useful since the "true" hydrologic response to variations in climate is unknown and using different models can present a range of credible simulated hydrologic responses. However, more work is needed to identify and separate the varying responses related to different model algorithms versus the varying responses related to the physical characteristics of the individual watersheds being modeled. Vern Knapp Hydrology