Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 76 for “"Hydrologic Modeling"”.
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Applications of GIS in hydrologic modeling
… of geographic information systems (GIS) to hydrologic modeling, stormflow generation in steep watersheds of humid regions, and automated configurations of watersheds was reviewed. A hydrologic model in conjunction with GIS technology was constructed to simulate stormflow hydrographs from a …
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Hydrologic Modeling of Irregular Tile Drainage Systems
… the watershed scale and integrating the dominant hydrologic processes. An analytical solution to the problem of subsurface flow to a single tile was proposed and evaluated. This solution was incorporated into a description of infiltration which accounts for variable moisture conditions and complex …
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Precipitation Estimation Methods in Continuous, Distributed Urban Hydrologic Modeling
… (QPE) remains a key area of uncertainty in hydrological modeling, particularly in small, urban watersheds which respond rapidly to precipitation and can experience significant spatial variability in rainfall fields. Few studies have compared QPE methods in small, urban watersheds, and …
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Hydrologic modeling as a decision-making tool in wildlife management
… purpose of this study was to evaluate a simple hydrologic model as a tool for assisting wildlife managers in comparing potential hydrologic effects of different management options and of natural and anthropogenic site disturbances on eastern forested mountain watersheds. A number of existing …
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Numerical hydrologic modeling of the Creede epithermal ore-forming system, Colorado
One of the fundamental objectives of the extensive research on Creede district, Colorado, has been to determine the sources, pathways, and interactions of fluids involved in the genesis of the epithermal ores. From the large volume of data on the main period of mineralization, a well-constrained …
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Effect of Spatial Scale on Hydrologic Modeling in a Headwater Catchment
In this study, two hydrologic models were applied to the mountainous Back Creek catchment, located in the headwaters of the Roanoke River in Southwest Virginia. The two models employed were HEC-1, an event based lumped model, and TOPMODEL, a continuous semi-distributed model. These models were used …
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Hydrologic modeling using triangulated irregular networks : terrain representation, flood forecasting and catchment response
… and temporal variability in the land-surface hydrologic response to rainfall and understanding the physical relations between internal watershed processes and observed streamflow. This thesis presents the development and application of a distributed hydrologic model distinguished by its …
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Distributed Hydrologic Modeling of the Upper Roanoke River Watershed using GIS and NEXRAD
… are inherently spatially variable. Many hydrologic runoff models do not account for this spatial variability and instead use "lumped" or spatially averaged parameters. Lumped model parameters often must be developed empirically or through optimization rather than be calculated from field …
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Surface hydrologic modeling and GIS: a case study of the Kaimai Hydropower project catchment, New Zealand
The recent trend towards spatial hydrologic modeling is due to advances in the field of geographic information systems (GIS). Spatially distributed models take into account the spatial variability within the catchment and allow users to define parameters for each sub-watershed or river section …
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Hydrologic modeling of low water crossing design performance at Camp Atterbury Joint Maneuver Training Center, Indiana
There is an ever increasing demand for sustainability around the globe; this is especially true for military land management. In an era of fiscal constraint, budgetary reductions, and increasing regulatory oversight, the appeal of efficient and effective sustainability practices is greater than …
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Exploring the effects of uncertainty in hydrologic modeling and reconciling spatiotemporal data gaps at the continental scale
Spatiotemporally continuous estimates of the hydrologic cycle are often generated through hydrologic modeling, reanalysis, or remote sensing methods, and commonly applied as a supplement to, or a substitute for, in-situ measurements when observational data are sparse or unavailable. Increased …
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Hydrologic modeling of the Williams River with tRIBS : development and testing of a novel user interface for the TIN-based hydrologic model
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2002.
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Hydrologic Modeling of a Probable Maximum Precipitation Event Using HEC-HMS and GIS Models - A Case Study of Two Watersheds in Southern Virginia-
… Virginia. For each, a HEC-HMS event-based hydrologic model was constructed to simulate the rainfall-runoff response from the Probable Maximum Storm (PMS), the theoretical worst-case meteorological event that is capable of occurring over a particular region. The primary goal of these …
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A Comparison of the Army Corps of Engineers Hydrologic Modeling System and Autodesk Storm and Sanitary Analysis for Hydraulic and Hydrologic Analysis and Design
<p>Hydrological and hydraulic effects of urban development is one of the key issues of study for improved water management. The addition of impervious surfaces to once pervious land and re-routing open channels and flow paths can cause flooding or declining water levels within a watershed. Many …
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Modeling Human Interferences to Hydrologic Systems
… the understanding of the coupled human and hydrological systems by detecting, estimating and modeling both indirect and direct human interferences. This thesis research is expected to advance more accurate understanding of human interferences to hydrologic systems, as well as providing new …
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