Thesis (M.A.)--Miami University, Dept. of Geography, 2008. / Title from first page of PDF document. Includes bibliographical references (p. 44-49).

Thesis (M.S.)--West Virginia University, 2006. / Title from document title page. Document formatted into pages; contains vii, 143 p. : ill. (some col.), maps (part col.). Includes abstract. Includes bibliographical references (p. 102-108).

Flood risk analysis is the instrument for utility managers to create a sound strategy and adaptation plans into their communities. Local municipalities are being continuously challenged every year by the impacts of climate change. The need to develop a screening tool to analyze watersheds and find risk areas is the goal of this research. Open source high-quality data is allowing climate scientists to create innovative ways to study watersheds when performing spatial analysis for inundation areas. The development procedures for a screening tool involved combining readily available data on topography, groundwater, surface water, tidal information for coastal communities, soils, open space, and rainfall data. All efforts to help develop a planning level framework that allows investigators to target the optimal set of outcomes for a given community. This framework appears to be viable across cities that may be inundated with water due to sea-level rise, rainfall, runoff upstream, and other natural events. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2020. / FAU Electronic Theses and Dissertations Collection

The water budget for a period of one year on a small instrumented semiarid subwatershed was evaluated. The evaluation was accomplished by identifying and quantifying the primary components of the water budget, rainfall, surface runoff, soil moisture content, and (collectively) other water losses. In addition to the evaluation of the water budget, regression models of surface runoff, soil moisture content, and suspended sediment were developed. Finally, chemical analysis of the runoff waters and an evaluation of a water balance simulation model were made. The study site, a 6.5-hectare subwatershed which lies on the southeastern portion of the Atterbury Watershed, is located about 16 km east of Tucson, Arizona. It has an elevation of about 3200 feet (975 m), with an average slope of about 3 percent. The mean annual precipitation is about 28 cm falling during two distinct seasons, summer and winter. The soil textural classification on the Atterbury Watershed ranges from sandy to clay loam. The evaluation of the water budget provided an index of how much of the total precipitation for the study year is attributed to each of the primary components of the water budget. Surface runoff, soil moisture content, and other water losses accounted for about 2, 55, and 43 percent of the total rainfall. Rainfall and related rainfall characteristics, such as intensity and duration, were found to be significant variables in regression models predicting surface runoff, soil moisture content, and suspended sediment. The chemical constituents of the waters were either within or lower than the limits set by the United States Public Health Service, World Health Organization and the United States Environmental Protection Agency. The usefulness of the BUM water balance model in simulating surface runoff from the study area was inconclusive.

The kinematic wave model for overland and channel flow is used to develop a method to calculate the runoff hydrograph from a watershed consisting of a cascade of planes and channels. First, a general, semi-analytic solution based on the method of characteristics and incorporating flow on infiltrating surfaces is derived. Unrealistic properties of previous solutions based on the method of characteristics are avoided by defining lateral inflow in relation to the presence or absence of flowing water on the flow surface. It is shown that the new definition of lateral inflow results in both a more physically realistic representation of the overland and channel flow process during the recession stage of the hydrograph and a more accurate estimation of runoff volume than obtained by previous solutions. Second, the concept of the storage of water at kinematic equilibrium is used to calculate a depth-discharge coefficient for a single plane system and a two plane, one channel system, each of which is hydraulically equivalent to a complex cascade of planes and channels. The method is validated on two rangeland watersheds in Arizona. The results show that hydrographs generated from the two simplified watershed geometries are essentially the same as those from complex geometries when the duration of the runoff event is equal to or greater than the time to kinematic equilibrium. At durations less than the time to kinematic equilibrium, the two plane, one channel system preserves the complex geometry properties better than the single plane system.

No description available.

No description available.

No description available.

No description available.

Thesis (M.S. - Watershed Management)--University of Arizona. / Includes bibliographical references.