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Joint probability analysis of precipitation and streamflow extremes
Title
Joint probability analysis of precipitation and streamflow extremes.
Creator
Lin, Chia-hung., College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
Abstract/Description
This thesis focuses on evaluation of joint occurrence of extreme precipitation and streamflow events at several hydrologic structures in South Florida. An analysis of twelve years storm events and their corresponding peak streamflow events during wet and dry season including annual peaks considering two seasons was performed first. Dependence analysis using time series data of precipitation and streamflow was carried out next. The analysis included use of storm events with different temporal...
Show moreThis thesis focuses on evaluation of joint occurrence of extreme precipitation and streamflow events at several hydrologic structures in South Florida. An analysis of twelve years storm events and their corresponding peak streamflow events during wet and dry season including annual peaks considering two seasons was performed first. Dependence analysis using time series data of precipitation and streamflow was carried out next. The analysis included use of storm events with different temporal lags from the time of occurrence of peak streamflow events. Bi-variate joint probability was found to be appropriate to analyze the joint occurrence of events. Evaluation of joint exceedence probabilities under two phases of Atlantic multidecadal oscillation (AMO) influencing south Florida was also evaluated. All methodologies are evaluated for application using observations at several structures in the case study region to provide advances and valuable insights on joint extremes of precipitation and streamflows.
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Date Issued
2013
PURL
http://purl.flvc.org/fcla/dt/3360954
Subject Headings
Climatic changes, Precipitation (Meterology), Streamflow, Environmental aspects
Format
Document (PDF)
Residential lawn water use and lawn irrigation practices
Title
Residential lawn water use and lawn irrigation practices: Wellington, Florida.
Creator
Survis, Felicia D., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description
Water conservation initiatives seldom quantify the volume of water that is at stake in lawn watering. In many communities, including those in South Florida, outdoor water use, which includes lawn irrigation, is not metered separately from indoor water use and is indistinguishable from indoor water usage. A large number of residents use self supply non-potable wells for lawn irrigation that are not regulated by the South Florida Water Management District. The result is that residential lawn...
Show moreWater conservation initiatives seldom quantify the volume of water that is at stake in lawn watering. In many communities, including those in South Florida, outdoor water use, which includes lawn irrigation, is not metered separately from indoor water use and is indistinguishable from indoor water usage. A large number of residents use self supply non-potable wells for lawn irrigation that are not regulated by the South Florida Water Management District. The result is that residential lawn water use is difficult to account for and quantify. This thesis project addressed these difficulties by combining semistructured interviews, daily watering observations and irrigation system audits to ascertain how much public supply water and self supply (well) water was being used for residential lawn irrigation. The study also examined lawn watering practices and how factors such as: precipitation, the minimum plant needs of St. Augstinegrass, and how local watering restrictions influenced watering behavior.
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Date Issued
2010
PURL
http://purl.flvc.org/FAU/2705082
Subject Headings
Lawns, Water resources development, Landscape irrigation, Water consumption, Municipal water supply
Format
Document (PDF)
evaluation of the certainty of system performance measures generated by the South Florida Water Management Model
Title
An evaluation of the certainty of system performance measures generated by the South Florida Water Management Model.
Creator
Trimble, Paul Joseph., Florida Atlantic University, Scarlatos, Panagiotis (Pete) D., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description
The South Florida Water Management Model was developed to evaluate proposed alternatives for the south Florida regional hydrologic system. The degree of certainty of the computed system performance measures is required to correctly apply these measures for evaluation and selection of appropriate water resources policies and investments. Initially, a sensitivity matrix is defined which summarizes the model output sensitivity to incremental changes of key parameters. The method of singular...
Show moreThe South Florida Water Management Model was developed to evaluate proposed alternatives for the south Florida regional hydrologic system. The degree of certainty of the computed system performance measures is required to correctly apply these measures for evaluation and selection of appropriate water resources policies and investments. Initially, a sensitivity matrix is defined which summarizes the model output sensitivity to incremental changes of key parameters. The method of singular value decomposition is applied to the sensitivity matrix to better understand relations between parameters and output variables. Finally, parameter uncertainty is compared to that of total predictive uncertainty of the system performance measures.
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Date Issued
1995
PURL
http://purl.flvc.org/fcla/dt/15200
Subject Headings
Hydrologic models, Water conservation--Florida, Water supply--Florida, Water quality management--Florida, South Florida Water Management District
Format
Document (PDF)
Beyond Water Restrictions: Informing Effective Lawn Watering Behavior
Title
Beyond Water Restrictions: Informing Effective Lawn Watering Behavior.
Creator
Survis, Felicia D., Root, Tara L., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description
Evaluating trends of historical rainfall on a weekly and seasonal basis is needed for optimizing the design and implementation of lawn water conservation strategies like outdoor water restrictions. While “day of the week” water restrictions are a typical strategy to limit the frequency and duration of urban lawn water use, they may not necessarily result in more conservative behaviors from end-users. Because weekly rainfall and local climate variables are seldom taken into account in water...
Show moreEvaluating trends of historical rainfall on a weekly and seasonal basis is needed for optimizing the design and implementation of lawn water conservation strategies like outdoor water restrictions. While “day of the week” water restrictions are a typical strategy to limit the frequency and duration of urban lawn water use, they may not necessarily result in more conservative behaviors from end-users. Because weekly rainfall and local climate variables are seldom taken into account in water restriction strategies, they are not connected to actual lawn water demand. However, since lawn water demand is directly related to weekly rainfall totals, not to a particular number of watering days per week, water restriction schedules have the potential to unintentionally promote overwatering. This study investigated the weekly patterns of average seasonal rainfall and evapotranspiration in South Florida to determine the typical variability of weekly net irrigation needs and found that typical wet season weekly rainfall often provides a significant amount of water to meet the demand of residential lawns and landscapes. This finding underscores opportunity to reduce supplemental overwatering in residential landscapes if watering guidelines were modified to recognize seasonal average weekly rainfall in this region This study also tested a rainfall-based water conservation strategy to determine if providing residents with information about how local rainfall could promote more effective lawn watering behavior than just water restrictions alone. Experimental households reduced lawn water use by up to 61% compared to the control group by the end of the study. These results demonstrate that the neighborhood “rain-watered lawn” signs helped experimental study group households become more aware of rainfall as the primary input of water to their lawns. This study also investigated the role that lawn irrigation from self-supplied sources plays in the urban lawn water demand and investigates how the lawn water use and lawn watering behaviors of households that source from self-supply differ from those who source from the public supply.
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Date Issued
2016
PURL
http://purl.flvc.org/fau/fd/FA00004710
Subject Headings
Landscape irrigation, Municipal water supply, South Florida Water Management District, Water conservation, Water consumption, Water resources development
Format
Document (PDF)
Population distribution analysis for water supply planning, using textural image classification of SPOT data in an integrated Geographical Information Systems (GIS)
Title
Population distribution analysis for water supply planning, using textural image classification of SPOT data in an integrated Geographical Information Systems (GIS).
Creator
Poudratchi, Ahmad., Florida Atlantic University, Roberts, Charles, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description
Protecting Natural Resources, such as drinking water in terms of quality and quantity, is one of the missions of South Florida Water Management District (SFWMD). Water Supply Planning is one of the many projects at the Planning Department of the SFWMD, in which sixteen counties are analyzed to determine the most accurate population distribution for water supply distribution among the water utility companies. This thesis examines the current methodology which is used at the SFWMD, and...
Show moreProtecting Natural Resources, such as drinking water in terms of quality and quantity, is one of the missions of South Florida Water Management District (SFWMD). Water Supply Planning is one of the many projects at the Planning Department of the SFWMD, in which sixteen counties are analyzed to determine the most accurate population distribution for water supply distribution among the water utility companies. This thesis examines the current methodology which is used at the SFWMD, and addresses its shortcomings. It then introduces a proposed methodology, to improve population distribution analysis, by incorporating satellite imagery. Textural classification of satellite imagery will be used to extract residential neighborhoods from non-residential areas. The resultant residential areas, which is in the form of raster data, then will be converted to a vector coverage to be utilized as an additional source of data. Incorporating satellite imagery eliminates the assumption of homogenous population distribution, which the current methodology is based on and consequently, leads to a more accurate population distribution methodology.
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Date Issued
1996
PURL
http://purl.flvc.org/fcla/dt/15254
Subject Headings
Water-supply--Florida--Statistics, Florida--Population--Statistics, Geographic information systems, South Florida Water Management District
Format
Document (PDF)
Civic environmentalism: A model for Everglades restoration and a sustainable South Florida
Title
Civic environmentalism: A model for Everglades restoration and a sustainable South Florida.
Creator
Jabour, Teresa U., Florida Atlantic University, Lenz, Timothy
Abstract/Description
The Everglades restoration is now the centerpiece for environmental policymaking in South Florida. The 1991 settlement of the Everglades lawsuit marked a new era of environmental politics known as civic environmentalism. Concepts of civic environmentalism are used in this study to determine if policies developed since the 1991 lawsuit settlement support a successful Everglades restoration and a sustainable South Florida, a vital connection that ensures the socio-economic health of the built...
Show moreThe Everglades restoration is now the centerpiece for environmental policymaking in South Florida. The 1991 settlement of the Everglades lawsuit marked a new era of environmental politics known as civic environmentalism. Concepts of civic environmentalism are used in this study to determine if policies developed since the 1991 lawsuit settlement support a successful Everglades restoration and a sustainable South Florida, a vital connection that ensures the socio-economic health of the built environment as well as the environmental health of South Florida's unique ecosystems. Indicators reveal that legislation supports a democratic process, but a nonformal model of civic environmentalism demonstrates that there are weaknesses in many areas, especially on the local level. Results of the study suggest that even though civic environmentalism prevails in some cases, stronger policies that connect both the built and natural environment will be necessary to ensure a successful Everglades restoration and a sustainable South Florida.
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Date Issued
2003
PURL
http://purl.flvc.org/fcla/dt/13014
Subject Headings
South Florida Water Management District (Fla), Restoration ecology--Florida--Everglades, Sustainable development--Florida, Environmental policy--Florida--Everglades
Format
Document (PDF)
Characteristics Affecting Prey Vulnerability and Avian Habitat Selection in the Florida Everglades
Title
Characteristics Affecting Prey Vulnerability and Avian Habitat Selection in the Florida Everglades.
Creator
Harris, Rachael L., Gawlik, Dale E., Florida Atlantic University
Abstract/Description
The vulnerability of prey to capture plays a fundamental role in determining overall prey availability for wading birds. Structural complexity can act to decrease prey vulnerability and influence foraging habitat selection. To determine how structural complexity can affect habitat selection I conducted a use vs. availability study throughout the Florida Everglades in 2005 and 2006. Results indicated that wading birds chose foraging sites that had less emergent vegetation and a thicker...
Show moreThe vulnerability of prey to capture plays a fundamental role in determining overall prey availability for wading birds. Structural complexity can act to decrease prey vulnerability and influence foraging habitat selection. To determine how structural complexity can affect habitat selection I conducted a use vs. availability study throughout the Florida Everglades in 2005 and 2006. Results indicated that wading birds chose foraging sites that had less emergent vegetation and a thicker flocculent layer relative to random sites. Submerged vegetation, and the height of emergent vegetation did not affect wading bird site selection. A difference in habitat selection between years was evident due to hydrological conditions. Ideal hydrological conditions are probably the most important parameter to wading bird success. Other factors affecting prey vulnerability became increasingly important in years of poor hydrology, probably because the penalty for choosing low quality foraging habitat would be greater than in years of more optimal conditions.
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Date Issued
2007
PURL
http://purl.flvc.org/fau/fd/FA00000754
Subject Headings
Everglades (Fla), South Florida Water Management District (Fla ), Wildlife management--Florida--Everglades, Bird populations--Florida--Everglades, Water birds--Florida--Everglades, Wetland ecology--Florida--Everglades
Format
Document (PDF)
Interview with Joe Schweigart – ca. 2008
Title
Interview with Joe Schweigart – ca. 2008.
Creator
Schweigart, Joe (Interviewee), Addeo, David (Interviewer)
Date Issued
2008-02-18
PURL
http://purl.flvc.org/fau/fd/FADT78736
Subject Headings
South Florida Water Management District (Fla.), Everglades (Fla.), Florida -- Environmental conditions, Water resources development -- Environmental aspects -- Florida, Oral histories --Florida, Oral history
Format
Set of related objects
Investigation of flow patterns using geochemical tracers in the Floridan aquifer system, Naples, Florida
Title
Investigation of flow patterns using geochemical tracers in the Floridan aquifer system, Naples, Florida.
Creator
Rectenwald, E. Edward., Florida Atlantic University, Warburton, David L.
Abstract/Description
This study investigated flow patterns in the FAS and tested Kohout's theory of "cyclic flow" in the vicinity of Naples, Florida. Temperature logs were analyzed to identify a reverse geothermal gradient in the Floridan aquifer system. The geochemical analysis consisted of inorganics (major cations and anions), stable isotopes (2H, 18O), radiocarbon (14C), and noble gas (He, Ne, Ar, Kr, Xe) data. The temperature logs were inconclusive in identifying a reverse geothermal gradient in the study...
Show moreThis study investigated flow patterns in the FAS and tested Kohout's theory of "cyclic flow" in the vicinity of Naples, Florida. Temperature logs were analyzed to identify a reverse geothermal gradient in the Floridan aquifer system. The geochemical analysis consisted of inorganics (major cations and anions), stable isotopes (2H, 18O), radiocarbon (14C), and noble gas (He, Ne, Ar, Kr, Xe) data. The temperature logs were inconclusive in identifying a reverse geothermal gradient in the study area. The geochemical analysis suggests that within the FAS relatively old meteoric freshwater circulates in the UFA over relatively young seawater of the MCU and LFA. The analysis also supports the possibility of vertical flow from the LFA to the UFA in the study area along with ancient meteoric recharge into the UFA during the last glacial period. The study was inconclusive in identifying "cyclic flow" in the study area.
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Date Issued
2006
PURL
http://purl.flvc.org/fcla/dt/13356
Subject Headings
South Florida Water Management District (Fla ), Water quality--Florida--Naples--Measurement, Hydrogeology--Florida--Naples, Geomorphological tracers--Utilization, Groundwater flow--Florida--Naples
Format
Document (PDF)