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Title: Application of canal locations within grid cells to the study of surface water-groundwater interaction.
Creator: Sosnowski, Robert Joseph., Florida Atlantic University, Restrepo, Jorge I.
Abstract/Description: Within St. Lucie County, Florida, a network of canals has been cut to provide flood protection, drainage, and irrigation. Many of these canals maintain a permanent to semi-permanent hydraulic connection with the surficial aquifer. MODFLOW code was used to simulate St. Lucie County groundwater levels. One of stresses that contributed to the solution of the groundwater levels, was the volume of water that flowed into or out of the aquifer through the canal system. In MODFLOW, the flow...
Show moreWithin St. Lucie County, Florida, a network of canals has been cut to provide flood protection, drainage, and irrigation. Many of these canals maintain a permanent to semi-permanent hydraulic connection with the surficial aquifer. MODFLOW code was used to simulate St. Lucie County groundwater levels. One of stresses that contributed to the solution of the groundwater levels, was the volume of water that flowed into or out of the aquifer through the canal system. In MODFLOW, the flow calculation between a canal and the aquifer is independent of the canal's location within the grid cell. The flow calculation was modified to incorporate canal location. Simulation results showed 34 percent of the model area realized groundwater levels that were plus or minus two-tenths to one-half foot when compared to the original levels. These results can be significant for model applications such as wetland protection and salt water intrusion.
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Date Issued: 1999
PURL: http://purl.flvc.org/fcla/dt/15651
Subject Headings: Groundwater flow--Mathematical models, Canals--Florida--St Lucie County, Aquifers
Format: Document (PDF)

Title: Recognition and analysis of secondary depositional crusts in the surficial aquifer system of southeast Florida.
Creator: Krupa, Steven Louis, Florida Atlantic University, Finkl, Charles W.
Abstract/Description: This investigation identified, analyzed, characterized and correlated observed geophysical log "deflections" occurring at distinct depths in the sedimentary sequence and varying systematically with reference to the coastline. The deflections correspond to dense, hard crusts within the upper portions of the Surficial Aquifer System (SAS) of Southeast Florida. These crusts are proposed as zones of paleo-freshwater fluctuations within the aquifer. The secondary depositional crusts (SDC) have...
Show moreThis investigation identified, analyzed, characterized and correlated observed geophysical log "deflections" occurring at distinct depths in the sedimentary sequence and varying systematically with reference to the coastline. The deflections correspond to dense, hard crusts within the upper portions of the Surficial Aquifer System (SAS) of Southeast Florida. These crusts are proposed as zones of paleo-freshwater fluctuations within the aquifer. The secondary depositional crusts (SDC) have migrated vertically in response to sea level changes over thousands of years. Detailed continuous geological samples were collected from three boreholes in a contamination investigation in Delray Beach, Florida. These disturbed but representative samples were analyzed at the gamma log geophysical deflection points. Samples from each of the extant crusts were examined for grain characteristics; chemical analysis of adsorbed elements was performed, as well as stratigraphic and petrographic analyses (scanning electron and petrographic microscopy). Physical laboratory characteristics were calculated and sand/carbonate composition determined.
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Date Issued: 1999
PURL: http://purl.flvc.org/fcla/dt/15654
Subject Headings: Groundwater--Florida, Aquifers--Florida, Geophysical well logging--Florida
Format: Document (PDF)

Title: An evaluation of the U.S.E.P.A. model MULTIMED and applicability to hydrogeologic conditions in Florida.
Creator: Martin, Robert Floyd, Jr., Florida Atlantic University, Restrepo, Jorge I.
Abstract/Description: The U.S. Environmental Protection Agency's program, MULTIMED, was evaluated using a parametric analysis and result comparisons the with programs MODFLOW and MT3D. The validity and accuracy of the MULTIMED model results were determined and independent parameter sensitivities identified. The dilution calculations in the model are sensitive to several parameters. A parameter determined critical is the seepage velocity which is used in the transport calculations of the model, as well as a "Near...
Show moreThe U.S. Environmental Protection Agency's program, MULTIMED, was evaluated using a parametric analysis and result comparisons the with programs MODFLOW and MT3D. The validity and accuracy of the MULTIMED model results were determined and independent parameter sensitivities identified. The dilution calculations in the model are sensitive to several parameters. A parameter determined critical is the seepage velocity which is used in the transport calculations of the model, as well as a "Near Mixing Factor". Under Florida's aquifer conditions, the Near Mixing Factor as calculated in the model is susceptible to overestimating the dilution of the initial concentration due to relatively high recharge rates and low hydraulic conductivities. Florida's aquifer conditions also typically result in Near Mixing Factor values greater than one, for which the model's analytical solutions are not valid.
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Date Issued: 1995
PURL: http://purl.flvc.org/fcla/dt/15158
Subject Headings: Sanitary landfills--Leaching--Computer simulation, Environmental Sciences, Groundwater flow--Florida
Format: Document (PDF)

Title: MODFLOW wetland module which relates interactions with aquifers and sloughs.
Creator: Montoya, Angela M., Florida Atlantic University, Restrepo, Jorge I.
Abstract/Description: Natural and anthropogenic processes have altered wetland habitats. The simulation of surface water movement and its interaction with groundwater and slough channels as it relates to wetlands is very important for many projects. Currently, most groundwater flow models incorporate the wetland system as general head boundary nodes. The purpose of this research was to develop a computer package for the widely used MODFLOW code to simulate three-dimensional wetland flow hydroperiods interacting...
Show moreNatural and anthropogenic processes have altered wetland habitats. The simulation of surface water movement and its interaction with groundwater and slough channels as it relates to wetlands is very important for many projects. Currently, most groundwater flow models incorporate the wetland system as general head boundary nodes. The purpose of this research was to develop a computer package for the widely used MODFLOW code to simulate three-dimensional wetland flow hydroperiods interacting with aquifers and slough channels. The groundwater flow model was used to reproduce surface water flow process through wetlands, estimating new flow rates and values using a Manning type of equation. This package represents flow routing, the export/import of water, and the evapotranspiration from wetlands during different hydroperiods. The verification procedure for the numerical solution was based on a test-case that was solved using a two-dimensional surface water model. This test-case example is a transient solution to the diffusion equation starting with initial conditions depicted by a sinusoidal water surface profile and a flat bottom.
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Date Issued: 1997
PURL: http://purl.flvc.org/fcla/dt/15440
Subject Headings: Groundwater flow--Models, Wetlands--Mathematical models, Aquifers, Hydrologic models
Format: Document (PDF)

Title: The correlations between OSTDS sites and the pollution of the surface water bodies in Broward County.
Creator: Rocher, Yvel, Bloetscher, Frederick, Florida Atlantic University, College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
Abstract/Description: Sampling data of many surface water bodies in Broward County tend to reveal abnormal levels of bacterial concentrations for total coliform, Escherichia coli and Enterococcus. Given the presence of septic systems in geohydrologically sensitive areas throughout the County, several studies (Morin 2005 and Bocca 2007) suggested a correlation in the high bacterial densities and the septic sites.
Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004324, http://purl.flvc.org/fau/fd/FA00004324
Subject Headings: Bacterial pollution of water, Groundwater -- Pollution, Pathogenic microorganisms -- Detection, Sewage disposal, Sewerage, Water -- Pollution -- Point source identification, Water quality -- Management
Format: Document (PDF)

Title: A study of the relationships between historical land use and petroleum contamination in southeastern Palm Beach County, Florida.
Creator: Peterson, Andrew Brian., Florida Atlantic University, Finkl, Charles W.
Abstract/Description: Protection of groundwater resources in southeastern Florida is essential because of increasing demands on water quality and supply. Because water is furnished to public and private water systems from production wells that tap the non-artesian surficial aquifer, contamination of groundwater from leaking petroleum storage tanks must be curtailed. In the study, a series of land use maps is developed based on aerial photographs (1970, 1984, and 1991) for a 40 square mile area in southeastern Palm...
Show moreProtection of groundwater resources in southeastern Florida is essential because of increasing demands on water quality and supply. Because water is furnished to public and private water systems from production wells that tap the non-artesian surficial aquifer, contamination of groundwater from leaking petroleum storage tanks must be curtailed. In the study, a series of land use maps is developed based on aerial photographs (1970, 1984, and 1991) for a 40 square mile area in southeastern Palm Beach County, Florida. The locations of petroleum storage tank systems and contaminated sites are mapped. The point biserial correlation coefficient is used to examine the strength of the relationships between historical land use, storage tank system capacity, and the presence of petroleum. contamination. The results indicate no correlation between the intensity of urbanization (historical land use) and petroleum contamination and positive correlation between petroleum storage system capacity and petroleum contamination.
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Date Issued: 1995
PURL: http://purl.flvc.org/fcla/dt/15162
Subject Headings: Land use--Florida--Palm Beach County, Groundwater, Petroleum products--Underground storage--Environmental aspects, Oil pollution of soils
Format: Document (PDF)

Title: Risk of injection using reclaimed water for aquifer recharge using rotavirus as surrogate contaminant.
Creator: Phonpornwithoon, Pollop, Bloetscher, Frederick, Florida Atlantic University, College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
Abstract/Description: Groundwater aquifers are precious resources that has been serving human consumption for many centuries. This resource is pristine in comparison with surface waters such as lakes and canals, however, as population grows exponentially so does the demand for groundwater and the need to study the potential of groundwater replenishment programs. The injection of treated water or wastewater into an aquifer is a method to protect this resource for current and future generations. Health concerns...
Show moreGroundwater aquifers are precious resources that has been serving human consumption for many centuries. This resource is pristine in comparison with surface waters such as lakes and canals, however, as population grows exponentially so does the demand for groundwater and the need to study the potential of groundwater replenishment programs. The injection of treated water or wastewater into an aquifer is a method to protect this resource for current and future generations. Health concerns would be expected since migration of water of “impaired quality” can affect the drinking water by contamination. Regulatory barriers resulting from the perceived risks of adverse health effects from pathogens such as viruses have limited the concept of this impaired water resources from being used for groundwater replenishment programs. The objective of this study is to examine the risk assessment using computational modeling with MODFLOW and MT3D groundwater transport simulation. The results from the simulation showed that after two years, the risk of contamination based on concentration contours from the injection well to the production wellfields for the City of Hollywood stabilized below 10- 6. The risk assessment provided important aspect to demonstrate the concept of using injection of treated water as an option for groundwater replenishment.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004317, http://purl.flvc.org/fau/fd/FA00004317
Subject Headings: Aquifer storage recovery, Artificial grounddwater recharge, Drinking water -- Contamination, Environmental health -- Mathematical models, Groundwater -- Pollution -- Mathematical models, Health risk assessment, Viral pollution of water
Format: Document (PDF)

Title: Analysis of Backgroundwater Chemistry and Local Hydrologic Conditions ofPondhawk Natural Area Pre-Wetland Construction.
Creator: Carlson, Eric Sven, Root, Tara L., Florida Atlantic University
Abstract/Description: This thesis evaluates the water chemistry and hydrology of an urban environmental preserve in advance of wetland construction. Pondhawk Natural Area (PNA) is located in densely populated Palm Beach County, Florida and was acquired through the County's Environmentally Sensitive Lands Acquisition Program as a protected natural area. In an effort to restore the natural area to pre-development conditions Palm Beach County will construct a wetland in the area where hydric conditions persisted...
Show moreThis thesis evaluates the water chemistry and hydrology of an urban environmental preserve in advance of wetland construction. Pondhawk Natural Area (PNA) is located in densely populated Palm Beach County, Florida and was acquired through the County's Environmentally Sensitive Lands Acquisition Program as a protected natural area. In an effort to restore the natural area to pre-development conditions Palm Beach County will construct a wetland in the area where hydric conditions persisted prior to the extensive canal construction that lowered groundwater levels. Results of this study wi II provide initial characterization of hydrology and water quality of PNA before wetland construction and lay the groundwork for future monitoring and improvements.
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Date Issued: 2008
PURL: http://purl.flvc.org/fau/fd/FA00000730
Subject Headings: Soil chemistry--Florida--Palm Beach County, Water chemistry--Florida--Palm Beach County, Wetland hydrology--Florida--Palm Beach County, Groundwater flow--Florida--Palm Beach County
Format: Document (PDF)

Title: Methodology for Estimating the Magnitude, and Spatial and Temporal Variation of Irrigation Demand on the Floridan Aquifer System within the Upper East Coast Planning Area, Florida.
Creator: Quinn, Elizabeth, Restrepo, Jorge I., Florida Atlantic University
Abstract/Description: A method was developed to estimate the magnitude and spatio-temporal variation of agricultural demand from the Floridan Aquifer System (F AS) in the Upper East Coast (UEC) planning area, Florida. The Irrigation Program (IP) is designed to compute total irrigation requirements and model demand from permitted water sources. Historical Natural Resources Conservation Service well-flow data are used in calibration. The IP is most sensitive to spatio-temporal variation of water levels in major...
Show moreA method was developed to estimate the magnitude and spatio-temporal variation of agricultural demand from the Floridan Aquifer System (F AS) in the Upper East Coast (UEC) planning area, Florida. The Irrigation Program (IP) is designed to compute total irrigation requirements and model demand from permitted water sources. Historical Natural Resources Conservation Service well-flow data are used in calibration. The IP is most sensitive to spatio-temporal variation of water levels in major canals and the range of days for the wet and dry season. The magnitude of deficit in simulated and historical withdrawal from the FAS is 199,000 fe/day. This is within 7% of historical data. A correction factor should be introduced when the IP is linked to a groundwater flow model.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00000816
Subject Headings: Groundwater flow--Florida--Upper East Coast--Mathematical models, Hydrogeology--Florida--Upper East Coast, Irrigation water--Mathematical models
Format: Document (PDF)

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)

Title: Geochemical conditions and groundwater-surface interactions within a municipal well field in Miami-Dade County, Florida.
Creator: Antolino, Dominick J., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: This thesis presents a preliminary study on geochemical conditions within the Snapper Creek well field in Miami-Dade County, Florida. The study investigates the background groundwater chemistry within the Biscayne aquifer in order to provide information on the geochemical processes and water-rock interactions within the study site. In conjunction with hydraulic gradient information, major ion chemistry and deuterium and oxygen-18 data were used as environmental tracers to help describe the...
Show moreThis thesis presents a preliminary study on geochemical conditions within the Snapper Creek well field in Miami-Dade County, Florida. The study investigates the background groundwater chemistry within the Biscayne aquifer in order to provide information on the geochemical processes and water-rock interactions within the study site. In conjunction with hydraulic gradient information, major ion chemistry and deuterium and oxygen-18 data were used as environmental tracers to help describe the groundwater-surface water interactions between the well field and the Snapper Creek canal. Hydrologic data show there is potential for natural groundwater recharge from the canal within the shallow flow zone of the Biscayne aquifer and chemical data show evidence of canal-groundwater mixing within this zone. The limitations for the v environmental tracers employed within the study are addressed, as well as recommendations for further research involving natural geochemical tracers and groundwater-surface water interactions near municipal well fields. This study was part of a larger effort being conducted by the U.S. Geological Survey in order to assess municipal well field pumping effects on the Snapper Creek (C-2) canal.
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Date Issued: 2011
PURL: http://purl.flvc.org/FAU/3329830
Subject Headings: Groundwater flow, Simulations, Groundwater flow, Hydrogeology, Aquifiers
Format: Document (PDF)

Title: Three-dimensional geomodeling to identify spatial relations between lithostratigraphy and porosity in the karst carbonate biscayne aquifer, southeastern Florida.
Creator: Westcott, Richard, Root, Tara L., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: In southeastern Florida, the majority of drinking water comes from the Biscayne aquifer. This aquifer is comprised of heterogeneous limestones, sandstones, sand, shell and clayey sand with zones of very high permeability. Visualizing the spatial variations in lithology, porosity and permeability of heterogeneous aquifers, like the Biscayne, can be difficult using traditional methods of investigation. Using the Roxar IRAP RMS software multi-layered 3D conceptual geomodels of the lithology,...
Show moreIn southeastern Florida, the majority of drinking water comes from the Biscayne aquifer. This aquifer is comprised of heterogeneous limestones, sandstones, sand, shell and clayey sand with zones of very high permeability. Visualizing the spatial variations in lithology, porosity and permeability of heterogeneous aquifers, like the Biscayne, can be difficult using traditional methods of investigation. Using the Roxar IRAP RMS software multi-layered 3D conceptual geomodels of the lithology, cyclostratigraphy and porosity were created in a portion of the Biscayne aquifer. The models were built using published data from borehole geophysical measurements, core samples, and thin sections. Spatial relations between lithology, cyclostratigraphy, porosity, and preferential flow zones were compared and contrasted to better understand how these geologic features were inter-related. The models show local areas of differing porosity within and cross-cutting different cycles and lithologies. Porosity in the Biscayne aquifer study area follows a hierarchy attributed to lithofacies with a pattern of increasing porosity for the high frequency cycles. This modeling improves understanding of the distribution and interconnectedness of preferential flow zones, and is thus an invaluable tool for future studies of groundwater flow and groundwater contamination in the Biscayne aquifer.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004337, http://purl.flvc.org/fau/fd/FA00004337
Subject Headings: Biscayne Aquifer (Fla.), Geophysics -- Florida -- Miami Dade County, Groundwater flow -- Florida -- Miami Dade County -- Mathematical models, Hydrology, Karst -- Florida -- Miami Dade County, Porosity, Sedimentary basins -- Florida -- Biscayne Aquifer, Sedimentology -- Statistical methods, Soil permeability
Format: Document (PDF)

Title: The effects of on-site sewage treatment and disposal systems on the relief canals of Indian River County, the St. Sebastian River, and the central Indian River lagoon.
Creator: Tarnowski, Marie E., Lapointe, Brian E., Florida Atlantic University, Charles E. Schmidt College of Science, Center for Environmental Studies
Abstract/Description: Effluent from on-site sewage treatment and disposal systems (OSTDS) is generally known to impact groundwaters and surface waters with nitrogen (N) and phosphorus (P) and other contaminants. Little research has quantified this problem along the Indian River Lagoon (IRL), especially in Indian River County (IRC) where there are 26,660 active systems. This study assessed the effects of OSTDS on contamination of surface and groundwaters along three urbanized canals and the St. Sebastian River in...
Show moreEffluent from on-site sewage treatment and disposal systems (OSTDS) is generally known to impact groundwaters and surface waters with nitrogen (N) and phosphorus (P) and other contaminants. Little research has quantified this problem along the Indian River Lagoon (IRL), especially in Indian River County (IRC) where there are 26,660 active systems. This study assessed the effects of OSTDS on contamination of surface and groundwaters along three urbanized canals and the St. Sebastian River in IRC, all of which flow into the Central IRL. Multiple lines of evidence were used to define the source of the nutrient loadings including the novel approach of using the artificial sweetener, sucralose, as an indicator of human sewage impact. Results indicate that areas with high densities of OSTDS are contributing N to surface waters and elevating N:P ratios through submarine groundwater discharge and promoting eutrophication in the Central IRL.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004335, http://purl.flvc.org/fau/fd/FA00004335
Subject Headings: Groundwater -- Pollution, Indian River (Lagoon) -- Environmental aspects, Indian River County (Fla.) -- Environmental aspects, Nutrient pollution of water, Saint Sebastian River (Fla.) -- Environmental aspects, Sewage disposal, Sewerage, Water -- Pollution -- Point source identification, Water quality -- Management
Format: Document (PDF)

FAU Theses and Dissertations (25)	+ -
HBOI Faculty Contributions (7)	+ -
HBOI Technical Reports (1)	+ -

Groundwater (7)	+ -
Groundwater flow (4)	+ -
Groundwater flow--Computer simulation (3)	+ -
Groundwater flow--Mathematical models (3)	+ -
Sewage disposal (3)	+ -

Trichloroethylene (3)	+ -
Aquifers (2)	+ -
Aquifers--Florida (2)	+ -
Groundwater -- Pollution (2)	+ -
Groundwater--Florida (2)	+ -
Groundwater--Pollution (2)	+ -
Groundwater--Purification--Trichloroethylene removal (2)	+ -
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Pollutants (2)	+ -
Sewerage (2)	+ -
Water -- Pollution -- Point source identification (2)	+ -
Water quality -- Management (2)	+ -
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Florida (2)	+ -
Miami-Dade County (1)	+ -
Snapper Creek (C-2) canal (1)	+ -
United States (1)	+ -

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article (7)	+ -
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