• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 6
  • 2
  • Tagged with
  • 8
  • 8
  • 6
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Groundwater manganese study of the Stevens Point Airport wellfield /

Buettner, Michael W. January 2006 (has links) (PDF)
Thesis (M.S.)--University of Wisconsin--Stevens Point, 2006. / Includes bibliographical references (leaves 70-71).
2

The rate and timing of direct mountain front recharge in an arid environment, Silver Island Mountains, Utah /

Carling, Gregory T., January 2007 (has links) (PDF)
Thesis (M.S.)--Brigham Young University. Dept. of Geological Sciences, 2007. / Includes bibliographical references (p. 38-41).
3

A Study of the Precursors for Disinfection By-Products on the CAP Avra Valley Recharge Project

Lutz, Theresa Marie January 2000 (has links) (PDF)
Thesis (M.S. - Soil, Water and Environmental Sciences)--University of Arizona. / Includes bibliographical references (leaves 107-111)
4

Water reclamation in Thurston County a review of LOTT's planned class A water expansion /

Smith, Kathryn Ann. January 1900 (has links) (PDF)
Thesis (M.E.S.)--Evergreen State College, 2009. / Title from title screen (viewed 4/15/2010). Includes bibliographical references (leaves 63-67).
5

EVALUATION OF POTENTIAL 10 MGD GROUNDWATER SUPPLY FROM AQUIFERS IN GEAUGA COUNTY, OHIO

Alzahrani, Abdulaziz S. 03 August 2022 (has links)
No description available.
6

Caracterização quali-quantitativa da água do Rio Cascavel / Quali-quantitative characterization of the water of the cascavel river

Covatti, Joane Aura Cechet 24 July 2006 (has links)
Made available in DSpace on 2017-07-10T19:25:23Z (GMT). No. of bitstreams: 1 JOANE AURA CECHET COVATTI.pdf: 4920808 bytes, checksum: ac54a92aaee26731f8767275ebe2814d (MD5) Previous issue date: 2006-07-24 / This work had as objective characterizes the water of the basin hydrographic of the Cascavel River, in their quali-quantitative aspects. The river that is born in the urban area, includes an area of drainage of 50,11 Km2 and he/she has a length of 17,5 km. With maximum altitude of 767 m, minimum altitude of 18 m and a flow of 973,00 m3/h and flow of reception 345,00 m3/h. Her geographical location is among the parallel ones 24o32' and 25o17' of South latitude and the meridians 53o05' and 53o50' of longitude West. The focus of this study is the spring basin that has their East, in the area of the municipal lake, until the point of reception of water of the Company of Sanitation of Paraná - SANEPAR, before the point of affluence of the Quati River and of the Peroba River and deságüe in Andrade River. For the quantitative analysis, a vertical ruler was used in the water (linímetro) and regular observation of the level, in the section of exit of the study area. For the space qualitative analysis, a method of collections periodic samples of the turbidez parameters, color, pH, MO, Nitrate, DBO, DQO, total solids and match, in 4 points, along Cascavel River, in the period: of March of 2004 to May of 2006. For the temporary qualitative analysis a method of collections of daily samples was used, in the period of January of 2004 to May of 2006, of the turbidez parameters, color, pH, MO, alkalinity and iron, in the point of collection 4 - Reception of SANEPAR, with base in the suitable methodologies for the Standard Methods. The parameters used for analyses were them based in the use of the body hidric, aided by the legislation that establishes classification and monitoramento, of the bodies hidrics, Resolution Conama 357/2005. The analysis of the results showed that there is variability in the flow of the river, for factors that you/they also commit the environmental quality, such as: retreat of the vegetable covering, waterproofing of the soil for the occupation of the environs and garbage release, added to the sanded. Those results, in her width, they can come to be used as instrument for the definition of priorities as for the guidelines to subsidize a program of administration hydrologic and for the establishment of united actions to preserve, to revitalize or to revert the environmental damages of the spring in the Cascavel River, because they favor the economical-social impact for the price of the tariff of water of SANEPAR, that tends to increase as adult is the application of chemical products in the clarification of the water, to be used in the public provisioning. / Este trabalho teve como objetivo caracterizar a água da bacia hidrográfica do rio Cascavel, em seus aspectos quali-quantitativos. O rio que nasce na área urbana, abrange uma área de drenagem de 50,11 Km2 e tem um comprimento de 17,5 km. Com altitude máxima de 767 m, altitude mínima de 18 m e uma vazão de 973,00 m3/h e vazão de captação 345,00 m3/h. Sua localização geográfica está entre os paralelos 24o32 e 25o17 de Latitude Sul e os meridianos 53o05 e 53o50 de Longitude Oeste. O foco deste estudo é a bacia de manancial que tem suas nascentes, na região do lago municipal, até o ponto de captação de água da Companhia de Saneamento do Paraná - SANEPAR, antes do ponto de afluência do rio Quati e do rio Peroba e deságüe no Rio Andrade. Para a análise quantitativa, foi utilizada uma régua vertical na água (linímetro) e observação regular do nível, na seção de saída da área de estudo. Para a análise qualitativa espacial, foi utilizado um método de coletas amostrais periódicas dos parâmetros de turbidez, cor, pH, MO, Nitrato, DBO, DQO, sólidos totais e fósforo, em 4 pontos, ao longo do Rio de Cascavel, no período: de março de 2004 a maio de 2006. Para a análise qualitativa temporal foi utilizado um método de coletas de amostras diárias, no período de janeiro de 2004 a maio de 2006, dos parâmetros de turbidez, cor, pH, MO, alcalinidade e ferro, no ponto de coleta 4 Captação da SANEPAR, com base nas metodologias indicadas pelo Standard Methods. Os parâmetros utilizados para análises foram os fundamentados no uso do corpo hídrico, amparado pela legislação que estabelece classificação e monitoramento, dos corpos hídricos, Resolução Conama 357/2005. A análise dos resultados mostrou que há variabilidade na vazão do rio, por fatores que também comprometem a qualidade ambiental, tais como: retirada da cobertura vegetal, impermeabilização do solo pela ocupação das imediações e lançamento de lixo, somados ao assoreamento. Esses resultados, em sua amplitude, podem vir a ser utilizados como instrumento para a definição de prioridades quanto às diretrizes para subsidiar um programa de gerenciamento hidrológico e para o estabelecimento de ações conjuntas para preservar, revitalizar ou reverter os danos ambientais do manancial, rio Cascavel, pois favorecem o impacto econômico-social pelo preço da tarifa de água da SANEPAR, que tende a aumentar quanto maior for a aplicação de produtos químicos na clarificação da água, a ser utilizada no abastecimento público.
7

Caracterização quali-quantitativa da água do Rio Cascavel / Quali-quantitative characterization of the water of the cascavel river

Covatti, Joane Aura Cechet 24 July 2006 (has links)
Made available in DSpace on 2017-05-12T14:48:46Z (GMT). No. of bitstreams: 1 JOANE AURA CECHET COVATTI.pdf: 4920808 bytes, checksum: ac54a92aaee26731f8767275ebe2814d (MD5) Previous issue date: 2006-07-24 / This work had as objective characterizes the water of the basin hydrographic of the Cascavel River, in their quali-quantitative aspects. The river that is born in the urban area, includes an area of drainage of 50,11 Km2 and he/she has a length of 17,5 km. With maximum altitude of 767 m, minimum altitude of 18 m and a flow of 973,00 m3/h and flow of reception 345,00 m3/h. Her geographical location is among the parallel ones 24o32' and 25o17' of South latitude and the meridians 53o05' and 53o50' of longitude West. The focus of this study is the spring basin that has their East, in the area of the municipal lake, until the point of reception of water of the Company of Sanitation of Paraná - SANEPAR, before the point of affluence of the Quati River and of the Peroba River and deságüe in Andrade River. For the quantitative analysis, a vertical ruler was used in the water (linímetro) and regular observation of the level, in the section of exit of the study area. For the space qualitative analysis, a method of collections periodic samples of the turbidez parameters, color, pH, MO, Nitrate, DBO, DQO, total solids and match, in 4 points, along Cascavel River, in the period: of March of 2004 to May of 2006. For the temporary qualitative analysis a method of collections of daily samples was used, in the period of January of 2004 to May of 2006, of the turbidez parameters, color, pH, MO, alkalinity and iron, in the point of collection 4 - Reception of SANEPAR, with base in the suitable methodologies for the Standard Methods. The parameters used for analyses were them based in the use of the body hidric, aided by the legislation that establishes classification and monitoramento, of the bodies hidrics, Resolution Conama 357/2005. The analysis of the results showed that there is variability in the flow of the river, for factors that you/they also commit the environmental quality, such as: retreat of the vegetable covering, waterproofing of the soil for the occupation of the environs and garbage release, added to the sanded. Those results, in her width, they can come to be used as instrument for the definition of priorities as for the guidelines to subsidize a program of administration hydrologic and for the establishment of united actions to preserve, to revitalize or to revert the environmental damages of the spring in the Cascavel River, because they favor the economical-social impact for the price of the tariff of water of SANEPAR, that tends to increase as adult is the application of chemical products in the clarification of the water, to be used in the public provisioning. / Este trabalho teve como objetivo caracterizar a água da bacia hidrográfica do rio Cascavel, em seus aspectos quali-quantitativos. O rio que nasce na área urbana, abrange uma área de drenagem de 50,11 Km2 e tem um comprimento de 17,5 km. Com altitude máxima de 767 m, altitude mínima de 18 m e uma vazão de 973,00 m3/h e vazão de captação 345,00 m3/h. Sua localização geográfica está entre os paralelos 24o32 e 25o17 de Latitude Sul e os meridianos 53o05 e 53o50 de Longitude Oeste. O foco deste estudo é a bacia de manancial que tem suas nascentes, na região do lago municipal, até o ponto de captação de água da Companhia de Saneamento do Paraná - SANEPAR, antes do ponto de afluência do rio Quati e do rio Peroba e deságüe no Rio Andrade. Para a análise quantitativa, foi utilizada uma régua vertical na água (linímetro) e observação regular do nível, na seção de saída da área de estudo. Para a análise qualitativa espacial, foi utilizado um método de coletas amostrais periódicas dos parâmetros de turbidez, cor, pH, MO, Nitrato, DBO, DQO, sólidos totais e fósforo, em 4 pontos, ao longo do Rio de Cascavel, no período: de março de 2004 a maio de 2006. Para a análise qualitativa temporal foi utilizado um método de coletas de amostras diárias, no período de janeiro de 2004 a maio de 2006, dos parâmetros de turbidez, cor, pH, MO, alcalinidade e ferro, no ponto de coleta 4 Captação da SANEPAR, com base nas metodologias indicadas pelo Standard Methods. Os parâmetros utilizados para análises foram os fundamentados no uso do corpo hídrico, amparado pela legislação que estabelece classificação e monitoramento, dos corpos hídricos, Resolução Conama 357/2005. A análise dos resultados mostrou que há variabilidade na vazão do rio, por fatores que também comprometem a qualidade ambiental, tais como: retirada da cobertura vegetal, impermeabilização do solo pela ocupação das imediações e lançamento de lixo, somados ao assoreamento. Esses resultados, em sua amplitude, podem vir a ser utilizados como instrumento para a definição de prioridades quanto às diretrizes para subsidiar um programa de gerenciamento hidrológico e para o estabelecimento de ações conjuntas para preservar, revitalizar ou reverter os danos ambientais do manancial, rio Cascavel, pois favorecem o impacto econômico-social pelo preço da tarifa de água da SANEPAR, que tende a aumentar quanto maior for a aplicação de produtos químicos na clarificação da água, a ser utilizada no abastecimento público.
8

Hydrological and hydro-geological model of the Western Dead Sea catchment, Israel and West Bank

Sachse, Agnes Christiane Felicia 01 April 2016 (has links)
Groundwater is the only fresh water resource in the semi-arid to hyper-arid Western Dead Sea catchment. Due to exploitation of groundwater the water level is decreasing in the surrounding Cretaceous aquifer system and sustainable water management is needed in order to prevent the progressive yields and contamination of those water resources. In addition, the water level of the Dead Sea decreases dramatically by at least one meter per year. This is connected to channel off the water from the Jordan River to supply intensive agriculture in the semi-arid to hyper-arid region. Hydrological and hydro-geological analysis and modelling in arid regions, like the study area, frequently suffer from data scarcity and uncertainties regarding rainfall and discharge measurements. The study showed that spatial and temporal interpolations as well as additional methods (e.g. empirical relationships and simultaneous numerical approaches) were suitable tools to overcome data shortage for modelling. Water balances are the result of a calibrated model and are the basis for sustainable management of surface and subsurface water resources. The present study investigates beside the hydrological characterisation of selected sub-catchments (wadis) also the hydro-geology of the Judean limestone aquifer and calculates a comprehensive water balance of the entire western flank of the Dead Sea by the application of two numerical open source codes: OpenGeoSys (OGS) and J2000g. The calibrated two-dimensional hydrological model J2000g provides a 33 years time series of temporal and spatial distributed groundwater recharge for the numerical groundwater flow model of OGS. The mean annual groundwater recharge of 139.9 · 10^6 m^3ˑ a^-1 is nearly completely depleted by abstractions from pumping wells close to the replenishment area in the Judea Mountains.:Acknowledgements Abstract Nomenclature Content List of Figures List of Tables 1 Introduction 1.1 Motivation 1.2 State of the Field 1.3 General research questions 1.4 Challenges 1.5 Structure of the Thesis 2 Theory and Methods 2.1 Data analysis 2.2 Governing equations 2.2.1 Surface Flow - Hydrological Model: J2000g 2.2.2 Subsurface Flow - Groundwater Flow Model: OpenGeoSys 2.3 Groundwater recharge 3 Study area 3.1 Study site selection 3.2 Geography 3.2.1 Climate 3.2.2 Soils 3.2.3 Vegetation 3.2.4 Land use 3.3 Hydrology 3.3.1 Wadis 3.3.2 Flashfloods 3.3.3 Dead Sea 3.4 Geology 3.5 Hydro-geology 3.5.1 Springs 3.5.2 Well fields 4 Hydrological Model 4.1 Conceptual Model 4.2 Hydrological Model J2000g 4.2.1 Data base 4.2.2 Simulation results from J2000g 5 Structural geological model 5.1 Stratigraphy 5.2 Database 5.3 Workflow 6 Numerical groundwater flow model 6.1 Work flow of 2D and 3D meshing 6.2 Parametrisation 6.3 Boundary conditions 6.4 Model Set-up 6.5 Calibration of Steady-State model 6.6 Transient Model 6.6.1 Model assumptions 6.6.2 Challenges 6.6.3 Preliminary results 7 Conclusions and Outlook 7.1 Important results from the hydrological model 7.2 Important results from the geological structural model 7.3 Important results from the hydro-geological model 7.4 Deficiencies 7.5 Outlook References 8 Enclosed Publications

Page generated in 0.0788 seconds