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Predicting Impacts Of Water Management In Coastal Zones By Hydraulic And Salinity Modeling, C. T. Hoanh, N. D. Phong, J. W. Gowing, T. P. Tuong, N. X. Hien, N. D. Dat
Predicting Impacts Of Water Management In Coastal Zones By Hydraulic And Salinity Modeling, C. T. Hoanh, N. D. Phong, J. W. Gowing, T. P. Tuong, N. X. Hien, N. D. Dat
International Congress on Environmental Modelling and Software
Tidal effects and salinity intrusion are two defining characteristics of coastal zones. The firstcauses complex variations of water level and unsteady flows in the river and canal network. The second is aconstraint to agriculture and freshwater fishery, but provides suitable conditions for brackish wateraquaculture. These phenomena bring about conflicts in the development of agriculture, fishery andaquaculture due to different requirements of water quality. Hydraulic and salinity modeling have beendeveloped and applied to simulate tidal propagation and salinity intrusion, and to analyze the effects of watermanagement on hydrological and salinity conditions that control land use in the coastal zones. This paperpresents …
Impacts Of Agriculture And Dairy Farming On Groundwater Quality: An Optimization Problem, Tomaz Dentinho, R. Minciardi, M. Robba, Roberto Sacile, V. Silva
Impacts Of Agriculture And Dairy Farming On Groundwater Quality: An Optimization Problem, Tomaz Dentinho, R. Minciardi, M. Robba, Roberto Sacile, V. Silva
International Congress on Environmental Modelling and Software
A decision model for groundwater quality preservation in areas affected by intensive agriculture and dairy farming, with specific reference to the Azores islands, is presented. In these islands, the exigency to find appropriate instruments to support decisions in Integrated Water Management (IWM) is particularly felt because the increase of tourism and the dairy farming have increased water demands and depletion of water quality. An optimization problem, in terms of decision variables, objectives, and constraints is formalized. The physical/chemical/ecological models are embedded as constraints in the decision model. Specifically, four types of models (hydraulic model, chemical model, agricultural model, and dairy …
Development Of An Integrated Decision Support System For Water Quality Control In The Upper Litani Basin, Lebanon, Hamed Assaf, Mark Saadeh
Development Of An Integrated Decision Support System For Water Quality Control In The Upper Litani Basin, Lebanon, Hamed Assaf, Mark Saadeh
International Congress on Environmental Modelling and Software
Compared to the limited water supply in the Middle East, Lebanon is perceived to be a water rich country. Yet, it faces a growing water supply problem due to many factors including increases in demand, inadequate investment in infrastructure, and deterioration of water quality. Being the foremost water resource in Lebanon, the Litani River is at the center of several major water supply and irrigation schemes. However, the river water quality is severely impacted by the current practice of releasing untreated sewage into its water body, specifically in its upper basin which is home to about half a million inhabitants. …
Decision Support For Nitrogen Management In Tile-Drained Agriculture, P. Heilman, R. W. Malone, L. Mac, Jerry L. Hatfield, L.R. Ahuja, J. Ayen, K. Boyle, R. Kanwar
Decision Support For Nitrogen Management In Tile-Drained Agriculture, P. Heilman, R. W. Malone, L. Mac, Jerry L. Hatfield, L.R. Ahuja, J. Ayen, K. Boyle, R. Kanwar
International Congress on Environmental Modelling and Software
Farmers will adopt alternative management systems to improve water quality more readily if they understand how those management alternatives affect the release of contaminants, crop yields, and ultimately, their net income. We propose a method to address these issues by integrating observed data from field experiments, a comprehensive simulation model, review by local experts, and application through a decision support system by technically trained conservationists. An example for reducing nitrogen loading from tile-drained corn and soybean production in Iowa demonstrates the approach. Fourteen years of observed data from 30 research plots on the Northeast Research and Demonstration Farm near Nashua, …
Ten Steps Applied To Development And Evaluation Of Process-Based Biogeochemical Models Of Estuaries, Barbara J. Robson, Ian T. Webster, David P. Hamilton, Terence Chan, Teemu Kokkonen
Ten Steps Applied To Development And Evaluation Of Process-Based Biogeochemical Models Of Estuaries, Barbara J. Robson, Ian T. Webster, David P. Hamilton, Terence Chan, Teemu Kokkonen
International Congress on Environmental Modelling and Software
The procedures involved in model development may be set out ten-step process, beginning with defining the purpose of the model and ending with evaluation of the appropriateness and utility of the completed model. This process, recently outlined by Jakerman et al. [2006], is often iterative as model development is a continuous process that refines and improves the indented capacity of the model. Here, we show how the ten steps of model development are relevant to process-based biogeochemical modeling of aquatic systems, using examples from two case studies: a model of phytoplankton succession and nutrient concentrations in the Swan-Canning Estuary (Western …
Application Of The Elbe-Dss To Water Quality Issues, Michael Matthies, Jürgen Berlekamp, N. Grafa, Sven Lautenbach
Application Of The Elbe-Dss To Water Quality Issues, Michael Matthies, Jürgen Berlekamp, N. Grafa, Sven Lautenbach
International Congress on Environmental Modelling and Software
The Decision Support System for the Elbe river basin (Elbe-DSS) was developed as a tool to assist water managers. A user can select various measures and compare them to evaluate their relative effectiveness in achieving a good ecological and chemical status of the Elbe and its tributaries. Two subsystems, the catchment and the river network, represent the whole German Elbe river basin (96.900 km2). This approach allows for better representation of management objectives, scenario development and decision-making. The implemented measures can be classified into the groups: ‘reduction of pollution from urban areas’, ‘modification of agricultural land allocation’, ‘changes in agricultural …
Predicting Impacts Of Water Management In Coastal Zones By Hydraulic And Salinity Modeling, C. T. Hoanh, N. D. Phong, J. W. Gowing, T. P. Tuong, N. X. Hien, N. D. Dat
Predicting Impacts Of Water Management In Coastal Zones By Hydraulic And Salinity Modeling, C. T. Hoanh, N. D. Phong, J. W. Gowing, T. P. Tuong, N. X. Hien, N. D. Dat
International Congress on Environmental Modelling and Software
Tidal effects and salinity intrusion are two defining characteristics of coastal zones. The firstcauses complex variations of water level and unsteady flows in the river and canal network. The second is aconstraint to agriculture and freshwater fishery, but provides suitable conditions for brackish wateraquaculture. These phenomena bring about conflicts in the development of agriculture, fishery andaquaculture due to different requirements of water quality. Hydraulic and salinity modeling have beendeveloped and applied to simulate tidal propagation and salinity intrusion, and to analyze the effects of watermanagement on hydrological and salinity conditions that control land use in the coastal zones. This paperpresents …
Impacts Of Agriculture And Dairy Farming On Groundwater Quality: An Optimization Problem, Tomaz Dentinho, R. Minciardi, M. Robba, Roberto Sacile, V. Silva
Impacts Of Agriculture And Dairy Farming On Groundwater Quality: An Optimization Problem, Tomaz Dentinho, R. Minciardi, M. Robba, Roberto Sacile, V. Silva
International Congress on Environmental Modelling and Software
A decision model for groundwater quality preservation in areas affected by intensive agriculture and dairy farming, with specific reference to the Azores islands, is presented. In these islands, the exigency to find appropriate instruments to support decisions in Integrated Water Management (IWM) is particularly felt because the increase of tourism and the dairy farming have increased water demands and depletion of water quality. An optimization problem, in terms of decision variables, objectives, and constraints is formalized. The physical/chemical/ecological models are embedded as constraints in the decision model. Specifically, four types of models (hydraulic model, chemical model, agricultural model, and dairy …
Development Of An Integrated Decision Support System For Water Quality Control In The Upper Litani Basin, Lebanon, Hamed Assaf, Mark Saadeh
Development Of An Integrated Decision Support System For Water Quality Control In The Upper Litani Basin, Lebanon, Hamed Assaf, Mark Saadeh
International Congress on Environmental Modelling and Software
Compared to the limited water supply in the Middle East, Lebanon is perceived to be a water rich country. Yet, it faces a growing water supply problem due to many factors including increases in demand, inadequate investment in infrastructure, and deterioration of water quality. Being the foremost water resource in Lebanon, the Litani River is at the center of several major water supply and irrigation schemes. However, the river water quality is severely impacted by the current practice of releasing untreated sewage into its water body, specifically in its upper basin which is home to about half a million inhabitants. …
Decision Support For Nitrogen Management In Tile-Drained Agriculture, P. Heilman, R. W. Malone, L. Mac, Jerry L. Hatfield, L.R. Ahuja, J. Ayen, K. Boyle, R. Kanwar
Decision Support For Nitrogen Management In Tile-Drained Agriculture, P. Heilman, R. W. Malone, L. Mac, Jerry L. Hatfield, L.R. Ahuja, J. Ayen, K. Boyle, R. Kanwar
International Congress on Environmental Modelling and Software
Farmers will adopt alternative management systems to improve water quality more readily if they understand how those management alternatives affect the release of contaminants, crop yields, and ultimately, their net income. We propose a method to address these issues by integrating observed data from field experiments, a comprehensive simulation model, review by local experts, and application through a decision support system by technically trained conservationists. An example for reducing nitrogen loading from tile-drained corn and soybean production in Iowa demonstrates the approach. Fourteen years of observed data from 30 research plots on the Northeast Research and Demonstration Farm near Nashua, …
Ten Steps Applied To Development And Evaluation Of Process-Based Biogeochemical Models Of Estuaries, Barbara J. Robson, Ian T. Webster, David P. Hamilton, Terence Chan, Teemu Kokkonen
Ten Steps Applied To Development And Evaluation Of Process-Based Biogeochemical Models Of Estuaries, Barbara J. Robson, Ian T. Webster, David P. Hamilton, Terence Chan, Teemu Kokkonen
International Congress on Environmental Modelling and Software
The procedures involved in model development may be set out ten-step process, beginning with defining the purpose of the model and ending with evaluation of the appropriateness and utility of the completed model. This process, recently outlined by Jakerman et al. [2006], is often iterative as model development is a continuous process that refines and improves the indented capacity of the model. Here, we show how the ten steps of model development are relevant to process-based biogeochemical modeling of aquatic systems, using examples from two case studies: a model of phytoplankton succession and nutrient concentrations in the Swan-Canning Estuary (Western …
Application Of The Elbe-Dss To Water Quality Issues, Michael Matthies, Jürgen Berlekamp, N. Grafa, Sven Lautenbach
Application Of The Elbe-Dss To Water Quality Issues, Michael Matthies, Jürgen Berlekamp, N. Grafa, Sven Lautenbach
International Congress on Environmental Modelling and Software
The Decision Support System for the Elbe river basin (Elbe-DSS) was developed as a tool to assist water managers. A user can select various measures and compare them to evaluate their relative effectiveness in achieving a good ecological and chemical status of the Elbe and its tributaries. Two subsystems, the catchment and the river network, represent the whole German Elbe river basin (96.900 km2). This approach allows for better representation of management objectives, scenario development and decision-making. The implemented measures can be classified into the groups: ‘reduction of pollution from urban areas’, ‘modification of agricultural land allocation’, ‘changes in agricultural …
Quantifying Chlorophyll A Content Through Remote Sensing: A Pilot Study Of Utah Lake, Tiana Davis
Quantifying Chlorophyll A Content Through Remote Sensing: A Pilot Study Of Utah Lake, Tiana Davis
Theses and Dissertations
Utah Lake is a really large but shallow lake located in the arid environment of the Western United States. Due to a variety of factors it is listed by the Environmental Protection Agency as an "impaired water body" and must be closely monitored. Because of its large extent and shallow depth the water quality is heterogeneous and can change rapidly. This means that traditional water quality monitoring methods, which require large investments in field personnel, equipment, and water sample analysis, cannot produce a model that is truly representative of the entire water body. This thesis examines the feasibility of using …
Estimating Limiting Nutrient Loadings In An Interacting Surface And Ground Water Basin
Estimating Limiting Nutrient Loadings In An Interacting Surface And Ground Water Basin
Journal of Spatial Hydrology
Watershed management requires the determination of both point and non-point sources of pollution within a watershed. The primary non-point source pollutants in a typical watershed are nutrients (mainly nitrogen and phosphorus), sediment, and pesticides. In the Snake River Basin, in Idaho, nutrients from non-point sources (primarily agricultural) are delivered to streams via storm water and irrigation runoff. However, the objectives of this study were to estimate the phosphorus loading from different sources in the Snake River Basin due to storm water events, to calculate the total nitrogen/phosphorus (TN/TP) ratios for land uses, and to compare and a precipitation runoff model …