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Full-Text Articles in Physical Sciences and Mathematics
A Comparison Between Heuristic, Statistical, And Data-Driven Methods In Landslide Susceptibility Assessment: An Application To The Briga And Giampilieri Catchments, Antonio Francipane, Elisa Arnone, Francesco Lo Conti, Claudio Puglisi, Leonardo Valerio Noto
A Comparison Between Heuristic, Statistical, And Data-Driven Methods In Landslide Susceptibility Assessment: An Application To The Briga And Giampilieri Catchments, Antonio Francipane, Elisa Arnone, Francesco Lo Conti, Claudio Puglisi, Leonardo Valerio Noto
International Conference on Hydroinformatics
Susceptibility assessment concerning the estimation of areas prone to landslide is one of the most useful approach in the analysis of landslide hazard. Over the last years, in an attempt to find the best approach to evaluate landslide susceptibility, many methods have been developed. Among these, the heuristic, the statistical, and the data-driven approaches are very widespread, and they all are based on the concept that the conditions which led to landslide movements in the past will control the probability of movement occurrence in the future. The main disadvantage of the heuristic approach is its high level of subjectivity, since …
Thermoclinic Assessment Of A Preliminary Circulation Model For Lake George In The Jefferson Project, Emanuele Ragnoli, Fearghal O Donncha, Jeffrey W. Short, Imad A. Hannoun, Sandra A. Nierzwicki-Bauer, Lloyd A. Treinish, Anthony P. Priano, Charles W. Boylen
Thermoclinic Assessment Of A Preliminary Circulation Model For Lake George In The Jefferson Project, Emanuele Ragnoli, Fearghal O Donncha, Jeffrey W. Short, Imad A. Hannoun, Sandra A. Nierzwicki-Bauer, Lloyd A. Treinish, Anthony P. Priano, Charles W. Boylen
International Conference on Hydroinformatics
The Jefferson Project is a collaboration between the Rensselaer Polytechnic Institute, IBM, and the FUND for Lake George aimed at understanding and managing complex factors (road salt, storm water runoff, invasive species) threatening Lake George, New York. Lake George is located about 80 km north of Albany in upstate New York and is known internationally for its water clarity. Understanding the hydrodynamics of the lake is fundamental for creation and maintenance of a research and monitoring program for the early detection of and response to adverse environmental and biological change. In this work a 3D circulation model of the lake …
Variational Data Assimilation With Telemac. Proof Of Concept For Model State Correction On The Berre Lagoon 3d-Model, Sophie Ricci, Andrea Piacentini, Anthony Weaver, Riadh Ata, Nicole Goutal
Variational Data Assimilation With Telemac. Proof Of Concept For Model State Correction On The Berre Lagoon 3d-Model, Sophie Ricci, Andrea Piacentini, Anthony Weaver, Riadh Ata, Nicole Goutal
International Conference on Hydroinformatics
TELEMAC is a component of the open-source integrated suite of solvers TELEMAC-MASCARET for use in the field of free-surface flow that solves the Reynolds Averaged Navier-Stokes equations. Generally speaking, uncertainties in the model formulation itself due to simplified physics and also in the input fields to the model such as the boundary conditions, initial conditions and hydraulic parameters translate into errors in the simulated hydraulic variables. In spite of significant advances in numerical schemes, description of geographical data (topography, bathymetry) and environmental conditions (hydrologycal and meteorological fields), the representation of the true state of a system as well as its …
Application Of Real-Time Control Strategy To Improve Nitrogen Removal In Wastewater Treatment, Qibin Wang, Qiuwen Chen, Jinfeng Ma, Qiang Xu
Application Of Real-Time Control Strategy To Improve Nitrogen Removal In Wastewater Treatment, Qibin Wang, Qiuwen Chen, Jinfeng Ma, Qiang Xu
International Conference on Hydroinformatics
Biological nitrogen removal is an important task in the wastewater treatment. However, the actual removal of total nitrogen (TN) in the wastewater treatment plant (WWTP) is often unsatisfactory due to several causes, one of which is the insufficient availability of carbon source. One possible approach to improve the nitrogen removal therefore is addition of external carbon source, while the amount of which is directly related to operation cost of a WWTP. It is obviously necessary to determine the accurate amount of addition of external carbon source according to the demand depending on the influent wastewater quality. This study focused on …
Gap Filling Based On A Quantile Perturbation Factor Technique, Diego E. Mora, Guido Wyseure, Patrick Willems
Gap Filling Based On A Quantile Perturbation Factor Technique, Diego E. Mora, Guido Wyseure, Patrick Willems
International Conference on Hydroinformatics
The presence of hydro-meteorological series gaps is a common problem in hydrological and water engineering applications. This is also the case for the Ecuadorian hydrological data-series, showing many gaps of short term duration. This study focuses on the Paute River Basin, in the Southern Ecuadorian Andes. It is one of the most monitored basins in Ecuador, with 25 rainfall observed sites during the period 1963 - 1990. These series suffer of about 20% of missing data. Two techniques were evaluated comparing their efficiency in the filling of missing gaps. The first one is a traditional one based on multiple linear …
A Hybrid Optimization Method For Real-Time Pump-Scheduling, Valeria Puleo, Mark Morley, Gabriele Freni, Dragan A. Savić
A Hybrid Optimization Method For Real-Time Pump-Scheduling, Valeria Puleo, Mark Morley, Gabriele Freni, Dragan A. Savić
International Conference on Hydroinformatics
Linear, non-linear and dynamic programming, heuristics and evolutionary computation are amongst the techniques which have been applied to obtain solutions to optimal pump-scheduling problems. Most of these either greatly simplify the complex water distribution system or require significant time to solve the problem. The scheduling of pumps is frequently undertaken in near-real time, in order to minimize cost and maximize energy savings. However, this requires a computationally efficient algorithm that can rapidly identify an acceptable solution. In this paper, a hybrid optimization model is presented, coupling Linear Programming and Genetic Algorithms. The resulting hybrid optimization model has demonstrated more rapid …
Inverse Modeling Of Groundwater System Using Coupled Pso-Mlpg Techniques, Swathi Boddula, Eldho T I
Inverse Modeling Of Groundwater System Using Coupled Pso-Mlpg Techniques, Swathi Boddula, Eldho T I
International Conference on Hydroinformatics
The effective management of groundwater systems relies on the adequate knowledge of its hydro-geological parameters. In large aquifer systems, it is often computationally expensive to estimate the spatially distributed aquifer parameters. Inverse modeling of these parameters are usually required in simulation of flow and contaminant transport in the problem domain for its meaningful system prediction. In the present study, a new approach for inverse modeling is adopted based on Meshless Local Petrov Galerkin (MLPG) flow simulation model which is coupled with Particle Swarm Optimization (PSO) model. MLPG is one of the meshless techniques, which are recently developed to solve many …
Distribution Of Hydrological Losses For Varying Rainfall And Antecedent Wetness Conditions, Sithara H P Walpita Gamage, Guna Hewa, Simon Beecham
Distribution Of Hydrological Losses For Varying Rainfall And Antecedent Wetness Conditions, Sithara H P Walpita Gamage, Guna Hewa, Simon Beecham
International Conference on Hydroinformatics
Hydrological loss is a vital component in many hydrological models, which are usedin forecasting floods and evaluating water resources for both surface and subsurface flows. Due to the complex and random nature of the rainfall runoff process, hydrological losses are not yet fully understood. Consequently, practitioners often use representative values of the losses for design applications such as rainfall-runoff modelling which has led to inaccurate quantification of water quantities in the resulting applications. The existing hydrological loss models must be revisited and modellers should be encouraged to utilise other available data sets. This study is based on three unregulated catchments …
Simulation Of Non-Point Source Pollution In Zhang River Basin, Xiaojuan Lin, Jinhui Huang
Simulation Of Non-Point Source Pollution In Zhang River Basin, Xiaojuan Lin, Jinhui Huang
International Conference on Hydroinformatics
Since 1987, the China Government started the “The Water Resource Protection and Management of Haihe River Basin” program aimed at tackling the problem of water pollution and realizing the comprehensive control of the ecosystem and water resources in the whole basin. This study aims to model one of the program’s catchments – Zhang River Basin (ZRB), which is a typical area with the striking water scarcity and water quality deterioration in Haihe River Basin (HRB). The distributed hydrological model SWAT(Soil and Water Assessment Tool) was used to simulate all related processes affecting water quantity, sediment, and nutrient loads in the …
Effective Ami System Based On Multi-Channel Cluster, Seok Rak Kang, Byoung Sup Shim, Seok Jun Choi, Ji Hyoung Yi, Kyung Taek Yum
Effective Ami System Based On Multi-Channel Cluster, Seok Rak Kang, Byoung Sup Shim, Seok Jun Choi, Ji Hyoung Yi, Kyung Taek Yum
International Conference on Hydroinformatics
Recently, high-efficient, next-generation infrastructure system using information communication technology is increasingly required to overcome limitation of water resource management, and Smart Water Grid is being developed to resolve imbalance by effectively allocating, managing and carrying water resources. Therefore, the article aims to enhance efficiency of management through physical, logical consumer channel clustering and reliability on metering reading data, and achieve expandability of wireless metering reading network through channel use that can be identified between proximate clusters, by suggesting channel set-up based on multichannel cluster mixed with network channel and group channel to resolve the problems stated above and implement various …
Ndvi With Artificial Neural Networks For Srtm Elevation Model Improvement – Hydrological Model Application, Dadiyorto Wendi, Yabin Sun, Chi Dung Doan, Shie-Yui Liong, Richard Sanders, Timothy Fewtrell
Ndvi With Artificial Neural Networks For Srtm Elevation Model Improvement – Hydrological Model Application, Dadiyorto Wendi, Yabin Sun, Chi Dung Doan, Shie-Yui Liong, Richard Sanders, Timothy Fewtrell
International Conference on Hydroinformatics
Digital elevation model (DEM) plays a substantial role in hydrological study, from understanding the catchment characteristics, setting up a hydrological model to mapping the flood risk in the region. Depending on the nature of study and its objectives, high resolution and reliable DEM is often desired to set up a sound hydrological model. However, such source of good DEM is not always available and it is generally high-priced. Obtained through radar based remote sensing, Shuttle Radar Topography Mission (SRTM) is a publicly available DEM with resolution of 92m outside US. It is a great source of DEM where no surveyed …
Data Mining For Design Flood Prediction, James E. Ball
Data Mining For Design Flood Prediction, James E. Ball
International Conference on Hydroinformatics
Design flood estimation remains a problem for many professionals involved in the management of rural and urban catchments. Advice is required regarding design flood characteristics for many design problems including the design of culverts and bridges necessary for cross drainage of transport routes, the design of urban drainage systems, the design of flood mitigation levees and other flood mitigation structures, design of dam spillways, and many environmental flow problems. When a risk based approach is adopted as the design paradigm, there is a need to predict both the magnitude of the hazard and the exceedance probability of the hazard. In …
Improving Sediment Transport Modelling By A Combination Of Field Data And Sensitivity Analysis, Tom Vanwalleghem, Juan Pablo Garcia, Juan Vicente Giráldez
Improving Sediment Transport Modelling By A Combination Of Field Data And Sensitivity Analysis, Tom Vanwalleghem, Juan Pablo Garcia, Juan Vicente Giráldez
International Conference on Hydroinformatics
Traditionally, the relationship between flow rate and sediment concentration in rivers has been estimated empirically. However, the problem of empirical data collection is that it is often difficult to cover the entire range of flow rates. Especially higher flow rates are often undersampled, which might lead to an underestimation of modelled sediment transport as flood events are often associated with important erosion events. In order to overcome this limitation, the introduction of the transport capacity concept can establish a safe upper bound of this sediment transport relationship. Nevertheless, given the number of implied variables in this equation, there is a …
Enhancing Water Quality Data Service Discovery And Access Using Standard Vocabularies, Jonathan Yu, Bruce A. Simons, Nicholas J. Car, Simon J.D. Cox
Enhancing Water Quality Data Service Discovery And Access Using Standard Vocabularies, Jonathan Yu, Bruce A. Simons, Nicholas J. Car, Simon J.D. Cox
International Conference on Hydroinformatics
There is a growing need for consistency across the publishing, discovering, integrating and access to scientific datasets, such as water quality data. Such datasets may have varying formats and service interfaces. The Network Common Data Form (NetCDF) is both a software package and a data format for producing array-oriented scientific data, which is commonly used to exchange data, including water quality data. NetCDF datasets are also published through service interfaces using the THREDDS data server. Alternatively water quality datasets can be encoded with standard XML formats such as WaterML 2.0, which can be published with services such as the Open …
Method Of Use And The Contribution Of Les 3d Modeling To Reproduce Velocity Distribution In Compound Channels, Salma Bellahcen, José Vazquez, Matthieu Dufresne, Robert Mose, Gilles Isenmann
Method Of Use And The Contribution Of Les 3d Modeling To Reproduce Velocity Distribution In Compound Channels, Salma Bellahcen, José Vazquez, Matthieu Dufresne, Robert Mose, Gilles Isenmann
International Conference on Hydroinformatics
Discharge determination in open channels is of great interest for water engineering, especially in compound channels where the main difficulty is the link between the measured velocity and the mean velocity. To do so, the 3D modeling is used as a tool to get the velocity distribution in compound channels. The purpose of this study is to compare through numerical simulations, the most common turbulence models such as K-epsilon and RSM to LES that is rarely used in this field, in order to show the efficiency of the LES model to reproduce the velocity distribution. The method used is the …
Modelling And Validation Of The Santa Catarina Island Bays Hydrodynamics Based On Astronomic Tides And Measured Tides, Luis Hamilton Pospissil Garbossa, Argeu Vanz, Luis Daniel Fachada Fernandes, Robson Ventura De Souza, Luiz Fernando Vianna, Guilherme Sabino Rupp
Modelling And Validation Of The Santa Catarina Island Bays Hydrodynamics Based On Astronomic Tides And Measured Tides, Luis Hamilton Pospissil Garbossa, Argeu Vanz, Luis Daniel Fachada Fernandes, Robson Ventura De Souza, Luiz Fernando Vianna, Guilherme Sabino Rupp
International Conference on Hydroinformatics
Santa Catarina Island bays (SCI bays) has a great economic and social importance in the region. With more than 700.000 habitants in its surroundings, besides touristic and fishery activities, it represents approximately 70% of the Brazilian bivalve shellfish production. In order to understand processes controlling the water quality and food availability, relevant for the shellfish production, it is unquestionably important to understand the main hydrodynamics patterns of SCI Bay. Thus, a hydrodynamic assessment study of the SCI bays was carried out using the numerical model MOHID. The model was implemented using bathymetric information obtained from Brazilian nautical charts, two tide …
A Novel Nested Dynamic Programming (Ndp) Algorithm For Multipurpose Reservoir Optimization, Blagoj Delipetrev, Andreja Jonoski, Dimitri P. Solomatine
A Novel Nested Dynamic Programming (Ndp) Algorithm For Multipurpose Reservoir Optimization, Blagoj Delipetrev, Andreja Jonoski, Dimitri P. Solomatine
International Conference on Hydroinformatics
We present a novel nDP (nested dynamic programming) algorithm for multipurpose reservoir optimization. The nDP algorithm is built from two algorithms: 1) dynamic programming (DP) and 2) nested optimal water allocation algorithm implemented with Simplex and quadratic Knapsack. The main objective function is to minimize the sum of weighted square deviations of each objective over the whole time horizon. Each objective is described with its water demand or target and its weights at each time step. The nDP algorithm begins with the DP optimization algorithm that at each DP transition executes the nested optimal water allocation algorithm. The optimal water …
Development Of A Cloud Computing Application For Water Resources Modelling And Optimization Based On Open Source Software, Blagoj Delipetrev, Andreja Jonoski, Dimitri P. Solomatine
Development Of A Cloud Computing Application For Water Resources Modelling And Optimization Based On Open Source Software, Blagoj Delipetrev, Andreja Jonoski, Dimitri P. Solomatine
International Conference on Hydroinformatics
Cloud computing is the latest advancement in Information and Communication Technology (ICT) that provides computing as a service or delivers computation, software, data access, storage service without end-user knowledge of the physical location and system configuration. Cloud computing, service oriented architecture and web geographic information systems are new technologies for development of the cloud computing application for water resources modelling and optimization. The cloud application is deployed and tested in a distributed computer environment running on three virtual machines (VMs). The cloud application has five web services for: (1) spatial data infrastructure – 1 (SDI), (2) SDI – 2, (3) …
A Particle Dispersion Model For Analysis Of Two-Dimensional Mixing In Open Channels, Il Won Seo, In Hwan Park
A Particle Dispersion Model For Analysis Of Two-Dimensional Mixing In Open Channels, Il Won Seo, In Hwan Park
International Conference on Hydroinformatics
Pollutant mixing in natural rivers is analyzed by using the two-dimensional depth-averaged advection-dispersion model (2D ADE) for rapid completion of the vertical mixing. The dispersion term in the 2D ADE follows Taylor’s assumption (Taylor, 1954; Fischer et al., 1979) which can be applied in the Taylor period. However, most open channel flow has long initial period which makes the skewed concentration distribution due to the unbalance between the shear flow advection and the vertical mixing (Chatwin, 1970). Therefore, the non-Fickian dispersion model is necessary to compensate the limitations of the 2D ADE model. In this research, the two-dimensional particle dispersion …
Separation Of Soil Evaporation And Vegetation Transpiration By Modis Data For Central And Northern China, Tingting Li, Jinhui Jeanne Huang
Separation Of Soil Evaporation And Vegetation Transpiration By Modis Data For Central And Northern China, Tingting Li, Jinhui Jeanne Huang
International Conference on Hydroinformatics
Evapotranspiration(ET) plays a crucial role in the hydrologic system. To estimate evapotranspiration quantitatively in a large scale, remote sensing data has been used in a number of models and shows its applicability in the estimation of evapotranspiration. In this paper, evapotranspiration for central and northern China was derived from MODIS data. In arid and semi-arid regions, soil evaporation can be considered as the minimum water requirement for bare area, while evapotranspiration can be considered as the minimum water demand for the area covered by vegetation. Hence the separation of soil evaporation and vegetation transpiration is valuable for efficient water resources …
Parameterization Of Turbulence Models Using 3dvar Data Assimilation, Agnieszka Indiana Olbert, Stephen Nash, Emanuele Ragnoli, Michael Hartnett
Parameterization Of Turbulence Models Using 3dvar Data Assimilation, Agnieszka Indiana Olbert, Stephen Nash, Emanuele Ragnoli, Michael Hartnett
International Conference on Hydroinformatics
In this research the 3DVAR data assimilation scheme is implemented in the numerical model DIVAST in order to optimize the performance of the numerical model by selecting an appropriate turbulence scheme and tuning its parameters. Two turbulence closure schemes: the Prandtl mixing length model and the two-equation k-ε model were incorporated into DIVAST and examined with respect to their universality of application, complexity of solutions, computational efficiency and numerical stability. A square harbour with one symmetrical entrance subject to tide-induced flows was selected to investigate the structure of turbulent flows. The experimental part of the research was conducted in a …
A Serious Gaming Approach For Serious Stakeholder Participation, Chengzi Chew, Anna Zabel, Gareth James Lloyd, Indika Gunawardana, Bertram Monninkhoff
A Serious Gaming Approach For Serious Stakeholder Participation, Chengzi Chew, Anna Zabel, Gareth James Lloyd, Indika Gunawardana, Bertram Monninkhoff
International Conference on Hydroinformatics
Serious games are a category of games which are designed for a specific purpose other than for pure entertainment. It is not a new concept but serious games using real data, coupled with real time modelling and combining model results with social and economic factors opens up a new paradigm for active stakeholder participation. DHI and UNEP-DHI Centre initiated a project called Aqua Republica where a virtual world is developed which allows participants to develop a river basin and visualise the consequences of their decisions. The aim of this project is to raise awareness of the interconnectivity of water and …
Optimal Rehabilitation Strategy In Water Distribution Systems Considering Reduction In Greenhouse Gas Emissions, Farshid Rahmani, Abdollah Ardeshir, Kourosh Behzadian, Fatemeh Jalilsani
Optimal Rehabilitation Strategy In Water Distribution Systems Considering Reduction In Greenhouse Gas Emissions, Farshid Rahmani, Abdollah Ardeshir, Kourosh Behzadian, Fatemeh Jalilsani
International Conference on Hydroinformatics
Most of water distribution systems (WDS) need rehabilitation due to aging infrastructure leading to decreasing capacity, increasing leakage and consequently low performance of the WDS. However an appropriate strategy including location and time of pipeline rehabilitation in a WDS with respect to a limited budget is the main challenge which has been addressed frequently by researchers and practitioners. On the other hand, selection of appropriate rehabilitation technique and material types is another main issue which has yet to address properly. The latter can affect the environmental impacts of a rehabilitation strategy meeting the challenges of global warming mitigation and consequent …
Pcswmm Real Time Flood Forecasting – Toronto, Canada, Mark Randall, Rob James, William James, Karen Finney, Michael Heralall
Pcswmm Real Time Flood Forecasting – Toronto, Canada, Mark Randall, Rob James, William James, Karen Finney, Michael Heralall
International Conference on Hydroinformatics
Flooding in urban areas can cause significant property damage and human injury. Recent extreme precipitation events in the Toronto area have highlighted the need for enhanced warning systems to inform decision making prior to a storm’s arrival. To improve the accuracy and lead time of flood forecasting, Computational Hydraulics International and the Toronto and Region Conservation Authority have developed a high resolution, deterministic, physically-based remote-sensing real-time flood forecasting and web-based decision support system, and applied it to the Don River and Etobicoke Creek watersheds. Using PCSWMM Real-Time, NEXRAD radar data, US EPA SWMM5, HTML5 and Google Maps the system forecasts …
Reconstruction Of Paleo-Hydrologic Data For Vulnerability Assessment Of Water Resources Systems, Saman Razavi, Amin Elshorbagy, Howard Wheater, David Sauchyn
Reconstruction Of Paleo-Hydrologic Data For Vulnerability Assessment Of Water Resources Systems, Saman Razavi, Amin Elshorbagy, Howard Wheater, David Sauchyn
International Conference on Hydroinformatics
Tree-ring chronologies are a rich source of information of past climate-driven non-stationarities in hydrologic variables. They are typically directly related to available water in respective years, thereby providing a basis for paleo-hydrology reconstruction. This study investigates the time series of tree-ring chronologies, with the objective of identifying the spatiotemporal patterns and extents of non-stationarities, which are essentially representations of past “climate changes”. This study also generates ensembles of moving-average streamflow time series for the centuries prior to the period of observational record. The major headwater tributaries of the Saskatchewan River basin (SaskRB), the main source of surface water in the …
A Harmonized Vocabulary For Water Quality, Simon J.D. Cox, Bruce A. Simons, Jonathan Yu
A Harmonized Vocabulary For Water Quality, Simon J.D. Cox, Bruce A. Simons, Jonathan Yu
International Conference on Hydroinformatics
Interoperability of water quality data depends on the use of common models, schemas and vocabularies. However, terms are usually collected during different activities and projects in isolation of one another, resulting in vocabularies that have the same scope being represented with different terms, using different formats and formalisms, and published in various access methods. Significantly, most water quality vocabularies conflate multiple concepts in a single term, e.g. quantity kind, units of measure, substance or taxon, medium and procedure. This bundles information associated with separate elements from the OGC Observations and Measurements (O&M) model into a single slot. We have developed …
Harmonization Of Vocabularies For Water Data, Simon J.D. Cox, Jonathan Yu, Bruce A. Simons
Harmonization Of Vocabularies For Water Data, Simon J.D. Cox, Jonathan Yu, Bruce A. Simons
International Conference on Hydroinformatics
Observational data encodes values of properties associated with a feature of interest, estimated by a specified procedure. For water the properties are physical parameters like level, volume, flow and pressure, and concentrations and counts of chemicals, substances and organisms. Water property vocabularies have been assembled at project, agency and jurisdictional level. Organizations such as EPA, USGS, CEH, GA and BoM maintain vocabularies for internal use, and may make them available externally as text files. BODC and MMI have harvested many water vocabularies alongside others of interest in their domain, formalized the content using SKOS, and published them through web interfaces. …
A Web-Based Hydroinformatic Platform For Water Quality Modelling And Simulation In A River Basin, Jose Pinho, Jose Vieira
A Web-Based Hydroinformatic Platform For Water Quality Modelling And Simulation In A River Basin, Jose Pinho, Jose Vieira
International Conference on Hydroinformatics
In recent years a major effort has been done to make water quality modelling tools available for water resources management at a river basin scale. The European water framework directive clear states that these tools must be used in making the diagnostic of surface water bodies water quality status and to anticipate the impact of measures to be implemented in order to achieve a good ecological status by 2015 in European waters. In order to make modelling tools usable by all the actors enrolled in water resources management process at river basins, these tools must be simple, user-friendly and robust. …
Web-Based Engine For Discovery Of Observations Using Landscape Units, Haowen Xu, Abbas Ali Amir, Marian Muste
Web-Based Engine For Discovery Of Observations Using Landscape Units, Haowen Xu, Abbas Ali Amir, Marian Muste
International Conference on Hydroinformatics
Investigations of natural resources processes realted to the water cycle are best studied using a commensurate landscape unit for the spatial extent of the process. Consequently, the capability to efficiently delineate the watershed extent along with the main hydrological characteristics and behavior of the river network and its drainage area is essential. The watershed search engine discussed in the present paper is designed to identify various observations acquired in the upstream drainage area of the watershed from a point specified by the user. The point can be selected on or outside the stream network using a web mapping interface. The …
River Water Quality Modelling In Developing A Catchment Water Safety Plan, Jose Vieira, Jose Pinho
River Water Quality Modelling In Developing A Catchment Water Safety Plan, Jose Vieira, Jose Pinho
International Conference on Hydroinformatics
The primary aim of a catchment water safety plan is to reduce risks within the catchment to protect the quality of drinking water sources at the point of abstraction. Even where effective arrangements for catchment management and control have been implemented, unexpected deterioration in raw water quality can pose a risk to treated drinking water quality. Thus potential sources of pollution impacting the abstraction point should be identified and monitored. An important part of any catchment management strategy includes implementation of raw water monitoring programmes, targeted at the most likely microbiological challenges to water treatment. When combined with good monitoring …