Adaptive, Decentralized, And Real-Time Sampling Strategies For Resource Constrained Hydraulic And Hydrologic Sensor Networks,
2014
City University of New York (CUNY)
Adaptive, Decentralized, And Real-Time Sampling Strategies For Resource Constrained Hydraulic And Hydrologic Sensor Networks, Brandon Preclaro Wong, Branko Kerkez
International Conference on Hydroinformatics
We discuss the development and performance of a low-power sensor node (hardware, software and algorithms) that autonomously controls the sampling interval of a suite of sensors based on local state estimates and future predictions of water flow. The problem is motivated by the need to accurately reconstruct abrupt state changes in urban watersheds and stormwater systems. Presently, the detection of these events is limited by the temporal resolution of sensor data. It is often infeasible, however, to increase measurement frequency due to energy and sampling constraints. This is particularly true for real-time water quality measurements, where sampling frequency is limited …
Flood Resilience Assessment In Urban Drainage Systems Through Multi-Objective Optimisation,
2014
City University of New York (CUNY)
Flood Resilience Assessment In Urban Drainage Systems Through Multi-Objective Optimisation, Carlos Martínez-Cano, Beheshtah Toloh, Arlex Sanchez-Torres, Zoran Vojinović, Damir Brdjanovic
International Conference on Hydroinformatics
In future years, economic development, urbanisation and heavy rainfall events are expected to increase in urban areas, in particular in developing countries. It is well known that urban development has a strong impact on the water cycle such as increase of flood peaks and volume, decrease of base flow, hydraulic stress and water pollution. Resilience measures are still needed to improve urban flood risk, the possibilities to provide indicators that could be used to characterize urban resilience related to flooding is outmost importance. The work described here presents an optimisation framework for urban drainage rehabilitation that incorporates in the decision …
An Open Visualization Tool (Openvt) For Mesh Based Water Models,
2014
City University of New York (CUNY)
An Open Visualization Tool (Openvt) For Mesh Based Water Models, Quan Pan, Mario E. Castro Gama, Ioana Popescu
International Conference on Hydroinformatics
Worldwide there has been a lot of developments of numerical models for water related problems, using mesh based approaches. The models are usually released with their own data formats and visualization tools. Computer power has developed greatly in the last 10-15 years resulting in capabilities of better representing physical processes, hence the size of output results becomes larger and larger. Taking this into account present paper presents the development of an open visualization tool (openVT) for mesh based water models, which has functions for loading and visualizing results from a suite of modeling systems, regardless of their data structures. The …
Prediction And Dissemination Of Bathing Water Quality In England And Wales – A Pilot Study,
2014
City University of New York (CUNY)
Prediction And Dissemination Of Bathing Water Quality In England And Wales – A Pilot Study, Juzer F. Dhondia, Deborah Tyrrell, Daniel Twigt, Ian Dunhill
International Conference on Hydroinformatics
Water quality at some bathing waters can be adversely affected by heavy rainfall resulting in water running off the land, picking up faecal contaminants from the catchment and discharging this to bathing waters. The Environment Agency of England and Wales analyzed the relationship between water quality and rainfall at each bathing site. This relationship between rainfall and water quality depends on the intensity and duration of the rainfall and considering each bathing sites individual characteristics such as tidal flows, wind, run-off from surrounding catchment. This paper describes a Pilot study for setting up an operational bathing water quality prediction system …
Hydroterre Strahler Network Service For Any Level 12 Huc Catchment In The Usa.,
2014
City University of New York (CUNY)
Hydroterre Strahler Network Service For Any Level 12 Huc Catchment In The Usa., Lorne Leonard, Chris Duffy
International Conference on Hydroinformatics
My talk will discuss two related topics to HydroTerre (http://www.hydroterre.psu.edu), a prototype infrastructure that provides researchers, educators, and resource managers with seamless access to geospatial/geotemporal data for supporting physics-based numerical models. The first topic describes the prototype, defining the supporting Essential Terrestrial Variables (ETV’s) and the infrastructure to support models and data anywhere in the continental USA (CONUS). I will address how we are overcoming important problems of accessibility to high-resolution geospatial data sets from multiple sources, scalability of geospatial data in support of distributed models and data-intensive computation for multi-scale, multi-state simulations. The second topic will describe a derived …
Integration Of Trmm Rainfall In Numerical Model For Pesticide Prediction In Subtropical Climate,
2014
City University of New York (CUNY)
Integration Of Trmm Rainfall In Numerical Model For Pesticide Prediction In Subtropical Climate, Manika Gupta, N.K. Garg, Prashant K. Srivastava, Tanvir Islam
International Conference on Hydroinformatics
Rain gauge data in developing countries are usually very limited, which constrains most of the hydrological modelling applications. The satellite based rainfall estimates could be a promising choice and hence can be used as a surrogate to ground-based rainfall. However, the usefulness of these products needs to be evaluated for hydrological application such as for pesticide predictions. The present study compares the contaminant transport simulation with the utilization of Tropical Rainfall Measuring Mission (TRMM) rainfall compared with rain gauge data from the field site. Through this study, transport trends of the pesticide, Thiram, a dithiocarbamate, at different time and depth …
Using Multi-Scale Uncertainty Information And Specific Forecast Skill To Improve Reservoir Operations,
2014
City University of New York (CUNY)
Using Multi-Scale Uncertainty Information And Specific Forecast Skill To Improve Reservoir Operations, Thomas S. Lowry, Nathalie Voisin, Mark S. Wigmosta
International Conference on Hydroinformatics
Optimization of reservoir operations to time series of forecasted inflows are constrained by a set of multiple objectives that span many time scales, however the temporally evolving skill of the forecasts are usually not considered in the objective functions. For example, a flow forecast time series extending from 1 day to 6 months consists of a medium range flow forecast that draws its skill from initial conditions and weather forecasts and a seasonal flow forecast that relies on the initial conditions only. The skill of the medium range flow forecast is the daily and aggregated values with a range of …
Study On Water Age In An Estuary Using Three-Dimensional Models,
2014
City University of New York (CUNY)
Study On Water Age In An Estuary Using Three-Dimensional Models, Yuheng Ren, Binliang Lin, Jian Sun
International Conference on Hydroinformatics
The age of water (AW) concept is applied in the Pearl River Estuary to investigate the water exchange process in three-dimensional space and its seasonal variation. A three-dimensional AW model is built based on the advanced hydrodynamic model MIKE3, and the model has been verified against a field survey dataset in the Pearl River Estuary. Using this model, the spatio-temporal distributions of water age are numerically determined in response to hydrodynamic factors. The predictions indicate that the mean AW values inside the Pearl River Estuary during the wet season and the dry season are approximately 10 days and 25 days, …
Decision Making System For Water Production And Treatment Process As Well As Blending Of Multiple Water Sources Gat Micro Grid,
2014
City University of New York (CUNY)
Decision Making System For Water Production And Treatment Process As Well As Blending Of Multiple Water Sources Gat Micro Grid, Dal-Sik Woo, Sung-Hoon Shin, Haksoo Lee, Seounghyun Kim
International Conference on Hydroinformatics
Usage of water is on rise worldwide as a result of population growth and urbanization. Accordingly, conflicts are created to secure the water source among nations. Water production and treatment expense also incurred too much. To solve this problem, decision making system for blending of multiple water source, water production and treatment process are needed in order to provide secured water resources, customized water quantity and quality. Multiple water sources are classified into surface water, underground water, treated waste water, rain water, seawater and Brackish Water. Each of them can be treated to meet demand of customized water quantity and …
A Dss For Reservoirs Operation Based On The Execution Of Formal Models,
2014
City University of New York (CUNY)
A Dss For Reservoirs Operation Based On The Execution Of Formal Models, Antonio Linares, Jesus Regodon, Laura Panizo, Maria Del Mar Gallardo, Pedro Merino
International Conference on Hydroinformatics
Controlling the evolution of a reservoir in a flood episode can be critical, especially in Mediterranean basins where the concentration time is very short. In this situation, an automatic software tool can help the reservoir manager to make a quick decision. In this paper we present a DSS based on the execution of formal models by means of model checking. This technique exhaustively explores the different execution branches of a model of the system. The DSS addresses two flood control tasks. First, the DSS simulates the evolution of the reservoir (the water stored and released) when applying a predefined flood …
Comparison Of Statistical Failure Models To Support Sewer System Operation,
2014
City University of New York (CUNY)
Comparison Of Statistical Failure Models To Support Sewer System Operation, Maria Torres, Juan Pablo Rodriguez, Joao P. Leitao
International Conference on Hydroinformatics
Currently, achieving appropriate operative performance of water infrastructure has become a high priority in urbanized areas. Particularly, providing reliable sewerage service is central for human well-being and its development (Kleidorfer, et al. 2013). Having that wastewater system management is an increasingly complex task due to a number of hardly predictable factors (e.g. deterioration of system components and climate variability), recent research efforts have been focusing on developing methods to identify optimum proactive rehabilitation and maintenance strategies, some of which are based on the identification of the sewerage structures in most need of attention. To meet such a goal, different forecast …
An Analysis Of Discharge And Water Level Changes Due To Weir (In The Case Of The Waegwan And Nakdong Station In South Korea),
2014
City University of New York (CUNY)
An Analysis Of Discharge And Water Level Changes Due To Weir (In The Case Of The Waegwan And Nakdong Station In South Korea), Yonghyeon Gwon, Dongseop Lee, Dohyun Kim, Sungeun Jung, Seungkwon Jung, Hosun Lee
International Conference on Hydroinformatics
ABSTRACT Our country, Korea, lacks the per capita water endowment because of the high population density and geographical characteristics. Therefore, The 4 Rivers Project has been promoted since 2009. In order to control effectively drought or floods caused by abnormal climate and strong rainfall in summer, it was done and completed in 2013. The Nakdong River is the longest in the 4 Rivers Project, which it was conducted among the country's major rivers, and a lot of hydraulic structures were installed. we selected Nakdong and Weagwan stations which are located in the Nakdong River. Because the change was smaller there …
Assessing Rehabilitation Strategies Of Urban Drainage Systems Based On Future Scenarios Of Urbanization,
2014
City University of New York (CUNY)
Assessing Rehabilitation Strategies Of Urban Drainage Systems Based On Future Scenarios Of Urbanization, Arlex Sanchez-Torres, Zoran Vojinović, Roland K. Price
International Conference on Hydroinformatics
Population growth and urbanisation are creating a big need to improve the planning processes and management of urban infrastructures. Urban drainage networks are one of the vital services needed for any urban area, modelling its growth and expansion is a challenge because of the dynamics of the system. This work describes the integration of a cellular automata model, to simulate urban land use changes, with algorithms to deduct the future layout of the drainage network and with SWMM 5.0 as the hydraulic engine to assess the performance of the drainage systems in the current condition and in the future. The …
Urban Water Demand Characterization And Short-Term Forecasting – The Icewater Project Approach,
2014
City University of New York (CUNY)
Urban Water Demand Characterization And Short-Term Forecasting – The Icewater Project Approach, Antonio Candelieri, Dante Conti, Davide Cappellini, Francesco Archetti
International Conference on Hydroinformatics
An approach based on time series clustering and Support Vector Regression (SVR) is proposed to characterize typical daily urban water demand patterns and use them to perform short term forecasts. Time series clustering is aimed at retrieving the hourly quantity of water supplied during each day within a specific time window (e.g. last one or two years). A suitable distance measure has been considered to capture differences in shape and volume between time series. The final goal is to group similar daily water demand curves and then summarize them in correspondent “prototypal” patterns. A post processing step is then performed …
Spectral Clustering And Support Vector Classification For Localizing Leakages In Water Distribution Networks – The Icewater Project Approach,
2014
City University of New York (CUNY)
Spectral Clustering And Support Vector Classification For Localizing Leakages In Water Distribution Networks – The Icewater Project Approach, Antonio Candelieri, Dante Conti, Davide Soldi, Francesco Archetti
International Conference on Hydroinformatics
This paper presents a framework based on hydraulic simulation and machine learning for supporting Water Distribution Network (WDN) managers in localizing leakages, while reducing time and costs for investigation, intervention and rehabilitation. As a first step, hydraulic simulation is used to run different leakage scenarios by introducing a leak on each pipe, in turn, and varying its severity. As output of each scenario run, pressure and flow variations in correspondence of the actual monitoring points into the WDN, and with respect to the faultless model, are stored. Scenarios clustering is aimed at grouping together leaks generating similar effects, in terms …
Economical And Systematical Evaluation On Rainfall Harvesting System (Case Study : Rainfall Harvesting System Designed In Taebaek City, Republic Of Korea),
2014
City University of New York (CUNY)
Economical And Systematical Evaluation On Rainfall Harvesting System (Case Study : Rainfall Harvesting System Designed In Taebaek City, Republic Of Korea), Seungkwon Jung, Changdeok Jang, Jiwon Jung, Hosun Lee, Yonghyeon Gwon
International Conference on Hydroinformatics
Recently, climate change has caused drought to become more frequent and is becoming one of the serious natural disasters, resulting damages in infrastructure facilities, economy and private property losses etc. Taebaek city of Gangwon-do lies in the northeast Korean Peninsula along the steep mountain slopes, all the way to the sea. Thu, this city exhibit the Marine Climatic Characteristics. During the past 10 years, the average rainfall of Taebaek city is 849.9mm/year, which is less than the average rainfall for the whole country (1,274mm/year). This research is still ongoing. The next assessment will be on the construction cost of rainfall …
Mtn Mobile Money Technology As A Convinient Option For Water Utility Bills In Uganda,
2014
City University of New York (CUNY)
Mtn Mobile Money Technology As A Convinient Option For Water Utility Bills In Uganda, Agnes Namuli
International Conference on Hydroinformatics
In the past, the public struggled to stand long hours and travelling long distances to pay watebills in Uganda urban centres. This made people become reluctant to pay for water bills leading to continious water cut offs and loosing trust in the National Water and Sewerage Cooperation in Uganda. The use of mobile money technology has changed and made access to water in the urban centres more effective and efficiency. The convenience of MTN Mobile money to the public came as a real time solution and has eliminated delays in updating customer accounts as well as reduce on the physical …
Computational Efficient Small Signal Model For Fast Hydraulic Simulations,
2014
City University of New York (CUNY)
Computational Efficient Small Signal Model For Fast Hydraulic Simulations, Markus Neumayer, David Steffelbauer, Markus Günther, Daniela Fuchs-Hanusch
International Conference on Hydroinformatics
To increase the performance, quality and reliability of water distribution systems, implementing efficient computational and algorithmic techniques, has become a major tasks in hydraulic modelling. Examples can be found in online condition monitoring, real time control applications, or model based leakage detection and location approaches, etc. All these techniques require extensive hydraulic simulations. Well known and trusted hydraulic simulation tools like EPANET, etc. are deployed within the individual task specific code using provided interface routines. The flow dependent friction models of hydraulic systems require an iterative solution strategy to solve the problem. Although this is done efficiently using Newton-Raphson methods, …
A Study On The Water Quality Improvement Of The Songdo Waterfront's Canal System,
2014
City University of New York (CUNY)
A Study On The Water Quality Improvement Of The Songdo Waterfront's Canal System, Dongwoo Jang, Gyewoon Choi, Sangjin Ahn
International Conference on Hydroinformatics
This study aims to investigate the flow conditions in the proposed canal system to be located in Songdo District, Incheon. Incheon Free Economic Zone (IFEZ) is concerned about the potential issues like water quality and algal problems, which will greatly affect the success of the Songdo waterfront development.Thus there is a need to ensure that natural stream flow and good water quality will maintain. In order to do this, a 3D numerical model, MIKE 3 FM was setup and used to investigate the water circulation system with respect to the operation of the four water gates present at the ends …
Assimilation Of Heterogeneous Uncertain Data, Having Different Observational Errors, In Hydrological Models,
2014
City University of New York (CUNY)
Assimilation Of Heterogeneous Uncertain Data, Having Different Observational Errors, In Hydrological Models, Maurizio Mazzoleni, Leonardo Alfonso, Dimitri P. Solomatine
International Conference on Hydroinformatics
Accurate real-time forecasting of river water level is an important issue that has to be addressed in order to prevent and mitigate water-related risk. To this end, data assimilation methods have been used to improve the forecasts ability of water model merging observations coming from stations and model simulations. As a consequence of the increasing availability of dynamic and cheap sensors, having variable life-span, space and temporal coverage, the citizens are becoming an active part in information capturing, evaluation and communication. On the other hand, it is difficult to assess the uncertain related to the observation coming from such sensors. …
