Deterministic Hydrological Model For Flood Risk Assessment Of Mexico City,
2014
City University of New York (CUNY)
Deterministic Hydrological Model For Flood Risk Assessment Of Mexico City, Vargas Bringas Rafael, Gourbesville Philippe
International Conference on Hydroinformatics
Mexico City is facing problems of flooding in some areas at certain times of the year, causing important losses and damages on properties and residents including some casualties. Therefore, it is important to carry out a flood risk assessment in the catchment of Mexico City and estimate damages of probable flood events. However, limited data of observed discharges and water depths in the main rivers of the city are available, and this represents an obstacle for the understanding of flooding in Mexico City. The objective of the developed tool is to provide an efficient support to management of the flood …
Calibration Strategies Designed For Long Term Sediment Transport Modelling,
2014
City University of New York (CUNY)
Calibration Strategies Designed For Long Term Sediment Transport Modelling, Robert Klar, Stefan Achleitner, Stefan Jocham, Markus Aufleger
International Conference on Hydroinformatics
The presented work deals with the calibration of a 2D numerical model for the simulation of long term bed load transport. A settled basin along an alpine stream was used as a case study. The focus is to parameterise the used multi fractional transport model such that a dynamically balanced behavior regarding erosion and deposition is reached. The used 2D hydrodynamic model utilizes a multi-fraction multi-layer approach to simulate morphological changes and bed load transport. The mass balancing is performed between three layers: a top mixing layer, an intermediate subsurface layer and a bottom layer. Using this approach bears computational …
A Model To Structure Scientific Information For Decision Makers,
2014
City University of New York (CUNY)
A Model To Structure Scientific Information For Decision Makers, Rebecca Kristine Schmidt, Damian Barrett, Simon Gallant
International Conference on Hydroinformatics
Scientific information for decision makers needs to be discoverable and transparent so that decisions are more easily based on scientific evidence. One way to achieve these goals is to specify a robust model that structures this scientific information. This paper presents a model that governs the scientific activities, inputs and products for bioregional assessments (BAs), which provide information on the ecology, hydrology, geology and hydrogeology of a bioregion with explicit assessment of the potential direct, indirect and cumulative impacts of coal seam gas and coal mining development on water resources. This scientific information will be available for all interested parties …
Extending The Finnish Flood Information System To Include Flood Risk Mapping,
2014
City University of New York (CUNY)
Extending The Finnish Flood Information System To Include Flood Risk Mapping, Mikko Sane, Atte Virtanen, Riikka Repo
International Conference on Hydroinformatics
The sound flood risk management needs more and more effective information systems. In addition to flood risk management planning, the past floods in Finland have proved that up-to-date risk information is essential in emergencies. Therefore in addition to the water system forecasts and flood warnings, the information on potential exposed elements and flood damages are playing a significant role in maintaining an overview of the national flood situation. The national flood information system of Finland, established in 2006 and extended since 2010, brings together the essential information on floods under a single user interface. At the Finnish Environment Institute SYKE, …
River Flows Prediction By Ensemble Model,
2014
City University of New York (CUNY)
River Flows Prediction By Ensemble Model, Milan Cisty, Celar Lubomir
International Conference on Hydroinformatics
This review paper will deal with the possibilities of applying the R programming language in water resources and hydrologic applications in education and research. The objective of this paper is to present some features and packages that make R a powerful environment for analyzing data from the hydrology and water resources management fields, hydrological modelling, the post-processing of the results of such modelling, and other tasks.
The Benthic Geoecology Model Within The Modular System For Shelves And Coasts (Mossco),
2014
City University of New York (CUNY)
The Benthic Geoecology Model Within The Modular System For Shelves And Coasts (Mossco), Mohammad Hassan Nasermoaddeli, Carsten Lemmen, Richard Hofmeister, Frank Koesters, Knut Klingbeil
International Conference on Hydroinformatics
The Modular System for Shelves and Coasts (MOSSCO) integrates physical, biological, chemical and geological models of shelves and coasts for the North Sea and Baltic Sea in an exchangeable way. The MOSSCO software forms a coupling framework for exchanging data and models, which distinguishes between physical domains (Earth System compartments such as the benthic and pelagic zone) and processes (such as benthic geochemistry, physical erosion and biological stabilization). Information exchange across physical domains with different grids and time steps are managed using the ESMF (Earth System Modelling Framework), whereas coupling of processes within individual modules is achieved using FABM (Framework …
Numerical Modeling Of Otec Thermal Discharges In Coastal Waters,
2014
City University of New York (CUNY)
Numerical Modeling Of Otec Thermal Discharges In Coastal Waters, Jongkyu Kim, Hyeon-Ju Kim
International Conference on Hydroinformatics
Thermal discharge from industrial outfalls is categorized into two major classes based on their density. First class is the effluent that has a higher density than that of the ambient water body. The second class is the effluent that has a lower density than that of the ambient water body. Due to the effect of several factors such as tides, waves, winds, river discharges, thermal effluents etc., the mixing characteristics of OTEC (Ocean Thermal Energy Conversion) thermal plume is much complicated. In this study we try to identify the mixing and dispersion characteristics of coastal waters to consider their physical …
Meteomap: Generation Of Meteorological Variables For Distributed Physically-Based Hydrological Modeling,
2014
City University of New York (CUNY)
Meteomap: Generation Of Meteorological Variables For Distributed Physically-Based Hydrological Modeling, Cristina Aguilar, Javier Herrero, Agustín Millares, Miguel A. Losada, María José Polo
International Conference on Hydroinformatics
Distributed energy and water balance models require time-series surfaces of the meteorological variables involved in hydrological processes. Most of the hydrological GIS-based models apply simple interpolation techniques to extrapolate the point scale values registered at weather stations at a watershed scale. In mountainous areas, where the monitoring network ineffectively covers the complex terrain heterogeneity, simple geostatistical methods for spatial interpolation are not always representative enough, and algorithms that explicitly or implicitly account for the features creating strong local gradients in the meteorological variables must be applied. Originally developed as a meteorological pre-processing tool for a complete hydrological model (WiMMed), MeteoMap …
Hydraulic Modelling And Calibration Of The Upper Silesian Waterworks In Poland,
2014
City University of New York (CUNY)
Hydraulic Modelling And Calibration Of The Upper Silesian Waterworks In Poland, Patryk Wójtowicz, Andrzej Pawlak, Jan Studziński
International Conference on Hydroinformatics
Our paper presents the preliminary results of hydraulic modelling and calibration of a complex water transfer and distribution system of Upper Silesian Waterworks PLC (USW). A new approach to quasi real-time model calibration and validation in connection with an integrated ICT system will be presented. The USW is the biggest water company in Poland and one of the biggest in Europe delivering water to over 3 million customers in Silesian Metropolis, on the area covering about 4.3 thousand square kilometres, with the main water network which is over 880 km long. This water distribution system incorporates central and western sub-regions …
Hydrological Impacts Of Climate Change – Challenges, Uncertainty And Limitations,
2014
City University of New York (CUNY)
Hydrological Impacts Of Climate Change – Challenges, Uncertainty And Limitations, Shreedhar Maskey, Yurong Hu, Anshul Agarwal, Dinesh Bhatt
International Conference on Hydroinformatics
How climate change impacts water resources in the future is an important question that all hydrologists want to have an answer. Climate prediction scenarios are available from many Global Circulation Models for the 21st century. These prediction datasets are typically used as input to a hydrological model for simulating impacts on hydrology, particularly river runoff, evaporation, and storage changes. Because hydrological models are usually run on a much smaller resolutions than climate models, the climate prediction datasets are usually downscaled to represent local climate for using in a hydrological model. The uncertainty in the GCMs, downscaling and hydrological models makes …
Stochastic Assessment Of Environmental Flows In Semiarid Environments,
2014
City University of New York (CUNY)
Stochastic Assessment Of Environmental Flows In Semiarid Environments, Cristina Aguilar, Marta Egüen, Jose María Perales, Miguel A. Losada, María José Polo
International Conference on Hydroinformatics
The regimen of environmental flows (EF) must be included as terms of environmental demand in the management of water resources. Even though there are numerous methods for the computation of EF, the criteria applied at different steps in the calculation process are quite subjective whereas the results are fixed values that must be meet by water planners. This study presents a friendly-user tool for the assessment of the probability of compliance of a certain EF scenario with the natural regimen in a semiarid area in southern Spain. 250 replications of a 25-yr period of different hydrological variables (rainfall, minimum and …
Hydrological Ensemble Forecasting And Data Assimilation With An Integrated Hydrological Modelling System,
2014
City University of New York (CUNY)
Hydrological Ensemble Forecasting And Data Assimilation With An Integrated Hydrological Modelling System, Henrik Madsen, Diana Lucatero, Marc Ridler, Donghua Zhang, Jens Christian Refsgaard, Karsten Høgh Jensen
International Conference on Hydroinformatics
Hydrological forecasting is an important instrument for more effective water management, such as warning and protection against water-related hazards, real-time operation of water infrastructure, improved water allocation, and environmental monitoring. Recent advances within radar rainfall estimation and nowcasting, ensemble-based numerical weather prediction (NWP), in-situ and satellite monitoring, and hydrological data assimilation are opening up new opportunities in real-time hydrological forecasting. NWP ensemble products can be used as input to hydrological forecast models to produce probabilistic forecasts and estimation of forecast uncertainty of the hydrological variables of interest. In this regard, key scientific challenges are understanding, quantification, and propagation of the …
Floodalert: A Simplified Radar-Based Ews For Urban Flood Warning,
2014
City University of New York (CUNY)
Floodalert: A Simplified Radar-Based Ews For Urban Flood Warning, Xavier Llort, Rafael Sánchez-Diezma, Alvaro Rodríguez, David Sancho, Marc Berenguer, Daniel Sempere-Torres
International Conference on Hydroinformatics
Urban floods can be caused by intense rainfall accumulations in short time periods that eventually exceed the capacity of the sewer networks. Despite the efforts made in the last years in all cities to increase the sewer’s capacity many cities are still exposed to these heavy rainfall events. In this work, we present a simplified flood Early Warning System, called FloodAlert, based on the use of radar observations to issue local flood warnings. Although precipitation accumulation estimates based on radar observations may suffer from different sources of error, they may also be the quickest way to obtain a reliable estimate …
Wibasin: Basin Management Through An Integrated Platform,
2014
City University of New York (CUNY)
Wibasin: Basin Management Through An Integrated Platform, Xavier Llort, Rafael Sánchez-Diezma, David Sancho, Alvaro Rodríguez, Marc Berenguer, Daniel Sempere-Torres
International Conference on Hydroinformatics
A key issue in basin and dam management is the correct estimation of accumulated rainfall (observed as well as forecasted) over the catchment (over the characteristic concentration time for critical short-term management, and over longer time periods to anticipate rainfall situations). In this work we present a platform for basin and dam management, called WiBasin, which integrates different sources of precipitation (both observed and forecasted) in a continuous time series of hourly rainfall accumulation fields, having the best precipitation estimation available at each time step. Optimal rainfall estimates used for the past time steps are based on a geostatistical approach …
International Standardization Of Water Information Exchange: Activities Of The Wmo/Ogc Hydrology Domain Working Group,
2014
City University of New York (CUNY)
International Standardization Of Water Information Exchange: Activities Of The Wmo/Ogc Hydrology Domain Working Group, Ulrich Looser, Ilya Zaslavsky, Tony Boston, David Lemon, Lance Mckee, Irina Dornblut
International Conference on Hydroinformatics
Hydrologic information is generated and published by many government, research, commercial and citizen groups around the world. The formats and protocols used to share the data are heterogeneous, with little agreement about semantics of hydrologic measurements, description of hydrologic features, or metadata content. A broad consensus on hydrologic data sharing formats is needed to ensure that the information can be reliably discovered, interpreted, accessed and integrated. This has been the focus of the Hydrology Domain Working Group (Hydro DWG), established in 2009 as a joint working group of the World Meteorological Organisation (WMO) and the Open Geospatial Consortium (OGC). It …
Hidromet: A Cloud-Based Ews Platform For Real Time Urban Flood Warning,
2014
City University of New York (CUNY)
Hidromet: A Cloud-Based Ews Platform For Real Time Urban Flood Warning, Alvaro Rodríguez, Xavier Llort, David Sancho, Rafael Sánchez-Diezma, Ramon Bella, Vicente Gomez
International Conference on Hydroinformatics
Urban real time flood’s Early Warning Systems have been traditionally based on the use of punctual precipitation observations (raingauges) to model the sewer network’s behaviour by means of hydraulic models. Since a key issue in the EWS is the leadtime in detecting potential risks, Hidromet takes advantage of radar nowcasting techniques to feed a hydraulic model, not only with observed precipitation by raingauges, but also with forecasted precipitation for the following few hours. Radar nowcasting techniques allow forecasting the precipitation with a high degree of accuracy. This fact, together with the rapid update of the forecasts (typically around 10 minutes), …
On The Structure Of The Objective Function For A Pressure Sensor Placement Optimizing Methodology Based On Genetic Algorithms Applied To Model-Based Leakage Localization In Distribution Water Networks,
2014
City University of New York (CUNY)
On The Structure Of The Objective Function For A Pressure Sensor Placement Optimizing Methodology Based On Genetic Algorithms Applied To Model-Based Leakage Localization In Distribution Water Networks, Eduard Bonada, Jordi Meseguer, Josep M. Mirats-Tur
International Conference on Hydroinformatics
Real-time monitoring of distribution water networks relies on the deployment of sensors and the availability of their measurements in order to predict the system state and assess its performance. A meaningful application of this methodology is the detection and localization of leaks using model-based approaches. Since the number of sensors is limited because of budget constraints, it is important to place these devices in locations where the effectiveness of the leakage diagnosis is maximized. Finding the best sensor distribution is a global optimization problem defined by an objective function that might depend on different factors. Therefore, deriving the correct structure …
Bayesian Parameter Estimation Of Modified Bartlett-Lewis Rectangular Pulse (Mblrp) Poisson Cluster Model,
2014
City University of New York (CUNY)
Bayesian Parameter Estimation Of Modified Bartlett-Lewis Rectangular Pulse (Mblrp) Poisson Cluster Model, Hyun-Han Kwon, Jang-Kyung Kim
International Conference on Hydroinformatics
Stochastic rainfall generators or stochastic simulation have been widely employed to generate synthetic rainfall sequences which can be used in hydrologic models as inputs. The calibration of Poisson cluster stochastic rainfall generator (e.g. Modified Bartlett-Lewis Rectangular Pulse, MBLRP) is seriously affected by local minima that is usually estimated from the local optimization algorithm. In this regard, global optimization techniques such as particle swarm optimization and shuffled complex evolution algorithm have been proposed to better estimate the parameters. Although the global search algorithm is designed to avoid the local minima, reliable parameter estimation of MBLRP model is not always feasible especially …
Data-Driven Surrogate Models For Flood Defence Failure Estimation : “Jarillon” Of Cali, Colombia Case Study,
2014
City University of New York (CUNY)
Data-Driven Surrogate Models For Flood Defence Failure Estimation : “Jarillon” Of Cali, Colombia Case Study, Juan Aguilar, Jord Warmink, Ralph Schielen, Suzanne Hulscher
International Conference on Hydroinformatics
The city of Cali is the main urban center of the south-western part of Colombia. It is located along the Cauca river, the second largest in the country. At the moment, the embankment located along the left margin that protects the city is designed for a return period of 100 years. In this study is intended to make a probabilistic analysis for dike failure for the present state of this flood defence. The water levels inside the main stream are highly sensitive to the peak discharge of upstream near tributaries which must be included in the analysis. An existent hydrodynamic …
A Stochastic Dynamic Programming Approach To Balancing Wind Intermittency With Hydropower,
2014
City University of New York (CUNY)
A Stochastic Dynamic Programming Approach To Balancing Wind Intermittency With Hydropower, Sue Nee Tan, Christine A. Shoemaker
International Conference on Hydroinformatics
Hydropower is a rapid response energy source and thus a perfect complement to the intermittency of wind power. However, the effect wind energy has on conventional hydropower systems can be felt, especially if the system is subject to several other environmental and non-power use constraints. The goal of this paper is to develop a general method for optimizing short-term hydropower operations of a realistic multireservoir hydropower system in a deregulated market setting when there is a stochastic wind input. The approach used is a modification of stochastic dynamic programming (SDP). The methodology is applied to a representation of multiple projects …
