runoff discharge Articles
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Conjunction of SOM-based feature extraction method and hybrid wavelet-ANN approach for rainfall–runoff modeling
In rainfall–runoff modeling, the wavelet-ANN model, which includes a wavelet transform to capture multi-scale features of the process, as well as an artificial neural network (ANN) to predict the runoff discharge, is a beneficial approach. One of the essential steps in any ANN-based development process is determination of dominant input variables. This paper presents a two-stage ...
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Hybrid wavelet-support vector machine approach for modelling rainfall–runoff process
Because of the importance of water resources management, the need for accurate modeling of the rainfall–runoff process has rapidly grown in the past decades. Recently, the support vector machine (SVM) approach has been used by hydrologists for rainfall–runoff modeling and the other fields of hydrology. Similar to the other artificial intelligence models, such as artificial neural network ...
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A new hybrid algorithm for rainfall–runoff process modeling based on the wavelet transform and genetic fuzzy system
In this paper, two hybrid artificial intelligence (AI) based models were introduced for rainfall–runoff modeling. In the first model, a genetic fuzzy system (GFS) was developed and evolved for the prediction of watersheds' runoff one time step ahead. In the second model, the wavelet-GFS (WGFS) model, wavelet transform was also used as a data pre-processing method prior to GFS ...
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A water balance approach for assessing the potential source of water in Dohuk Dam for agricultural, domestic and tourism purposes
Water balance approaches have been widely used to stimulate and forecast the average runoff and river discharge in small- and medium-sized basins. The analysis of water balance for Feesh Khabour River and Dohuk Dam catchment areas needs to be verified. This study used 24 alternative scenarios for assessing the robustness of adaptation decisions to water management practices. The discharge of ...
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A modeling study of the influences of Yangtze River and local catchment on the development of floods in Poyang Lake, China
Poyang Lake, one of the most frequently flooded regions in China, connects with the Yangtze River and the five sub-tributaries in the local catchment. The lake's hydrological regime is complicated by a complex hydraulic connection and strong river–lake interaction, especially for the extreme hydrological regime. This study analyzes the relationships between the lake level changes and the flow ...
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Parameter calibration and uncertainty estimation of a simple rainfall-runoff model in two case studies
The simple rainfall-runoff conceptual KIDS (Kielstau Discharge Simulation) model using PCRaster is applied to simulate continuously daily discharge of the Kielstau and XitaoXi basins. This work focuses on parameter calibration procedure and, in particular, assessment of model prediction uncertainty. We employ a simplistic analysis routine SUFI-2, coupled with the implementation of a Monte Carlo ...
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Agricultural runoff contaminant discharge in Dianchi Valley agricultural district, China
release of pollutants in Agricultural Runoff (AR) from a plastic canopy (PC) region in eastern Dianchi Catchment of China was investigated. The daily variation coefficients of water quantity in 2002 and 2003 were 15.9 and 7.6 respectively. From May 2002 to September 2003, local farmland had discharge of 2.9?3.2 l m2 d1. Pollutant loads from research area to Dianchi Lake from October to April were ...
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Improving drowned drainage outlets with submerged orifices
Drowned outlets are common in riverine areas and sometimes unavoidable. Due to site restrictions, drainage discharge outlets are often submerged as the water level fluctuates during high tides or during the monsoon. As the runoff cannot be discharged through the outlet the drainage system fills up faster, leading to flash floods caused by overspill from the drains. This study is focused on ...
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Estimating the impacts and uncertainty of changing spatial input data resolutions on streamflow simulations in two basins
The impact of different grid resolutions of spatial input data on modelled river runoff are investigated using the simple rainfall-runoff model KIDS (Kielstau Discharge Simulations) in PCRaster modelling language for two watersheds – Kielstau and XitaoXi. In this study, the grid-based spatial data are aggregated to coarser resolutions to support the multi-resolution, multi-calibration ...
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Cost effectiveness of centralised and decentralised storm water treatment
As part of a research & development project commissioned by the Land of North Rhine-Westphalia's Ministry for the Environment and Nature Conservation, Agriculture and Consumer Protection (MUNLV) an examination is being carried out of the general possibilities for centralised and decentralised treatment storm water runoff to be discharged into (canalised) receiving waters and the costs ensuing ...
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What is stormwater?
Stormwater runoff, water that isn’t absorbed into the ground after a weather event, is a potential water source that cities across the world have struggled with for decades. Why is coping with it such a challenge? Whether the precipitation is water or ice, its addition to the environment can be a problem, especially when a lot of it falls in a short amount of time. When this occurs in ...
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Going Green in D.C. Case Study
Green infrastructure practices serve as decentralized alternatives to traditional wet weather controls in urban areas where land is limited and sewer infrastructure is often stressed to capacity. Green infrastructure attempts to restore natural hydrologic processes and decreases the quantity of runoff, reduces peak flow rates, and improves water quality. In addition, green infrastructure can ...
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Monitoring for Long-term Trends in San Diego County
A monitoring program was designed with the San Diego County Co-permittees to: Be adaptive and provide long-term trend information to predict short- and long-term impacts to receiving waters that result from changes in land use within each watershed Provide data that can be analyzed to develop pollutant reduction strategies for those impacts. A total of 10 mass loading stations ...
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Differential water quality in confined and free-flowing water bodies, Lebanon
Integrated management of water resources is a major critical issue to be addressed in combating water stress in developing countries, such as Lebanon. At present, surface water is not properly used in Lebanon. This emphasises the importance of assessing surface water quality as a projected means to increase water availability. This study involves two different water bodies, the freely flowing ...
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Capturing the Potential of Stormwater
Management of the urban water cycle in Australia has changed significantly over the past few decades. Stormwater management philosophy has evolved from the conventional, but still important, flood mitigation paradigm, to the current runoff quality control approach. It is now progressing towards the harvesting and reuse concept whilst retaining the previous two targets. iven the current interest ...
By IVWater
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Water quality assessment and conservation strategies for the upper stretch of Hindon river – a tributary of Yamuna, India
The study was conducted to know the pollution status of upper stretch of Hindon River and its temporal changes over monsoon, post-monsoon and pre-monsoon seasons due to change of physiochemical parameters during the period June 2011 to May 2012. The upper stretch of the river receives large amount of untreated domestic discharge, agricultural runoff and industrial effluents and now considered to ...
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Developing a public information and engagement portal of urban waterways with real-time monitoring and modeling
Waterways can contribute to the beauty and livelihood of urban areas, but maintaining their hydro-ecosystem health is challenging because they are often recipients of contaminated water from stormwater runoff and other discharges. Public awareness of local waterways’ health and community impacts to these waterways is usually poor due to of lack of easily available information. To improve ...
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Aeration for Laguna Niguel Park - Case Study
PROJECT DETAILS LOCATION Laguna Niguel, California, U.S. CUSTOMER Orange County SOLUTION Freshwater Aeration TECHNOLOGIES Five 7.5 horsepower TORNADO® Self-Aspirating Surface Aerators and two Submerged Diffused Air Systems When the water quality of a lake at a regional park began to suffer from runoff and poor aeration, Tornado aerators turned it around. When water quality at ...
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Rainwater harvesting for a government facility in Amberley, QLD - Australia - Case Study
In Amberley is one of the largest base facilities in Australia. The redevelopment works are valued at AU$331.5 million. New construction and refurbishment works to be undertaken include new living-in accommodation, maintenance facilities, storage, working and training accommodation, a combined mess and a new physical fitness centre. The site is owned by anAustralian Government Department. The ...
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Weathering the Storm
Construction excavation and earthmoving recently got a bit more complicated as Phase II of EPAs Storm Water Final Rule went into effect this past spring. The change creates potential for rental dealers who specialize in construction equipment to capitalize on a unique opportunity. While the subject seems new to some, Phase II originated from a 1992 court decision handed down in a lawsuit against ...
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