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Extreme Rainfall Analysis And Estimation Of Probable Maximum Precipitation (Pmp) By Statistical Methods Over The Indus River Basin In India
Journal of Spatial Hydrology
Annual extreme rainfall series of 1-3 day durations at stations located inside the Indus basin in India were subjected to statistical analysis in order to estimate point Probable Maximum Precipitation (PMP) and maximum rainfall of different return periods for the durations of 1-3 days. Daily rainfall data of 210 stations ranging from 1901-2000 (with varying data length) has been considered for the present study. Rainfall distribution of the basin on seasonal and annual scale has been examined. Spatial patterns of 1-3 day extreme rainfall over the basin have been presented which showed that low values of extreme rainfall are located …
Artificial Neural Network Application On Estimation Of Aquifer Transmissivity
Artificial Neural Network Application On Estimation Of Aquifer Transmissivity
Journal of Spatial Hydrology
The present study focuses on the unexplored area of application of artificial neural network in groundwater hydrology. Three models, each based on artificial neural networks, are applied for prediction of zonal transmissivity. These techniques can be considered as black box models that can predict output values for given range of input values after establishing an acceptable relation which is obtained by training the system. The study is based on coupling of Finite Element Method (FEM) - Artificial Neural Network (ANN) model, which serve as forward (FEM) and inverse (ANN) models. An inverse technique using ANN is considered for estimating parameters …
Hurricane Effects On South Florida Water Management System: A Case Study Of Hurricane Wilma Of October 2005
Journal of Spatial Hydrology
An unprecedented eight hurricanes (Charley, Frances, Ivan, Jeanne, Dennis, Katrina, Rita and Wilma) affected South Florida in 2004 and 2005. These storms resulted in high property losses, high rainfall, high surface water flows, rise in lake water levels and damage to water management infrastructure. The last storm to hit was Hurricane Wilma which passed through the central section of South Florida from the west to the east as a Category 2 hurricane with gust wind speed as high as 180 km h-1 and widely affected the area. Apart from the extensive costly wind damage, rainfall from Wilma affected the …
Technical And Institutional Evaluation Of Geray Irrigation Scheme In West Gojjam Zone, Amhara Region, Ethiopia
Journal of Spatial Hydrology
The technical and institutional performance evaluation of Geray Irrigation Scheme was made in order to identify management practices for implementation to improve the system operation and the performance of the irrigation system. The evaluation was made based on the selected performance indicators such as conveyance efficiency, application efficiency, water delivery performance, and maintenance indicators. The availability of institutional and support services were also investigated through a questionnaire administered to beneficiary farmers and other stakeholders. The results obtained showed that the main and tertiary canal conveyance efficiencies were 92 and 82 percents respectively. Many of the secondary and tertiary canals are …
Estimation Of Useful Life Of A Reservoir Using Sediment Trap Efficiency
Estimation Of Useful Life Of A Reservoir Using Sediment Trap Efficiency
Journal of Spatial Hydrology
The most important practical and critical problem related to the performance of reservoirs is the estimation of storage capacity loss due to sedimentation process. The problem to be addressed is to estimate the rate of sediment deposition and the period of time at which the sediment would interfere with the useful functioning of a reservoir. Fairly a large number of methods and models are available for the estimation, analysis and prediction of reservoir sedimentation process. However, these methods and models differ greatly in terms of their complexity, inputs and computational requirements. In the present study, the rate of sedimentation and …