Hydrology Articles

370 Results found
  • Category: Soil & Groundwater ×

  • Subcategory: Hydrology ×

A novel hybrid neural network based on continuity equation and fuzzy pattern-recognition for downstream daily river discharge forecasting

by IWA Publishing  (Aug. 21, 2015)

Forecasting of river discharge is crucial in hydrology and hydraulic engineering owing to its use in the design and management of water resource projects. The problem is customarily settled with data-driven models. In this research, a novel hybrid model which combines continuity equation and fuzzy pattern-recognition concept with artificial ...

Improving the efficiency of Monte Carlo Bayesian calibration of hydrologic models via model pre-emption

by IWA Publishing  (Aug. 21, 2015)

Bayesian inference via Markov Chain Monte Carlo (MCMC) sampling and sequential Monte Carlo (SMC) sampling are popular methods for uncertainty analysis in hydrological modelling. However, application of these methodologies can incur significant computational costs. This study investigated using model pre-emption for improving the computational ...

Using SWAT to simulate streamflow in Huifa River basin with ground and Fengyun precipitation data

by IWA Publishing  (Aug. 21, 2015)

High-resolution satellite precipitation products, which can provide a reasonable depiction of the spatial extent of rainfall, have been increasingly used to model hydrological processes. In this study, we introduced important satellite rainfall data – Fengyun (FY) precipitation product, and evaluated the data through streamflow simulation ...

A stochastic approach for extended partial blockage detection in viscoelastic pipelines: numerical and laboratory experiments

by IWA Publishing  (Aug. 6, 2015)

Partial blockages in water pipe networks may contribute to large energy dissipation throughout the system and reduce service effectiveness for customers. In this paper, a recently developed stochastic model using transients for detecting partial blockages in water pipelines is tested and numerical and experimental case studies are presented. The ...

Evaluation of environmental flow requirements using eco-hydrologic–hydraulic methods in perennial rivers

by IWA Publishing  (Jul. 24, 2015)

The assessment of environmental flows in rivers is of vital importance for preserving riverine ecosystem processes. This paper addresses the evaluation of environmental flow requirements in three reaches along a typical perennial river (the Zab transboundary river, in north-west Iran), using different hydraulic, hydrological and ecological ...

Recent changes in patterns of western Canadian river flow and association with climatic drivers

by IWA Publishing  (Jul. 20, 2015)

Climatic variability and change can have profound impacts on the hydrologic regime of a watershed, especially in regions that are sensitive to changes in climate, such as the northern latitudes and alpine-fed regions of western Canada. Quantifying historical spatial and temporal changes in hydrological data can provide useful information as to ...

Arctic snow distribution patterns at the watershed scale

by IWA Publishing  (Jul. 20, 2015)

Watershed-scale hydrologic models require good estimates of spatially distributed snow water equivalent (SWE) at winter's end. Snow on the ground in arctic environments is susceptible to significant wind redistribution, which results in heterogeneous snowpacks. The scarcity and quality of data collected by snow gauges provides a poor ...

Linking North Slope of Alaska climate, hydrology, and fish migration

by IWA Publishing  (Jul. 20, 2015)

Arctic grayling (Thymallus arcticus) have a life-history strategy specifically adapted to the extreme climate of the North. These fish migrate to spawning grounds just after breakup in the spring, then migrate to feeding sites in early summer, and finally in the fall migrate back to their overwintering sites. The Kuparuk River is a perennial ...

Data quality assessment in hydrological information systems

by IWA Publishing  (Jul. 3, 2015)

The hydrological data fed to hydrological decision support systems might be untimely, incomplete, inconsistent or illogical due to network congestion, low performance of servers, instrument failures, human errors, etc. It is imperative to assess, monitor and even control the quality of hydrological data residing in or acquired from each link of ...

Probabilistic nature of storage delay parameter of the hydrologic model RORB: a case study for the Cooper's Creek catchment in Australia

by IWA Publishing  (Jun. 3, 2015)

In rainfall–runoff modeling, Design Event Approach is widely adopted in practice, which assumes that the rainfall depth of a given annual exceedance probability (AEP), can be converted to a flood peak of the same AEP by assuming a representative fixed value for the other model inputs/parameters such as temporal pattern, losses and ...

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