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Water, Volume 13, Issue 7

April-1 2021 - 123 articles

Cover Story: Time-series prediction of a river stage during typhoons or storms is essential for flood disaster prevention. This study presents a multistep-ahead framework involving Bayesian optimization to construct data-driven prediction models based on four ML techniques, namely, support vector regression (SVR), random forest regression (RFR), multilayer perceptron regression (MLPR), and light gradient boosting machine regression (LGBMR) for river stage forecasting. The four models were applied to simulate river stage hydrographs of the tidal reach of the Lan-Yang River Basin in northeastern Taiwan. The results revealed that the LGBMR model could efficiently and accurately predict the 1–6 h river stage in the tidal river. View this paper
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Articles (123)

  • Article
  • Open Access
8 Citations
4,133 Views
22 Pages

6 April 2021

A 2D streamwise velocity model based on the Reynolds Averaged Navier–Stokes (RANS) is a useful approach to predict the boundary shear stress and the streamwise velocity in a free surface stream where secondary flows are not relevant. Boundary conditi...

  • Feature Paper
  • Communication
  • Open Access
9 Citations
3,233 Views
11 Pages

Benthic Metabolism in Fluvial Sediments with Larvae of Lampetra sp.

  • Nerijus Nika,
  • Mindaugas Zilius,
  • Tomas Ruginis,
  • Gianmarco Giordani,
  • Kasparas Bagdonas,
  • Sara Benelli and
  • Marco Bartoli

6 April 2021

Lampreys spend their larval stage within fine sand fluvial sediments, where they burrow and act as filter feeders. Lamprey larvae (ammocoetes) can significantly affect benthic-pelagic coupling and nutrient cycling in rivers, due to high densities. Ho...

  • Feature Paper
  • Article
  • Open Access
4 Citations
2,933 Views
21 Pages

6 April 2021

This paper aims to assess the impact of partitioning on optimal installation of control valves for leakage minimization in water distribution networks (WDNs). The methodology used includes two main elements. The first element is a deterministic algor...

  • Article
  • Open Access
19 Citations
4,650 Views
22 Pages

6 April 2021

Injection water temperature is often different from that of the reservoir during water injection development in the tight reservoir. Temperature change causes different fluid properties and oil-water interface properties, which further affects the im...

  • Article
  • Open Access
2 Citations
4,419 Views
15 Pages

Evaluating the Structure from Motion Technique for Measurement of Bed Morphology in Physical Model Studies

  • Sanat Kumar Karmacharya,
  • Nils Ruther,
  • Ujjwal Shrestha and
  • Meg Bahadur Bishwakarma

5 April 2021

The selection of instrumentation for data acquisition in physical model studies depends on type and resolution of data to be recorded, time frame of the model study, available instrumentation alternatives, availability of skilled personnel and overal...

  • Article
  • Open Access
51 Citations
6,285 Views
18 Pages

Modeling and Optimization of Biochar Based Adsorbent Derived from Kenaf Using Response Surface Methodology on Adsorption of Cd2+

  • Anwar Ameen Hezam Saeed,
  • Noorfidza Yub Harun,
  • Suriati Sufian,
  • Muhammad Roil Bilad,
  • Baiq Asma Nufida,
  • Noor Maizura Ismail,
  • Zaki Yamani Zakaria,
  • Ahmad Hussaini Jagaba,
  • Aiban Abdulhakim Saeed Ghaleb and
  • Baker Nasser Saleh Al-Dhawi

5 April 2021

Cadmium is one of the most hazardous metals in the environment, even when present at very low concentrations. This study reports the systematic development of Kenaf fiber biochar as an adsorbent for the removal of cadmium (Cd) (II) ions from water. T...

  • Article
  • Open Access
2 Citations
4,840 Views
20 Pages

Nexus Thinking at River Basin Scale: Food, Water and Welfare

  • Roberto D. Ponce Oliva,
  • Francisco J. Fernández,
  • Felipe Vasquez-Lavín,
  • Esteban Arias Montevechio,
  • Natalia Julio and
  • Alejandra Stehr

5 April 2021

Water resources face an unparalleled confluence of pressures, with agriculture and urban growth as the most relevant human-related stressors. In this context, methodologies using a Nexus framework seem to be suitable to address these challenges. Howe...

  • Review
  • Open Access
26 Citations
6,994 Views
16 Pages

Aquaculture and Restoration: Perspectives from Mediterranean Sea Experiences

  • Adriana Giangrande,
  • Maria Flavia Gravina,
  • Sergio Rossi,
  • Caterina Longo and
  • Cataldo Pierri

4 April 2021

In this paper, the different possibilities and innovations related to sustainable aquaculture in the Mediterranean area are discussed, while different maricultural methods, and the role of Integrated Multi-Trophic Aquaculture (IMTA) in supporting the...

  • Article
  • Open Access
11 Citations
5,326 Views
13 Pages

Decay of Free Residual Chlorine in Wells Water of Northern Brazil

  • Taise Ferreira Vargas,
  • Célia Ceolin Baía,
  • Tatiana Lemos da Silva Machado,
  • Caetano Chang Dórea and
  • Wanderley Rodrigues Bastos

4 April 2021

The concentration of chlorine in water declines as it reacts with various substances, causing decay of the residual free chlorine until its total consumption. In light of the typical characteristics of the water from protected dug wells and tube well...

  • Feature Paper
  • Article
  • Open Access
8 Citations
3,234 Views
11 Pages

Effect of Bypass-Flow on Leaching of Salts in a Cracking Soil in the Nile Delta

  • Haruyuki Fujimaki and
  • Hassan Mohamed Fahmy Abd El Baki

4 April 2021

Salinity is a major threat to the sustainability of irrigated agriculture in arid and semi-arid regions. Leaching is the primary measure for removing excess salts from the root zone, but not all water applied to the soil surface contributes to the re...

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Water - ISSN 2073-4441