U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject dams (hydrology) Remove constraint Subject: dams (hydrology) Subject sediments Remove constraint Subject: sediments
Start Over

Search

298  Search Results

« Previous | 1 - 50 of 298 |
Number of results to display per page

Search Results

1. Classification of Scouring Form of Homogeneous and Sticky Earth Dams in Overtopping

Author:
S. salehi; A.R Esmaili; K. Esmaili
Source:
̒Ulūm-i āb va khāk 2022 v.25 no.4 pp. 283-298
ISSN:
2476-5554
Subject:
dams (hydrology); models; sediments; shear stress; streams
Abstract:
... The objective of this study was to investigate how the earth dam is destroyed due to the effect of upstream and downstream slope of the body in overflow conditions. Therefore, eight models were provided that each model is constructed from the embankment dam with different upstream and downstream slopes (1:1, 2:1) and the soil properties (Sc) on breach formation. The time and method of dam break fo ...

2. Riverbed deformation and its response to human intervention on the lower reaches of the Yangtze River

Author:
Xu Wei; Cheng Heqin; Zheng Shuwei; Jiang Yuehua; Zhou Quanping; Yang Guoqiang; Yan Huaizhi
Source:
River research and applications 2022 v.38 no.2 pp. 222-234
ISSN:
1535-1459
Subject:
dams (hydrology); deformation; evolution; humans; prediction; quantitative analysis; research; rivers; sediments; stream channels; Yangtze River
Abstract:
... The operation of the world's largest hydropower dam, the Three Gorges Dam (TGD), has significantly influenced the middle and lower reaches of the Yangtze River (YR). However, research has not been conducted on the impact of local engineering projects on the evolution of the tidal channel of the YR. This study used historical water depth and level data to analyze the factors influencing riverbed de ...
DOI:
10.1002/rra.3899

3. Economics of Optimal Reservoir Capacity Determination, Sediment Management, and Dam Decommissioning

Author:
Yuan Niu; Farhed A. Shah
Source:
Water resources research 2021 v.57 no.7 pp. e2020WR028198
ISSN:
0043-1397
Subject:
dams (hydrology); economics; models; research; sediments; water
Abstract:
... The lifetime net economic contribution of a dam that is subject to sedimentation is likely to depend on the storage capacity of its reservoir, how fast the capacity is lost to sedimentation, and the cost of ultimate decommissioning of the dam. A model is developed for determining the size of initial reservoir capacity of a dam to maximize lifetime net benefits, while allowing for the possibility o ...
DOI:
10.1029/2020WR028198

4. Economics of Optimal Reservoir Capacity Determination, Sediment Management, and Dam Decommissioning

Author:
Yuan Niu; Farhed A. Shah
Source:
Water Resources Research 2021 v.57 no.7 pp. -
ISSN:
0043-1397
Subject:
dams (hydrology); economics; models; research; sediments; water
Abstract:
... The lifetime net economic contribution of a dam that is subject to sedimentation is likely to depend on the storage capacity of its reservoir, how fast the capacity is lost to sedimentation, and the cost of ultimate decommissioning of the dam. A model is developed for determining the size of initial reservoir capacity of a dam to maximize lifetime net benefits, while allowing for the possibility o ...
Handle:
10113/7544623
DOI:
10.1029/2020wr028198
CHORUS:
10.1029/2020wr028198

5. Influence of hydrological regime on spatiotemporal distribution of boron in sediments in the Three Gorges Reservoir, China

Author:
Dongyu Xu; Bo Gao; Li Gao
Source:
Journal of hydrology 2021 v.601 pp. 126818
ISSN:
0022-1694
Subject:
boron; dams (hydrology); models; principal component analysis; risk; river flow; sediments; spatial variation; toxicity; water power; China
Abstract:
... Hydropower dam construction can alter the continuity of the river flow, thereby influencing geochemical cycle of seldom monitored trace elements due to the change of hydrological regime by reservoir regulation. Here, we investigated the response of hydrological regime on migration of boron (B) in the sediments of Three Gorges Reservoir (TGR) using multiple geochemical approaches. Although B concen ...
DOI:
10.1016/j.jhydrol.2021.126818

6. Lowering water level of Dongting lake of the Mid-Yangtze River in response to large-scale dam construction: A 60-year analysis

Author:
Xiaohe Lai; Haiwei Chen; Yuebao Hou; Brian Finlayson; Maotian Li; Jing Chen
Source:
Geomorphology 2021 v.391 pp. 107894
ISSN:
0169-555X
Subject:
anthropogenic activities; dams (hydrology); lakes; meteorological data; rain; river flow; sediment contamination; sediment deposition; sediments; surface water level; watersheds; China; Yangtze River
Abstract:
... River-lake systems, crucial to both the ecological environment and societal development, have been affected by increasing anthropogenic activities in addition to climate and environmental changes. Here, annual water discharge and sediment load data (1956–2017) and rainfall data (1960–2016) from Dongting Lake in the middle catchment of the Yangtze River were analysed at four major inlets and one ou ...
DOI:
10.1016/j.geomorph.2021.107894

7. Quantifying uncertainty of sediment fingerprinting mixing models using frequentist and Bayesian methods: A case study from the Iranian loess Plateau

Author:
Aboalhasan Fathabadi; John D. Jansen
Source:
Catena 2022 v.217 pp. 106474
ISSN:
0341-8162
Subject:
Bayesian theory; Monte Carlo method; agricultural land; case studies; catenas; dams (hydrology); humans; landscape management; provenance; rangelands; sediments; soil; uncertainty; vegetation; watersheds; China; Iran
Abstract:
... Sediment fingerprinting is widely used in drainage basin analysis to identify the provenance and source contributions of sediments (or other material) in transit from source-to-sink. By enabling source areas of sediment supply to be targeted, the method has become an integral part of sustainable landscape management. The precision and accuracy of sediment fingerprinting is contingent on the choice ...
DOI:
10.1016/j.catena.2022.106474

8. Spatial distribution of multielements including lanthanides in sediments of Iron Gate I Reservoir in the Danube River

Author:
Otilia Ana Culicov; Tatjana Trtić-Petrović; Roman Balvanović; Anđelka Petković; Slavica Ražić
Source:
Environmental science and pollution research 2021 v.28 no.33 pp. 44877-44889
ISSN:
0944-1344
Subject:
chemometrics; dams (hydrology); environmental fate; lanthanides; pollution; research; sediments; Danube River
Abstract:
... Recent studies show that lanthanides (Ln) are becoming emerging pollutants due to their wide application in new technologies, but their environmental fate, transport, and possible accumulation are still relatively unknown. This study aims to determine major and trace elements including Ln in the Danube River sediment which either belong or close to the Iron Gate Reservoir. The Iron Gate Reservoir ...
DOI:
10.1007/s11356-021-13752-6

9. Time evolution of scour hole and flow characteristics upstream of a flushing orifice

Author:
Alireza Keshavarzi; Gholam Reza Mohammadi; Hossein Hamidifar
Source:
ISH journal of hydraulic engineering 2022 v.28 no.S1 pp. 199-206
ISSN:
2164-3040
Subject:
dams (hydrology); diarrhea; equations; flow; hydraulic engineering; journals; regression analysis; sediment deposition; sediments; temporal variation
Abstract:
... Reservoir sedimentation is significant for the efficiency and life of a dam. Flushing orifices have been used in many small dams and other hydraulic structures to remove deposited sediments. Temporal variations of scour hole dimensions, velocity distribution, and secondary flows in the scour hole upstream of an orifice are investigated here. The experiments were conducted under clear water conditi ...
DOI:
10.1080/09715010.2020.1734108

10. A USLE-based model with modified LS-factor combined with sediment delivery module for Alpine basins

Author:
Konstantinos Kaffas; Vassilios Pisinaras; Mario J. Al Sayah; Simone Santopietro; Maurizio Righetti
Source:
Catena 2021 v.207 pp. 105655
ISSN:
0341-8162
Subject:
Universal Soil Loss Equation; basins; catenas; dams (hydrology); landscapes; rain; sediment yield; sediments; soil erosion; topography; water power; Alps region; Italy
Abstract:
... Sedimentation in reservoirs constitutes a major issue worldwide, especially when hydropower, and hence profit, is involved. In this study, the sedimentation rates, due to soil erosion and sediment yields, are analyzed in the reservoir of the Rio di Pusteria hydropower dam, in South Tyrol (Italian Alps). The focus is on a five-year period, between two consecutive sediment flushing operations occurr ...
DOI:
10.1016/j.catena.2021.105655

11. A hydroelectric dam borrow pit rehabilitation. Two decades after the project, what went wrong?

Author:
Yuri A. Figueiredo de Souza; Mariangela G.P. Leite; Maria A.G. Fujaco
Source:
Journal of environmental management 2021 v.293 pp. 112850
ISSN:
0301-4797
Subject:
clay; dams (hydrology); ecosystems; environmental sustainability; erosion control; land restoration; organic matter; sediments; soil; soil ecology; unmanned aerial vehicles; vegetation cover
Abstract:
... Although environmental rehabilitation projects that did not succeed are not uncommon, there are few research papers that deal with the subject. Works on the rehabilitation of borrow pits are even more rare. In an attempt to fulfill some gaps, the present study sought to evaluate the effectiveness of a program for the restoration of a clay borrow pit used for the construction of a hydroelectric pla ...
DOI:
10.1016/j.jenvman.2021.112850

12. Acidity and metallic elements release from AMD-affected river sediments: Effect of AMD standstill and dilution

Author:
Meiqin Chen; Guining Lu; Jingxiong Wu; Jianteng Sun; Chengfang Yang; Yingying Xie; Kaifeng Wang; Fucai Deng; Xiaoyun Yi; Zhi Dang
Source:
Environmental research 2020 v.186 pp. 109490
ISSN:
0013-9351
Subject:
Fourier transform infrared spectroscopy; acid mine drainage; acidity; adsorption; anion exchange; arsenic; cadmium; cations; copper; dams (hydrology); dialysis; environmental factors; environmental hazards; heavy metals; iron; lead; manganese; minerals; moieties; oxyanions; pH; phase transition; protons; remediation; rivers; sediments; sulfates; toxic substances; zinc
Abstract:
... In acid mine drainage (AMD) polluted rivers, considerable fraction of potential toxic elements are temporarily sequestered by sediments. There are two main potential environmental hazards associated with the sediments, acidity liberation and re-mobilization of metallic elements, during environmental conditions change. The effects of AMD standstill and water dilution on metallic elements migration ...
DOI:
10.1016/j.envres.2020.109490

13. Assessment of Ecologic Quality in Terms of Heavy Metal Concentrations in Sediment and Fish on Sakarya River and Dam Lakes, Turkey

Author:
Esengül Köse; Özgür Emiroğlu; Arzu Çiçek; Sadi Aksu; Sercan Başkurt; Cem Tokatli; Merve Şahin; Alper Uğurluoğlu
Source:
Soil & sediment contamination 2020 v.29 no.3 pp. 292-303
ISSN:
1549-7887
Subject:
Capoeta; Carassius gibelio; Food and Agriculture Organization; atomic absorption spectrometry; chromium; copper; dams (hydrology); dry season; ecosystems; fish; fisheries; guidelines; heavy metals; lakes; laws and regulations; lead; liver; muscles; nickel; rivers; sediments; tissues; wet season; zinc; Turkey (country)
Abstract:
... Sakarya River with a length of 824 km is one of the most important lothic ecosystems of Turkey. Sarıyar, Gökçekaya and Yenice Dams were constructed on the Sararya River for the purpose of electric supply and utility water for agricultural and fishery activities. In this study, sediment samples were collected from 14 stations selected on areas seasonally (2015–2016). Also, cyprinidae species (Caras ...
DOI:
10.1080/15320383.2019.1705755

14. Bacterial community structure upstream and downstream of cascade dams along the Lancang River in southwestern China

Author:
Xia Luo; Xinyi Xiang; Guoyi Huang; Xiaorui Song; Peijia Wang; Yuanhao Yang; Kaidao Fu; Rongxiao Che
Source:
Environmental science and pollution research international 2020 v.27 no.34 pp. 42933-42947
ISSN:
0944-1344
Subject:
bacterial communities; bacterioplankton; carbon; community structure; dams (hydrology); ecosystems; genes; pollution; research; riparian areas; rivers; sediments; surface water; temperature; China
Abstract:
... Extensive construction of dams by humans has caused alterations in flow regimes and concomitant alterations in river ecosystems. Even so, bacterioplankton diversity in large rivers influenced by cascade dams has been largely ignored. In this study, bacterial community diversity and profiles of seven cascade dams along the720 km of the Lancang River were studied using Illumina sequencing of the V3- ...
DOI:
10.1007/s11356-020-10159-7

15. Can coarse bedload pass through weirs?

Author:
Alexandre Peeters; Geoffrey Houbrechts; Eric Hallot; Jean Van Campenhout; Frédéric Gob; François Petit
Source:
Geomorphology 2020 v.359 pp. 107131
ISSN:
0169-555X
Subject:
bedload; dams (hydrology); gates; planning; rivers; sediment transport; sediments; slags; streams; weirs; Belgium
Abstract:
... Restoring active bedload transfer in human-impacted rivers has received increasing attention in recent years, notably in response to the European Water Framework Directive (WFD), which requires that the continuity of rivers not be disturbed by anthropogenic features such as dams or weirs. The Bocq River (233 km²), a moderate-gradient stream in Wallonia, Belgium, has a hydraulic resource that was f ...
DOI:
10.1016/j.geomorph.2020.107131

16. Channel stability assessment in the lower reaches of the Krishna River (India) using multi-temporal satellite data during 1973–2015

Author:
Jobin Thomas; Sachidanand Kumar; K.P. Sudheer
Source:
Remote sensing applications 2020 v.17 pp. 100274
ISSN:
2352-9385
Subject:
Landsat; bank erosion; dams (hydrology); remote sensing; river deltas; rivers; sediments; India
Abstract:
... The present study examines the extent of erosion and deposition along the banks of the lower reaches of the Krishna River (India) between 1973 and 2015, by analyzing the shifts in the bank lines using Landsat images of the years 1973, 1991 and 2015. The analysis is limited to the river segment downstream of the Nagarjuna Sagar Dam up to the Krishna Delta (318 km). The results indicated that the to ...
DOI:
10.1016/j.rsase.2019.100274

17. Characterizing a riverine microbiome impacted by extreme disturbance caused by a mining sludge tsunami

Author:
Mariana P. Reis; Maria Luíza S. Suhadolnik; Marcela F. Dias; Marcelo P. Ávila; Amanda M. Motta; Francisco A.R. Barbosa; Andréa M.A. Nascimento
Source:
Chemosphere 2020 v.253 pp. 126584
ISSN:
0045-6535
Subject:
Bacteriovorax; Comamonadaceae; Sphingomonas; aromatic compounds; bacteria; community structure; dams (hydrology); disasters; genes; iron; microbiome; mining; oxidants; prediction; ribosomal RNA; riparian areas; rivers; sediments; sequence analysis; sludge; tsunamis
Abstract:
... Studies on disturbance events in riverine systems caused by environmental disasters and their effects on microbial diversity are scarce. Here, we evaluated the impact of the collapse of an iron ore dam holding approximately 50 million cubic meters of waste on both water and sediment microbiomes by deeply sequencing the 16S rRNA gene. Samples were taken from two impacted rivers and one reference ri ...
DOI:
10.1016/j.chemosphere.2020.126584

18. Combining UAV-Based SfM-MVS Photogrammetry with Conventional Monitoring to Set Environmental Flows: Modifying Dam Flushing Flows to Improve Alpine Stream Habitat

Author:
Stuart N. Lane; Alice Gentile; Lucien Goldenschue
Source:
Remote Sensing 2020 v.12 no.23 pp. -
ISSN:
2072-4292
Subject:
dams (hydrology); environment; flow; habitats; models; monitoring; photogrammetry; remote sensing; rivers; sediments; shear stress; spatial data; streams; supply; testing
Abstract:
... Setting environmental flows downstream of hydropower dams is widely recognized as important, particularly in Alpine regions. However, the required flows are strongly influenced by the effects of the physical environment of the downstream river. Here, we show how unmanned aerial vehicle (UAV)-based structure-from-motion multiview stereo (SfM-MVS) photogrammetry allows for incorporation of such effe ...
DOI:
10.3390/rs12233868

19. Decadal changes in sediment budget and morphology in the tidal reach of the Yangtze River

Author:
Bing Yuan; Binliang Lin; Jian Sun
Source:
Catena 2020 v.188 pp. 104438
ISSN:
0341-8162
Subject:
coasts; dams (hydrology); riparian areas; rivers; sediments; tides; Yangtze River
Abstract:
... In the last few decades, riverine sediment flux to the coastal zones has been decreasing globally. The sediment flux from rivers to seas is usually estimated based on the lowermost gauging stations free of tides in the rivers, for example the Yangtze River. Knowledge of decadal sediment budget and the morphological evolution in the tidal reach is still limited. Here, using historical bathymetry of ...
DOI:
10.1016/j.catena.2019.104438

20. Ecology and movement of juvenile salmonids in beaver‐influenced and beaver‐free tributaries in the Trøndelag province of Norway

Author:
Rachel L. Malison; Duncan J. Halley
Source:
Ecology of freshwater fish 2020 v.29 no.4 pp. 623-639
ISSN:
0906-6691
Subject:
Castor fiber; Salmo salar; Salmo trutta; dams (hydrology); ecosystem engineering; ecosystem engineers; habitat destruction; habitats; juveniles; lotic systems; ponds; rivers; salmon; sediments; trout; Norway
Abstract:
... There is concern that expanding beaver (Castor fiber) populations will negatively impact the important economic, recreational and ecological resources of Atlantic salmon (Salmo salar) and sea trout (Salmo trutta) populations in Europe. We studied how beaver dams influenced habitat, food resources, growth and movement of juvenile Atlantic salmon and trout on three paired beaver‐dammed and beaver‐fr ...
DOI:
10.1111/eff.12539

21. Effects of Land Cover Changes on Sediment and Nutrient Balance in the Catchment with Cascade-Dammed Waters

Author:
Dawid Szatten; Michał Habel
Source:
Remote Sensing 2020 v.12 no.20 pp. -
ISSN:
2072-4292
Subject:
area; climate change; correlation; dams (hydrology); decision making; dynamics; environment; exhibitions; face; hydrologic data; land cover; nutrient balance; nutrients; pollution load; remote sensing; research; research methods; rivers; sediments; suspended sediment; temporal variation; total nitrogen; total phosphorus; trapping; water; water quality; watersheds; Poland
Abstract:
... It is commonly believed that changes in the use of the catchment area have a direct impact on the quality of the water environment. Rivers with dams and reservoirs are characterized by a disturbed outflow of sediments and nutrients from the catchment area. The research was based on indicating the variation in time and space of loads of selected parameters of the water quality of the Brda River (No ...
DOI:
10.3390/rs12203414

22. Environmental surveillance of human enteric viruses in wastewaters, groundwater, surface water and sediments of Campania Region

Author:
Barbara Cioffi; Marina Monini; Michela Salamone; Roberta Pellicanò; Ilaria Di Bartolo; Marco Guida; Giuseppina La Rosa; Giovanna Fusco
Source:
Regional studies in marine science 2020 v.38 pp. 101368
ISSN:
2352-4855
Subject:
Adenoviridae; Hepatovirus A; Kobuvirus; Norovirus; Rotavirus; Sapovirus; dams (hydrology); environmental monitoring; flocculation; groundwater; pathogens; phylogeny; pollution control; public health; quantitative polymerase chain reaction; rivers; sediments; surface water; viral diseases of animals and humans; viruses; wastewater; wastewater treatment; wells; Italy
Abstract:
... Enteric viruses represent a public health risk since they are involved in foodborne and waterborne outbreaks. The aim of this study was to investigate the circulation of select human enteric viruses — hepatitis A virus (HAV), noroviruses (NoVGI and NoVGII), adenovirus (AdV), rotavirus (RV), astrovirus (AsV), sapovirus (SaV) and aichivirus (AiV) – in wastewater and in environmental samples (groundw ...
DOI:
10.1016/j.rsma.2020.101368

23. Evaluating effects of dam operation on flow regimes and riverbed adaptation to those changes

Author:
Piotr Jacek Gierszewski; Michał Habel; Jacek Szmańda; Małgorzata Luc
Source:
Science of the total environment 2020 v.710 pp. 136202
ISSN:
0048-9697
Subject:
dams (hydrology); geomorphology; hydroelectric power; power plants; river flow; rivers; runoff; sediments; stream channels; water erosion
Abstract:
... The operation of dam and reservoirs is one of the main reasons for the transformation of river runoff. The change in the hydrological regime affects a number of other processes taking place in the river channel, including the transformation of its geomorphological features. The article presents the impact of the Włocławek Reservoir on the hydrological regime of the lower Vistula. The alterations o ...
DOI:
10.1016/j.scitotenv.2019.136202

24. Evaluating the effect of dam construction on the phosphorus fractions in sediments in a reservoir of drinking water source, China

Author:
Lihuan Qin; Pei Lei; Qiuliang Lei; Hongbin Liu; Xuyong Li; Hong Zhang; Stuart Lindsey
Source:
Environmental monitoring and assessment 2020 v.192 no.2 pp. 99
ISSN:
0167-6369
Subject:
aquatic ecosystems; bioavailability; dams (hydrology); drinking water; environmental management; phosphorus; pollution load; sediment transport; sediments; total phosphorus; water quality; water supply; China
Abstract:
... It is widely acknowledged that dams affect sediment transport and water quality. To support water management of reservoirs, it is useful to explore how the fractions of phosphorus (P) in sediments were changed after the dam was built. The aim of this study was to assess the spatial and temporal trends of the P fractions in sediments from the Miyun Reservoir, a pivotal drinking water supply for Bei ...
DOI:
10.1007/s10661-019-8053-4

25. Geochemical distribution of selected elements in flotation tailings and soils/sediments from the dam spill at the abandoned antimony mine Stolice, Serbia

Author:
Dragana Ranđelović; Jelena Mutić; Prvoslav Marjanović; Tamara Đorđević; Milica Kašanin-Grubin
Source:
Environmental science and pollution research international 2020 v.27 no.6 pp. 6253-6268
ISSN:
0944-1344
Subject:
antimony; arsenic; cadmium; coatings; dams (hydrology); environmental assessment; feldspar; lead; manganese oxides; mine tailings; multivariate analysis; physicochemical properties; quartz; remediation; rivers; sediments; slurries; soil; watersheds; zinc; Serbia
Abstract:
... Materials held within mine tailings pose a serious risk to the environment in cases of tailings dam failure. Collapse of the tailing dam at the Stolice antimony mine in West Serbia caused a spilling of tailing slurry into the nearby river watersheds. Medium-term effects of As, Pb, Sb, Zn, and Cd from the tailings material that remained in the flooded zone 3 years after the initial exposure were ev ...
DOI:
10.1007/s11356-019-07348-4

26. Impacts of artificial barriers on the connectivity and dispersal of vascular macrophytes in rivers: A critical review

Author:
Peter E. Jones; Sofia Consuegra; Luca Börger; Joshua Jones; Carlos Garcia de Leaniz
Source:
Freshwater biology 2020 v.65 no.6 pp. 1165-1180
ISSN:
0046-5070
Subject:
biodiversity; birds; dams (hydrology); ecological footprint; empirical research; fish; habitats; hydrochemistry; hydrochory; lentic systems; macroinvertebrates; macrophytes; population dynamics; river regulation; rivers; sediments; zoochory
Abstract:
... Macrophytes play important functional roles in river ecosystems, providing habitat and food, as well as influencing flow, water chemistry, and sediment dynamics. They also represent an important component of river biodiversity. Artificial river barriers have the potential to disrupt macrophyte dispersal, and compromise their distribution and persistence, but little information is available compare ...
DOI:
10.1111/fwb.13493

27. Impacts of flow regulation on geomorphic adjustment and riparian vegetation succession along an anabranching reach of the Upper Yellow River

Author:
Meiqin Han; Gary Brierley; Bing Li; Zhiwei Li; Xilai Li
Source:
Catena 2020 v.190 pp. 104561
ISSN:
0341-8162
Subject:
dams (hydrology); ecological succession; floodplains; models; remote sensing; riparian vegetation; rivers; sediments; water power; water table; China; Yellow River
Abstract:
... Closure of Longyangxia Dam in 1986, the uppermost large dam along the trunk stream of the Upper Yellow River in western China, permanently altered the flow regime in Guide reach, an anabranching section of river located 41 km downstream of the dam. Two smaller hydropower structures, Nina and Laxiwa Dams, were constructed between Longyangxia Dam and Guide in 2003 and 2009 respectively, but they had ...
DOI:
10.1016/j.catena.2020.104561

28. Improvement on numerical modeling of total dissolved gas dissipation after dam

Author:
Chenjun Zeng; Kangle Mo; Qiuwen Chen
Source:
Ecological engineering 2020 v.156 pp. 105965
ISSN:
0925-8574
Subject:
dams (hydrology); data collection; dissolved oxygen; ecological restoration; equations; fish; mathematical models; rivers; sediments; surveys; uncertainty; Yangtze River
Abstract:
... Discharge from high dam causes total dissolved gas (TDG) supersaturation, which dissipates slowly along the downstream river and induces fish bubble disease. The dissipation process is closely related to the hydraulic condition. In most TDG prediction models, the hydraulic condition is lumped in a parameter called the dissipation coefficient (k), whose determination usually contains large uncertai ...
DOI:
10.1016/j.ecoleng.2020.105965

29. Influence of exposure time on phosphorus composition and bioavailability in wetland sediments from Poyang lake, since the operation of the Three Gorges Dam

Author:
Zhaokui Ni; Shengrui Wang; Yue Wu; Xiaofei Liu; Ripeng Lin; Zhezhe Liu
Source:
Environmental pollution 2020 v.263 pp. 114591
ISSN:
0269-7491
Subject:
analysis of variance; bioavailability; biogeochemical cycles; dams (hydrology); drying; ecosystems; environmental factors; enzymatic hydrolysis; exposure duration; lakes; phosphorus; phytomass; population distribution; sediments; temporal variation; water quality; wet season; wetlands
Abstract:
... The role of exposure time on wetland sediment-bound phosphorus (P) biogeochemical behavior is studied in Lake Poyang after the operation of the Three Gorges Dam (TGD). The multiple P compounds primarily include orth–P (88.3%), mono–P (8.9%), DNA–P (2.1%), and pyro–P (0.8%) in the exposed sediments. A significant decreasing trend of orth–P occurred after the operation of the Three Gorges Dam (TGD), ...
DOI:
10.1016/j.envpol.2020.114591

30. Metal levels in two fish species from a waterbody impacted by metallurgic industries and acid mine drainage from coal mining in South Africa

Author:
Jeffrey Lebepe; Paul J. Oberholster; Ignatious Ncube; Willem Smit; Wilmien J Luus-Powell
Source:
Journal of environmental science and health 2020 v.55 no.4 pp. 421-432
ISSN:
1532-4117
Subject:
Labeo rosae; Oreochromis mossambicus; acid mine drainage; antimony; arsenic; chromium; coal; cobalt; dams (hydrology); fish; fish meat; human health; mining; muscles; rivers; rural communities; seasonal variation; sediments; selenium; surface water; Mozambique; South Africa
Abstract:
... The Loskop Dam in South Africa is the most contaminated waterbody in the Olifants River which is a transboundary river that flows into Mozambique. The present study measured selected metal concentrations in the muscle of Labeo rosae and Oreochromis mossambicus from Loskop Dam, and assessed the human health risks associated with consumption of these fish species. Trace metals were below detection l ...
DOI:
10.1080/10934529.2019.1704604

31. Modelling hyperconcentrated floods in the Middle Yellow River using an improved river network model

Author:
Zenghui Wang; Junqiang Xia; Meirong Zhou; Shanshan Deng; Tao Li
Source:
Catena 2020 v.190 pp. 104544
ISSN:
0341-8162
Subject:
algorithms; dams (hydrology); floods; hydrodynamics; model validation; models; momentum; pollution load; prediction; rivers; sediment transport; sediment yield; sediments; Yellow River
Abstract:
... In the section of the Middle Yellow River from Longmen to the Sanmenxia Dam, the prediction to hyperconcentrated flood processes is difficult because of the abrupt change of channel geometry along the river and the high variability of the amount of flood water and sediment load from the main river and tributaries. A river network model based on a Godunov-type FVM scheme is proposed in order to inv ...
DOI:
10.1016/j.catena.2020.104544

32. Morphometry of gullies and bioengineering for sediment retention in the Mixteca Region of Oaxaca, Mexico

Author:
Verónica Guadalupe Lira-Caballero; Mario Roberto Martínez-Menez; Angélica Romero-Manzanares; Edmundo García-Moya; José Donaldo Ríos-Berber; Erasmo Rubio-Granados
Source:
International journal of ecohydrology & hydrobiology 2020 v.20 no.2 pp. 289-300
ISSN:
1642-3593
Subject:
bioengineering; dams (hydrology); digital elevation models; drainage systems; gully erosion; morphometry; ravines; sediments; soil; surveys; topography; watersheds; Mexico
Abstract:
... Bioengineering is a technical option which uses selected biological elements to retain soil and rehabilitate areas with gullies. With this aim, bioengineering practices were implemented to recover areas affected by gully erosion in a micro-watershed located in the Mixteca, an important region in the Mexican state of Oaxaca. The restoration plan was to rehabilitate an old stone check dam located in ...
DOI:
10.1016/j.ecohyd.2020.03.001

33. On the cumulative dam impact in the upper Changjiang River: Streamflow and sediment load changes

Author:
Chao Guo; Zhongwu Jin; Leicheng Guo; Jinyou Lu; Shi Ren; Yinjun Zhou
Source:
Catena 2020 v.184 pp. -
ISSN:
0341-8162
Subject:
anthropogenic activities; aquatic ecosystems; basins; climate change; dams (hydrology); nutrient content; pollution load; rivers; sediment yield; sediments; stream flow; suspended sediment; Yangtze River
Abstract:
... Climate change and anthropogenic activities such as dam construction alter basin-scale hydrological regime of a river. The upper Changjiang River (uCR) stands out as one of the most heavily dammed rivers in the world after the construction of the Three Gorges Dam (TGD) and other large dams in its mainstem. Quantification of the cumulative dam impact is prerequisite for better river management. In ...
DOI:
10.1016/j.catena.2019.104250

34. Outflow sediment concentration forecasting by integrating machine learning approaches and time series analysis in reservoir desilting operation

Author:
Ming-Jui Chang; Gwo-Fong Lin; Fong-Zuo Lee; Yi-Cheng Wang; Peng-An Chen; Ming-Chang Wu; Jihn-Sung Lai
Source:
Stochastic environmental research and risk assessment 2020 v.34 no.6 pp. 849-866
ISSN:
1436-3240
Subject:
dams (hydrology); models; power plants; sediments; support vector machines; temporal variation; time series analysis; turbidity; typhoons; Taiwan
Abstract:
... During typhoons, outflow sediment concentration at dam outlets should be accurately forecast for increasing the efficiency of turbidity current venting in reservoir desilting operations. However, forecasting hourly outflow sediment concentration is difficult because of complex physical processes and high temporal variability. This study proposes an outflow sediment concentration forecasting model ...
DOI:
10.1007/s00477-020-01802-3

35. Preliminary assessment of the ability of detainment bunds to attenuate sediment and phosphorus transported by surface runoff in the Lake Rotorua catchment

Author:
Brian Levine; Lucy Burkitt; Dave Horne; Leo Condron; Chris Tanner; John Paterson
Source:
Animal production science 2020 v.60 no.1 pp. 154-158
ISSN:
1836-0939
Subject:
agricultural runoff; basins; bunds; computer software; dams (hydrology); ephemeral streams; lakes; models; nutrient management; nutrients; overland flow; pastoralism; pastures; phosphorus; pollution control; pollution load; sediments; storms; suspended sediment; total phosphorus; water pollution; water quality; watersheds; New Zealand
Abstract:
... Water-quality impairment due to excess nutrients entering Lake Rotorua has been recognised since the 1960s. So as to improve water-quality, the 2012 Lake Rotorua Nutrient Management Plan has set a target to reduce phosphorus (P) loads delivered to the lake by 10 t/year from a baseline of ~40 t P/year. Dissolved P and sediment-bound P loss from agriculture have been identified as significant source ...
DOI:
10.1071/AN18544

36. Reservoir deltas and their role in pollutant distribution in valley-type dam reservoirs: Les Království Dam, Elbe River, Czech Republic

Author:
Ondřej Bábek; Ondřej Kielar; Zuzana Lenďáková; Kateřina Mandlíková; Jan Sedláček; Jitka Tolaszová
Source:
Catena 2020 v.184 pp. -
ISSN:
0341-8162
Subject:
X-radiation; aluminum; basins; cesium; copper; dams (hydrology); floods; fluorescence; ground-penetrating radar; iron; lakes; lead; models; pollutants; pollution; polycyclic aromatic hydrocarbons; radionuclides; river valleys; rivers; sediments; spatial distribution; topography; total organic carbon; toxicity; watersheds; zinc; Czech Republic
Abstract:
... Interpretation of catchment pollution history from sediment cores is a common approach for dam reservoirs, but relatively little is known about the spatial distribution of pollutants in the lithologically diverse depositional subsystems. We studied the depositional system of a hundred-year-old valley-type reservoir of the Les Království Dam built in 1919 on the upper reaches of the Elbe River, Cze ...
DOI:
10.1016/j.catena.2019.104251

37. River suspended sediment load prediction based on river discharge information: application of newly developed data mining models

Author:
Sinan Q. Salih; Ahmad Sharafati; Khabat Khosravi; Hossam Faris; Ozgur Kisi; Hai Tao; Mumtaz Ali; Zaher Mundher Yaseen
Source:
Hydrological sciences journal 2020 v.65 no.4 pp. 624-637
ISSN:
2150-3435
Subject:
artificial intelligence; dams (hydrology); databases; models; pollution load; prediction; river engineering; river flow; rivers; sediment yield; sediments; suspended sediment; sustainable engineering; Delaware River; United States
Abstract:
... Suspended sediment load (SSL) is one of the essential hydrological processes that affects river engineering sustainability. Sediment has a major influence on the operation of dams and reservoir capacity. This investigation is aimed at exploring a new version of machine learning models (i.e. data mining), including M5P, attribute selected classifier (AS M5P), M5Rule (M5R), and K Star (KS) models fo ...
DOI:
10.1080/02626667.2019.1703186

38. Spatial and temporal variability of metal(loid)s concentration as well as simultaneous determination of five arsenic and antimony species using HPLC-ICP-MS technique in the study of water and bottom sediments of the shallow, lowland, dam reservoir in Poland

Author:
Magdalena Jabłońska-Czapla; Katarzyna Grygoyć
Source:
Environmental science and pollution research international 2020 v.27 no.11 pp. 12358-12375
ISSN:
0944-1344
Subject:
anthropogenic activities; antimony; arsenic; atomic absorption spectrometry; barium; cadmium; chromium; cobalt; copper; dams (hydrology); heavy metals; high performance liquid chromatography; lead; manganese; morphometry; nickel; pH; pollution load; redox potential; rubidium; sediment contamination; sediments; strontium; temporal variation; thallium; water reservoirs; zinc; Poland
Abstract:
... The optimization of new methodology for simultaneous determination of arsenic [As(III), As(V)] and antimony [Sb(III), Sb(V), SbMe₃] species using high-performance liquid chromatography (HPLC) coupled with inductively coupled plasma mass spectrometry (ICP-MS) in water and bottom sediment samples collected from the dam Kozłowa Góra Reservoir (Poland) was studied. Samples were collected monthly from ...
DOI:
10.1007/s11356-020-07758-9
PubMed:
31993903
PubMed Central:
PMC7136309

39. Spatio-temporal changes in surface water quality and sediment phosphorus content of a large reservoir in Turkey

Author:
Memet Varol
Source:
Environmental pollution 2020 v.259 pp. 113860
ISSN:
0269-7491
Subject:
aquaculture; calcium; calcium bicarbonate; chemical oxygen demand; chlorides; chlorophyll; cluster analysis; dams (hydrology); discriminant analysis; eutrophication; factor analysis; guidelines; irrigation; magnesium; nitrate nitrogen; nutrients; organic matter; potassium; principal component analysis; reactive phosphorus; recreation; rivers; sediments; sulfates; surface water; temporal variation; total phosphorus; water quality; water temperature; Ontario; Turkey (country)
Abstract:
... The Keban Dam Reservoir, located on the Euphrates River, is the second largest reservoir of Turkey. Water quality of this reservoir is of great importance because it is widely used for recreation, aquaculture production, fishing, and irrigation. In this study, discriminant analysis, principal component analysis (PCA), factor analysis (FA) and cluster analysis (CA) were conducted to evaluate the se ...
DOI:
10.1016/j.envpol.2019.113860

40. Trophic and limnological changes in highly fragmented rivers predict the decreasing abundance of detritivorous fish

Author:
Natália Carneiro Lacerda dos Santos; Rosa Maria Dias; Diego Corrêa Alves; Brian Alvarez Ribeiro de Melo; Maria Julia Mileo Ganassin; Luiz Carlos Gomes; William Severi; Angelo Antonio Agostinho
Source:
Ecological indicators 2020 v.110 pp. 105933
ISSN:
1470-160X
Subject:
Curimatidae; Prochilodontidae; chlorophyll; dams (hydrology); detritivores; environmental indicators; fish; nitrates; nutrient retention; nutrients; nutritive value; oligotrophication; organic matter; phosphates; rivers; sediments; structural equation modeling; turbidity; Brazil
Abstract:
... The number of dams has had a significant increase in the last six decades, altering the physiography of rivers and creating systems of reservoirs in series. Therefore, it is expected that in a cascade of reservoirs, detritivorous fish will be especially affected due to the loss of nutritional quality in these regions, resulted from the high sedimentation of nutrients and organic matter. The object ...
DOI:
10.1016/j.ecolind.2019.105933

41. Unravelling the effects of large-scale ecological programs on ecological rehabilitation of China’s Three Gorges Dam

Author:
Xibao Xu; Guishan Yang; Yan Tan; Jingping Liu; Shuanghu Zhang; Brett Bryan
Source:
Journal of cleaner production 2020 v.256 pp. 120446
ISSN:
0959-6526
Subject:
ammonium nitrogen; animal reproduction; chemical oxygen demand; cropland; dams (hydrology); ecological function; ecological restoration; emissions; fish; forests; grasslands; indigenous species; infrastructure; issues and policy; pollutants; pollution control; sediments; soil erosion; spawning; terrestrial ecosystems; water pollution; water quality; water reservoirs; China; Yangtze River
Abstract:
... The Three Gorges Dam (TGD) is one of the world’s most controversial infrastructure projects due to substantial ecological issues. This study evaluates the effects of three major ecological programs – terrestrial ecosystems, water pollution prevention, and ecological operation – on ecological rehabilitation of the TGD. Extensive observed data on soil erosion, forest cover, water quality, sediment, ...
DOI:
10.1016/j.jclepro.2020.120446

42. Use of bathymetry and clay mineralogy of reservoir sediment to reconstruct the recent changes in sediment yields from a mountain catchment in the Western High Atlas region, Morocco

Author:
Abdelali Gourfi; Lahcen Daoudi; Ali Rhoujjati; Abdelfattah Benkaddour; Nathalie Fagel
Source:
Catena 2020 v.191 pp. 104560
ISSN:
0341-8162
Subject:
basins; clay; dams (hydrology); mineralogy; organic matter; particle size distribution; sediment yield; sediments; soil erosion; soil horizons; surveys; watersheds; Morocco
Abstract:
... The dam of Takerkoust, located at the outlet side of N'fis Basin (Western High Atlas of Morocco), is one of the strategic reservoirs in Morocco facing a serious problem of siltation due to soil erosion. A paleo-hydrology approach combining chronological and sedimentological analyses is conducted to understand the evolution of the depositional sediment history of the Takerkoust reservoir between 19 ...
DOI:
10.1016/j.catena.2020.104560

43. Vegetation encroachment ratios in regulated and non-regulated Mediterranean rivers (Spain): An exploratory overview

Author:
Diego García de Jalón; Vanesa Martínez-Fernández; Khosro Fazelpoor; Marta González del Tánago
Source:
Journal of hydro-environment research 2020 v.30 pp. 35-44
ISSN:
1570-6443
Subject:
dams (hydrology); hydrology; land cover; orthophotography; prediction; riparian vegetation; rivers; sediments; vegetation cover; watersheds; Spain
Abstract:
... Vegetation encroachment is an expected response of rivers to a decrease in their flow variability and flood magnitude and frequency. It frequently occurs together with channel narrowing and a decrease in braiding, both of which are likely associated with different human alterations but most frequently with river damming. Vegetation encroachment ratios display a wide range of values according to lo ...
DOI:
10.1016/j.jher.2019.11.006

44. The evolution of the Samaoding paleolandslide river blocking event at the upstream reaches of the Jinsha River, Tibetan Plateau

Author:
Yiding Bao; Shijie Zhai; Jianping Chen; Peihua Xu; Xiaohui Sun; Jiewei Zhan; Wen Zhang; Xin Zhou
Source:
Geomorphology 2020 v.351 pp. 106970
ISSN:
0169-555X
Subject:
bedrock; dams (hydrology); landforms; landslides; mathematical models; remote sensing; river flow; rivers; rockfalls; sediments; stream channels; tectonics; thermoluminescence; China
Abstract:
... A large number of landslides have occurred in the upstream reaches of the Jinsha River, Tibetan Plateau due to the intensity of tectonic movement in the area. Remote sensing and field investigation indicate that one of them, the Samaoding paleolandslide, previously blocked the river. Various river-blocking phenomena are well preserved, including the old landslide dam and deposits, fluvial sediment ...
DOI:
10.1016/j.geomorph.2019.106970

45. The formation and impact of landslide dams – State of the art

Author:
Xuanmei Fan; Anja Dufresne; Srikrishnan Siva Subramanian; Alexander Strom; Reginald Hermanns; Carlo Tacconi Stefanelli; Kenneth Hewitt; Ali P. Yunus; Stuart Dunning; Lucia Capra; Marten Geertsema; Brendan Miller; Nicola Casagli; John D. Jansen; Qiang Xu
Source:
Earth-science reviews 2020 v.203 pp. 103116
ISSN:
0012-8252
Subject:
case studies; dams (hydrology); data collection; databases; guidelines; landscapes; landslides; livelihood; longevity; mountains; probability; rivers; rockfalls; sediments; statistical analysis; topography; valleys; watersheds
Abstract:
... The blocking of river courses by mass movements is very common in mountainous areas with deep and narrow valleys. Landslide dams may pose serious threats to people and their livelihoods downstream in the case of abrupt dam failure. Since the publication of benchmark reviews of Costa and Schuster (1988) and Korup (2002), there is a growing number of studies focusing on the formation, stability, and ...
DOI:
10.1016/j.earscirev.2020.103116

46. A numerical study of pumping effects on flow velocity distributions in Mosul Dam reservoir using the HEC‐RAS model

Author:
Mohammad E. Mohammad; Nadhir Al‐Ansari; Sven Knutsson; Jan Laue
Source:
Lakes & reservoirs 2020 v.25 no.1 pp. 72-83
ISSN:
1320-5331
Subject:
basins; case studies; dams (hydrology); erosion control; lakes; model validation; models; pipes; pollution load; rivers; runoff; sediment yield; sediments; streams; valleys; water flow
Abstract:
... Water flow direction and velocity affect and controls erosion, transport and deposition of sediment in rivers, reservoirs and different hydraulic structures. One of the main structures affected is pumping stations within the dams wherein the velocity distribution near the station intake is disturbed. The two‐dimensional (2‐D) HEC‐RAS 5.01 model was utilized to study, analyse and evaluate the effec ...
DOI:
10.1111/lre.12306

47. A retrospective analysis on changes in sediment flux in the Mississippi River system: trends, driving forces, and implications

Author:
Tong Li; Shuai Wang; Yanxu Liu; Bojie Fu; Wenwu Zhao
Source:
Journal of soils and sediments 2020 v.20 no.3 pp. 1719-1729
ISSN:
1439-0108
Subject:
United States Geological Survey; dams (hydrology); pollution load; retrospective studies; risk reduction; river deltas; rivers; runoff; sediment yield; sediments; soil conservation; surveys; suspended sediment; sustainable development; water yield; watersheds; Mississippi River; Missouri River; United States
Abstract:
... PURPOSE: The Mississippi River is the largest river in the USA and one of the most regulated rivers in the world. Understanding fluvial sediment flux changes in the Mississippi River system has critical implications for future sustainable development and management strategies. MATERIALS AND METHODS: We obtained annual runoff and suspended sediment series from the United States Geological Survey (U ...
DOI:
10.1007/s11368-019-02495-0

48. Anaerobic methane-oxidizing bacterial communities in sediments of a drinking reservoir, Beijing, China

Author:
Yang Liu; Xiaoyan Wang; Yongjuan Chen; Lingrong Zhang; Kangli Xu; Yi Du
Source:
Annals of microbiology 2020 v.70 no.1 pp. 42
ISSN:
1590-4261
Subject:
ammonium nitrogen; bacteria; bacterial communities; biodiversity; carbon; community structure; dams (hydrology); drinking water; environmental factors; freshwater ecosystems; genes; methane; nitrate nitrogen; nitrates; nitrite nitrogen; nitrogen; oxidation; phylogeny; ribosomal DNA; seasonal variation; sediments; spatial variation; summer; water reservoirs; winter; China
Abstract:
... PURPOSE: Nitrate/nitrite-dependent anaerobic methane oxidation (N-DAMO) connects the global cycle of carbon and nitrogen in aquatic ecosystems. The aims of this study were to investigate the spatiotemporal variation of N-DAMO bacteria and its driving factors in a drinking reservoir which are strongly affected by human consumption. METHODS: Cloning analyses were used to study the pmoA and 16S rRNA ...
DOI:
10.1186/s13213-020-01578-5

49. Analysis and speciation of heavy metals in the water, sediments, and drinking water plant sludge of a deep and sulfate-rich Algerian reservoir

Author:
C. Amrane; K. E. Bouhidel
Source:
Environmental monitoring and assessment 2019 v.191 no.2 pp. 73
ISSN:
0167-6369
Subject:
coagulation; computer software; dams (hydrology); desalination; drinking water; drinking water treatment; heavy metals; iron; seawater; sediments; sludge; sulfate-reducing bacteria; sulfates; sulfur; turbidity; water pollution; water quality; zinc; Algeria
Abstract:
... This research work aimed to assess the water quality, speciation of heavy metals in sediments and water, and the drinking water treatment plant in an important Algerian reservoir (Timgad dam, Batna). Algeria has invested billions of dollars in large seawater desalination plants and dams; however, the water quality remains a serious issue, hence this research. The high concentration (≥ 400 mg/l) of ...
DOI:
10.1007/s10661-019-7222-9

50. Anammox response to natural and anthropogenic impacts over the Yangtze River

Author:
Liming Chen; Sitong Liu; Qian Chen; Guibing Zhu; Xuan Wu; Jiawen Wang; Xiaofei Li; Lijun Hou; Jinren Ni
Source:
Science of the total environment 2019 v.665 pp. 171-180
ISSN:
0048-9697
Subject:
anaerobic ammonium oxidation; anthropogenic activities; bacterial communities; dams (hydrology); denitrification; ecosystems; mountains; nitrogen; nitrogen cycle; rivers; sediments; spatial variation; species diversity; stable isotopes; total organic carbon; tracer techniques; Yangtze River
Abstract:
... Increasing attention has been paid to anaerobic ammonium oxidation (anammox) in river ecosystems due to their special role in the global nitrogen cycle from land to the ocean. This study have revealed the spatial patterns of anammox bacterial response to geographic characteristics and dam operation along the Yangtze River, using ¹⁵N tracers and molecular analyses of microbial communities in sedime ...
DOI:
10.1016/j.scitotenv.2019.02.096