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... In April 2000 a large-scale rock avalanche dammed the Yigong Zangpo River, forming an extensive rockslide-dammed lake. The impoundment lasted for 62days before a catastrophic breaching caused a massive outburst flood in the Yarlung Zangpo (Tibet) and the Dihang rivers (India) that travelled downstream to the main floodplain of the Brahmaputra in northeastern India. In response to discrepancies in ...
climatic factors; dams (hydrology); floods; infrastructure; insurance; land use planning; rain; risk; risk management; rivers; state government; streams; water supply; watersheds; Queensland
Abstract:
... On 13th January 2011 major flooding occurred throughout most of the Brisbane River catchment, most severely in Toowoomba and the Lockyer Creek catchment (where 23 people drowned), the Bremer River catchment and in Brisbane, the state capital of Queensland. Some 56,200 claims have been received by insurers with payouts totalling $2.55 billion. This paper backgrounds weather and climatic factors imp ...
... In late June 2013, heavy rainfall and rapidly melting alpine snow triggered flooding throughout much of the southern half of Alberta. Heavy rainfall commenced on 19 June and continued for 3 days. When the event was over, more than 200 mm and as much as 350 mm of precipitation had fallen over the Front Ranges of the Canadian Rocky Mountains. Tributaries to the Bow River including the Ghost, Kananas ...
Salmo trutta; dams (hydrology); fish communities; freshwater ecosystems; habitats; humans; rivers; spawning; surveys; trout; vegetation; water flow; Denmark
Abstract:
... Humans and freshwater ecosystems have a long history of cohabitation. Today, nearly all major rivers of the world have an in-stream structure which changes water flow, substrate composition, vegetation, and fish assemblage composition. The realization of these effects and their subsequent impacts on population sustainability and conservation has led to a collective effort aimed to find ways to mit ...
... 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 ...
adverse effects; algorithms; dams (hydrology); economic development; environmental degradation; issues and policy; livelihood; rivers; simulation models; total dissolved solids; water quality; water storage; water supply; watersheds; Iran
Abstract:
... The Meimeh dam construction is a project, planned to provide sustainable livelihoods, social, and economic developments in the Meimeh River Basin, Ilam, Iran. However, due to the high concentration of TDS in the Meimeh River and its tributaries, river impoundment and water storage can be harmful to the Meimeh Reservoir. The upstream inflow control and the reservoir operation management in a select ...
dams (hydrology); developmental stages; fisheries; floodplains; freshwater fish; habitats; infrastructure; irrigation; migratory behavior; rivers; water power; weirs; Indonesia
Abstract:
... Development activities threaten the long-term sustainability of tropical floodplain systems. The construction of dams, weirs, irrigation infrastructure and regulators affect connectivity among habitats and can facilitate rapid declines in riverine biota, especially fish. Indonesia is a tropical island country with an abundance of monsoonal rivers. Massive expansions in hydropower and irrigation in ...
... Many glacier dams on major rivers at the southeastern edge of the Tibetan Plateau had been previously determined through remote sensing and glacier terminal position calculation. It was hypothesized that such damming substantially impeded river incision into the plateau interior. Investigation on the large glacial-dammed lake at the entrance of Tsangpo gorge is critical for understanding this hypo ...
... In order to evaluate the recurrence of toxic cyanobacterial blooms and to determine the survival capabilities of the resistance cells through time, a sedimentary core spanning 6700 years was drilled in the eutrophic Lake Aydat. A multiproxy approach (density, magnetic susceptibility, XRF, pollen and non-pollen palynomorph analyses), was used initially to determine the sedimentation model and the l ...
... Spatial and temporal distribution of anadromous alewife (Alosa pseudoharengus Wilson) spawning and nursery habitats were determined by sampling in the Mullica River – Great Bay watershed (New Jersey, USA) in a combination of long- and short-term observational and quantitative studies. Reproduction was confirmed by examination of developing gonads, visual observations of spawning, and egg collectio ...
Bacillariophyceae; Cyclotella; algae; algal blooms; dams (hydrology); dominant species; drinking water; eutrophication; meteorological data; phosphorus; rivers; total phosphorus; water quality
Abstract:
... Eutrophication with the sustained occurrence of harmful algal blooms (HABs) has been widely recognized since the 1990s as one of the largest drinking water quality issues in the middle and lower reaches of the Han River (MLHR, the largest tributary of Yangtze). Due to impoundment of the middle route of the South to North Water Diversion Project (SNWDP), the height of the Danjiangkou Reservoir Dam ...
basins; dams (hydrology); models; power generation; research; river flow; rivers; water; water power; watersheds; Amazon River; Brazil
Abstract:
... Hydropower dams have received increased global attention due to their detrimental socioenvironmental ramifications. Such attention has led to an increase in studies on the impacts of reservoir operation on river flow; however, a holistic understanding of the compounded effects of hydropower dams on different hydrological characteristics is lacking, especially for large river basins such as the Ama ...
barges; basins; dams (hydrology); laws and regulations; rivers; soybeans; waterways; Amazon River; Brazil
Abstract:
... Brazil plans to build 43 “large” dams (>30 MW) in the Tapajós Basin, ten of which are priorities for completion by 2022. Impacts include flooding indigenous lands and conservation units. The Tapajós River and two tributaries (the Juruena and Teles Pires Rivers) are also the focus of plans for waterways to transport soybeans from Mato Grosso to ports on the Amazon River. Dams would allow barges to ...
... Matching the trend seen among the major large rivers of the globe, the Amazon River and its tributaries are facing aquatic ecosystem disruption that is affecting freshwater habitats and their associated biodiversity, including trends for decline in fishery resources. The Amazon’s aquatic ecosystems, linked natural resources, and human communities that depend on them are increasingly at risk from a ...
Podocnemis; biodiversity; dams (hydrology); dry season; experimental design; habitats; humans; rivers; turtles; water power
Abstract:
... Hydropower dams are associated with adverse impacts on biodiversity, yet there remains a lack of robust scientific evidence documenting the magnitude of these impacts, particularly across highly biodiverse tropical waterways. Aquatic and semi‐aquatic vertebrates are disproportionately affected by human changes to aquatic environments and hydropower expansion is an increasing threat to the Endanger ...
... —Data based on the results of published, unpublished, and questionable materials concerning the occurrence of anadromous sturgeons after damming of the Don River downstream and upstream of the Tsimlyansk hydroengineering complex are presented. Two peaks of approaches of spawners to the dam in the 1950s and 1980s were recorded. The first peak was related to the wild population that existed in these ...
case studies; dams (hydrology); deformation; geophysics; infrastructure; interferometry; lakes; landslides; remote sensing; rivers; standard deviation; synthetic aperture radar; time series analysis; villages; Pakistan
Abstract:
... From a geological standpoint, northern Pakistan is one of the most active and unstable areas in the world. As a consequence, many massive landslides have occurred in the area in historical times that have destroyed infrastructure, blocked the Hunza River, and damaged the Karakoram Highway repeatedly. However, despite the high frequency of large magnitude landslide events, and the consequent damage ...
... Management of water resources in basins under Mediterranean climate is based on t e knowledge of the complex interaction among rainfall, evapotranspira ion, streamflow discharge, and changes in water storage. Understanding the spatial and temporal evolution of such relations is a key issue for obtaining reliable applications of hydrologica models. In this study we identified the water dynamics inv ...
United States Geological Survey; carbon cycle; cropland; dams (hydrology); dissolved organic carbon; environmental factors; forests; phosphorus; rivers; sand fraction; shrublands; soil organic matter; soil water; soil water content; standard deviation; streams; surface water; uncertainty; urban areas; watersheds; Mississippi River; Southeastern United States; Western United States
Abstract:
... Analyses of environmental controls on riverine carbon fluxes are critical for improved understanding of the mechanisms regulating carbon cycling along the terrestrial-aquatic continuum. Here, we compile and analyze riverine dissolved organic carbon (DOC) concentration data from 1402 United States Geological Survey (USGS) gauge stations to examine the spatial variability and environmental controls ...
... In August 1975, an extraordinary storm hit the Hongru River basin in Henan Province, China. Two dams were overtopped, breached and totally destroyed and the river basin experienced a severe flood. Various methods for assessing the return period of the peak discharges and changes in hydrological response due to the dambreak have been investigated: Annual Maximum Series (AMS), Partial Duration Serie ...
dams (hydrology); livelihood; rivers; stream flow; watersheds; wetlands; Bangladesh; India
Abstract:
... The Tangon river (267 km long), of India and Bangladesh, is highly affected by the construction of the dam (1989) at 10 km west of Boda in Panchgarh district, Bangladesh. The aim of the current work is to find out the impacts of flow change on hydrological and ecological components in the Tangon river and riparian wetlands using indicators of hydrologic alteration (IHA). Estimation of threshold fl ...
dams (hydrology); infrastructure; lakes; land use planning; morphometry; rivers; topographic slope; watersheds; Argentina
Abstract:
... Around 11.5∗10⁶m³ of rock detached from the eastern slope of the Santa Cruz valley (San Juan province, Argentina) in the first fortnight of January 2005. The rockslide–debris avalanche blocked the course, resulting in the development of a lake with maximum length of around 3.5km. The increase in the inflow rate from 47,000–74,000m³/d between April and October to 304,000m³/d between late October an ...
cities; computer software; dams (hydrology); hydrologic models; rivers; sediment transport; water flow; Russia
Abstract:
... Water flow and sediment transport under the effect of hydrotechnical constructions on the Amur River near Blagoveshchensk and Heihe cities was analyzed based on two-dimensional hydrodynamic modeling using STREAM_2D software (the authors V. Belikov et al., Russia). Three modeling scenarios were considered: without constructions, with the embankment of Blagoveshchensk, with the embankment of Blagove ...
atmospheric precipitation; dams (hydrology); eutrophication; land use; nitrates; nitrites; rivers; runoff; summer; vegetation; water quality; water storage; winter
Abstract:
... The paper presents characteristics of six selected retention reservoirs located in the Wielkopolskie province, i.e. the Radzyny and Przebędowo reservoirs located near the city of Poznań, the Miedzichowo reservoir situated at the western border of the province, as well as the Stare Miasto and Jutrosin and Pakosław reservoirs, situated at the eastern and southern parts of the province, respectively. ...
Soil and Water Assessment Tool model; aquifers; base flow; basins; dams (hydrology); dry season; evapotranspiration; groundwater; groundwater flow; groundwater recharge; health effects assessments; rivers; soil water; surface water; water analysis; water budget; water table; watersheds; weirs; wet season; South Korea
Abstract:
... The water balance and groundwater dynamics due to surface–groundwater interactions for watershed health assessment were investigated for the Han River basin (34,148 km²) of South Korea using the Soil and Water Assessment Tool (SWAT). The model was established considering 4 multipurpose dams and 3 multifunction weirs. The SWAT was spatially calibrated and validated using daily observed inflows for ...
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 ...
... The purpose of this study is to obtain a spatially explicit assessment of the impact of reservoirs on natural river sediment fluxes to the sea in the Mediterranean Maghreb Basin (MMB), a region where both mechanical erosion rates and the anthropogenic pressure on surface water resources are high. We combined modeling of riverine sediment yields (sediment fluxes divided by the drainage basin area) ...
... The expected geomorphic after-effects of the Mw 9.0 Tōhoku-oki earthquake of 11 March 2011 (eastern Japan) are summarized by a schematic model of seismic driving, which details seismogenic disturbances to sediment systems that affect the rate or timing of sediment delivery to coastlines over timescales of 10²–10⁴years. The immediate physical environmental responses to this high-magnitude earthquak ...
anthropogenic activities; carbon; climate change; dams (hydrology); forests; lakes; nitrogen; nitrogen content; nutrients; organic matter; phosphorus; primary productivity; rivers; sediments; stable isotopes; urbanization; water treatment; watersheds; Lake Superior
Abstract:
... The sediments of western Lake Superior hold a record of environmental changes that have accompanied the settlement and urbanization of the surrounding watershed. Organic carbon concentrations are low (1.5%) with little variation in stable isotope composition (−26.5±0.5‰) prior to 1900. Organic carbon and nitrogen concentrations begin to rise after 1900, as increased anthropogenic disturbance led t ...
anthropogenic stressors; dams (hydrology); data collection; extinction; fish; habitat fragmentation; homogenization; humans; introduced species; riverine habitat; rivers; stream flow; watersheds; United States; Western European region
Abstract:
... Human activities are often implicated in the contemporary extinction of contemporary species. Concerning riverine fishes, the major biotic and abiotic threats widely cited include introduction of non-native species, habitat fragmentation and homogenization in stream flow dynamics due to the damming of rivers, dumping of organic loadings, degradation of the riverine habitat by agricultural practice ...
... The response of floodplain wetlands to changes in river hydrology caused by different dam operation strategies in arid regions has attracted worldwide attention in recent decades. However, less is known about quantifying the effects of dam operations on wetlands in different lateral zones located in low-gradient floodplains in arid regions using remote sensing and hydrological time series. In this ...
dams (hydrology); data collection; model validation; neural networks; rain; rivers; watersheds; Vietnam
Abstract:
... Flood forecasting is an essential requirement in integrated water resource management. This paper suggests a Long Short-Term Memory (LSTM) neural network model for flood forecasting, where the daily discharge and rainfall were used as input data. Moreover, characteristics of the data sets which may influence the model performance were also of interest. As a result, the Da River basin in Vietnam wa ...
... River systems have been altered worldwide by dams and diversions, resulting in a broad array of environmental impacts. The use of a process-based, hierarchical framework for assessing environmental impacts of dams is explored here in terms of a case study of the Kootenai River, western North America. The goal of the case study is to isolate and quantify the relative effects of multiple dams and ot ...
algorithms; dams (hydrology); equations; hydrologic data; mathematical models; prototypes; rivers; transient flow; water power; waterways; China; Yangtze River
Abstract:
... In engineering practice, the unsteady flows generated from the operation of hydropower station in the upstream region could significantly change the navigation system of waterways located in the middle-lower reaches of the river. In order to study the complex propagation, convergence and superposition characteristics of unsteady flows in a long channel with flow confluence, a numerical model based ...
... AIM: To determine whether reintroduced beavers, as an example of native herbivorous megafauna, can increase freshwater biodiversity at the landscape scale and to compare effects on two contrasting taxonomic groups. LOCATION: South‐central Sweden. METHODS: We collected data on plant and water beetle composition and supporting environmental variables from 20 closely located wetlands, half created fr ...
... The basin of the River Arno is a flood-prone area where flooding events have caused damage valued at more than 100 billion euro in the last 40 years. At present, the occurrence of an event similar to the 1966 flood of Firenze (Florence) would result in damage costing over 15.5 billion euro. Therefore, the use of flood forecasting and early warning systems is mandatory to reduce the economic losses ...
... Fish, especially migratory species, are assumed to benefit from dam removals that restore connectivity and access to upstream habitat, but few studies have evaluated this assumption. Therefore, we assessed the movement of migratory fishes in the springs of 2008 through 2010 and surveyed available habitat in the Little River, North Carolina, a tributary to the Neuse River, after three complete dam ...
... Deltaic systems are sensitive to natural and human-induced changes as they accommodate numerous activities and have high ecological, economic and social importance. Mediterranean deltas are particularly vulnerable to anthropogenic activities, which alter the coastal land availability. This work addresses the morphological evolution of the Guadalfeo River delta (southern Spain) by analyzing the evo ...
... The temporal shoreline position is a key indicator of coastal development and provides information on beach dynamics. Previous studies have indicated that there is a strong relationship between riverine sediment fluxes and beach volume. As such, worldwide hydroelectric projects and the associated damming infrastructure have decreased suspended sediment loads, and consequently increasing coastal er ...
Molinia; basins; dams (hydrology); data collection; digital elevation models; eutrophication; ex ante analysis; fens; groundwater; groundwater flow; hydrodynamics; lakes; meadows; model validation; nutrient transport; peat soils; rivers; soil habitats; surface water; water table; weirs; Poland
Abstract:
... A multi-model-based study was performed in order to unravel valuable fen meadow habitats' possible exposure to eutrophication, which is expected to occur as a result of the re-saturation of degraded peat soils. The framework was tested in a 3000-ha fen-drain system to be restored in the Middle Biebrza Basin (northeast Poland), where the datasets and related models were used to delineate prospectiv ...
altitude; case studies; dams (hydrology); ecological restoration; ecological value; ecosystems; forests; geographic information systems; habitats; land cover; natural resources conservation; rivers; surveys; topographic slope; tree age; wildlife; South Korea
Abstract:
... The main objective of this study was to investigate ecologically healthy regions near a dam reservoir. This study developed a model for assessing habitat suitability as a proxy for the ecological value of reservoirs. Three main factors comprising nine assessment variables were selected and classified as having a habitat suitability (HS) between 0 and 1: (1) geomorphic factors of altitude, slope st ...
dams (hydrology); drinking water; floodplains; humans; irrigation; issues and policy; remote sensing; rivers; roads; sediments; topographic maps; urbanization; water power; water supply; India
Abstract:
... Ongoing demands for irrigation, drinking water supplies and hydropower generation encourage human beings to construct dams and reservoirs on rivers. Such engineering structures together with embankments may protect downstream areas from flooding, can give short-term benefits but may degrade the natural or pristine condition of a river by altering the longitudinal and lateral connectivity of water ...
Soil and Water Assessment Tool model; climate change; dams (hydrology); lakes; pollution load; rain; rivers; sediment deposition; sediment yield; sediments; soil science; surveys; water power; watersheds; Greece
Abstract:
... Acheloos is the second longest and the largest, in terms of discharge, native river in Greece, supplying three hydroelectric dams along its route. The Kremasta dam, which forms the largest artificial lake in Greece, is the first dam fed by Acheloos and two other rivers. Sediment accumulation in such large reservoirs is of major concern, as it reduces storage capacity and hydropower production. In ...
... In deltaic areas, riverine and coastal waters interact; hence, these highly dynamic environments are particularly sensitive to climate change. This adds to existing anthropogenic pressures from irrigated agriculture, industrial infrastructure, urbanization, and touristic activities. The paper investigates the estimated future variations in the dynamics of surface and coastal water resources at a M ...
... The downstream effects of hydroelectric dam operations on the abundance and diversity of the macroinvertebrate drift community of a regulated river were compared to that of an unregulated river, longitudinally and across three seasons. The regulated river operated under minimum flow and ramping rate (rate of change of flow) restrictions resulting in a ‘modified peaking' regime, which means the fac ...
... Riparian and deltaic areas exhibit a high biodiversity and offer a number of ecosystem services but are often degraded by human activities. Dams, for example, alter the hydrologic and sediment regimes of rivers and can negatively affect riparian areas and deltas. In order to sustainably manage these ecosystems, it is, therefore, essential to assess and monitor the impacts of dams. To this end, sit ...
United States Army Corps of Engineers; dams (hydrology); hydrograph; hydrologic models; inventories; monitoring; rivers; standard deviation; time series analysis; Mississippi; Mississippi River; Missouri
Abstract:
... The impacts of dams and levees on the long-term (>130 years) discharge record was assessed along a ~1200 km segment of the Mississippi River between St. Louis, Missouri, and Vicksburg, Mississippi. To aid in our evaluation of dam impacts, we used data from the U.S. National Inventory of Dams to calculate the rate of reservoir expansion at five long-term hydrologic monitoring stations along the stu ...
rivers; dams (hydrology); environmental impact; environmental assessment; hydrogeology; water quality; sediment deposition; plant ecology; animal ecology; environmental policy; China
Abstract:
... The need to understand and minimize negative environmental outcomes associated with large dams has both contributed to and benefited from the introduction and subsequent improvements in the Environmental Impact Assessment (EIA) process. However, several limitations in the EIA process remain, including those associated with the uncertainty and significance of impact projections. These limitations a ...
... The Río de la Plata estuary drains the second largest river basin of South America. The occurrence of frequent cyanobacterial blooms of the Microcystis and Dolichospermum complex in the Uruguayan coast are associated with high flows of Uruguay River due to rainy years. In summer 2019, a massive cyanobacterial bloom reached up to the Uruguayan Atlantic coast. This study seeks to unveil the origin a ...
Bacillariophyceae; aquatic plants; dams (hydrology); ecological invasion; ecosystems; floodplains; flora; invasive species; land clearing; land use change; pastoralism; river flow; river regulation; rivers; sediments; watersheds; wetlands; Australia; Great Barrier Reef
Abstract:
... The Burdekin River floodplain wetlands are internationally important and act as a sink for sediments and nutrients that would otherwise enter the World Heritage‐listed Great Barrier Reef lagoon. The Burdekin River has the highest natural discharge of any Great Barrier Reef catchment and contributes the greatest mass of sediment to the reef. The river and its catchment have been substantially modif ...