Articles tagged with Water Management
A SUTD study has uncovered the reservoir filling strategies and operating rules of China's big hydropower dams on the Lancang-Mekong river. The data shows that dam operations remained steady during a severe drought, indicating no need for emergency releases to mitigate its impact.
A new study has identified 100 crucial global water questions facing the planet today, including water scarcity, sanitation, and climate dynamics. The research emphasizes the need for concerted efforts in interdisciplinary research and action to address the consequences of human governance failure on water resources.
A multidisciplinary project aims to develop a decision-making tool to estimate the risk of water contamination in flooded areas. The research team will collect public data and conduct field work to test their approach in small study areas, ultimately enabling Québec to reduce health risks by better protecting water quality.
Researchers at North Carolina State University found that soils in the Walnut Creek watershed can absorb over 99% of precipitation events, contradicting previous studies. The study suggests that urban planners address flooding problems by considering the amount and location of paved surfaces rather than soil composition.
The Mekong Delta in Vietnam could be almost completely submerged by sea water by the end of the century if urgent action is not taken. A Politecnico di Milano study identified six measures to increase the survival of the delta, including regulating sediment extraction and implementing natural coastal protection solutions.
A new study provides a framework for predicting snowpack runoff and its impact on flood risk during rain-on-snow events. By leveraging hourly data from existing snow monitoring stations, researchers have created a decision support tool that can help water managers prepare for potential flooding.
Scientists developed a method to estimate summer rainfall in the Southwest months in advance, performing well in Arizona. By analyzing lower atmosphere moisture, they created monthly forecasts to aid reservoir storage and water allocation decisions.
The study found that stream gauges are disproportionately located in large rivers and human-occupied watersheds, but sparsely distributed in protected areas and non-perennial rivers. This is critical information for freshwater conservation and water security concerns.
Researchers developed an interdisciplinary resilience framework to understand the connection between social and water systems in communities like the Choyeros. The framework explores how social systems impact water supply resilience and vice versa, providing a tool to generate conversations and coordinate responses.
A new study shows substantial increases in atmospheric thirst across the US Southwest, with warming temperatures accounting for 57% of the changes observed. The largest changes are centered over the Rio Grande region, where crops now require more water and can be expected to require even more in the future.
Researchers at Flinders University discovered that stormwater interception and infiltration using the TREENET Inlet enhances white cedar tree growth, with saplings growing 65% more in height and 60% more in diameter. The study found increased water uptake and photosynthesis rates for trees receiving harvested stormwater.
Researchers have developed a model to predict Vibrio vulnificus abundance in the canal by analyzing rainfall, water temperature, dissolved nutrients and organic matter. The study found that warmer waters due to climate change may lead to an increase of twice or three times current levels of bacteria by the end of the century.
Groundwater supplies half of world's drinking water and is vital to agriculture and industry; poor management threatens global water security. A study in Australia highlights the benefits of collective action in groundwater management.
Researchers found that big trees provide a doughnut-shaped zone surrounding them where snowpack can endure, benefiting forests with sparse precipitation. The study suggests conserving healthy and large tree species can help retain snow on the ground.
A study of 2,272 streams in North America found that human-altered streams are at greater risk of severe flooding due to increased paved surfaces. Human activities also lead to water shortages and biodiversity loss in these streams.
A study from the University of California, Davis, found that reducing leaks in urban water systems can be a highly effective and cost-competitive method for saving water. The research suggests that leak reduction is the most cost-effective tool in an urban water manager's toolkit, with estimated savings of $277 per acre-foot.
A study led by the University of Texas at Austin found that groundwater levels in Sub-Saharan Africa frequently increased over time, with most aquifers replenishing their water supply during rainy periods. The research tracked long-term water storage gains and losses across Africa's major aquifers using NASA's GRACE satellites.
According to a new EPFL study, Swiss rivers are at risk of overheating by the end of the century. If greenhouse gas emissions are reduced, river temperatures may only rise by 1°C and discharge decreases by 5% in mountain catchments. Inaction could lead to extreme consequences, including glacier loss and decreased biodiversity.
A recent global study found that more than a quarter of the world's rivers had pharmaceutical concentrations at potentially toxic levels. The study, which included data from over 258 rivers across seven continents, also revealed concurrent contamination by multiple classes of pharmaceuticals.
A new study suggests that China's pursuit of carbon neutrality could lead to significant water savings, with 24% of industrial water use expected to be saved by 2060. However, some provinces may struggle to meet their water-use targets, and coordinated climate-water strategies are needed to address these challenges.
A new study from the University of Waterloo provides a roadmap for faster improvements in water quality by tackling nitrogen legacies. The research recommends six steps to address this critical issue, which has persisted for decades due to excess nitrogen fertilizers.
This book provides a fundamental understanding of the physical, biological, and chemical processes governing fine sediment transport in open water. It covers various spatial and temporal scales, from micro-scale to system-wide, and discusses interactions between disciplines such as hydrodynamics and soft soil mechanics.
Native marine macroalgae thrive in environments created by natural groundwater seeps, benefiting from enhanced nutrients despite lowered salinity levels. In contrast, tainted groundwater seeps support invasive species, threatening native algal dominance.
Marine heat waves in the Chesapeake Bay are projected to increase by half a year by 2100, causing devastating impacts on marine life and coastal economies. The study found a significant upward trend in frequency and intensity of marine heat waves within the Bay.
A new study found that manufacturing facilities that use large amounts of water during periods of drought often streamline their processes to lower toxic emissions into water, lakes, and rivers. On average, these changes resulted in reduced toxic emissions by over 2.5%.
A nationwide analysis of 20 US cities found that many plans fail to explicitly define green infrastructure, with a narrow focus on stormwater management. The study suggests that this narrow view can limit project funding and cause cities to miss out on vital social and ecological services.
Researchers developed a tool to monitor and predict water losses in waterfalls based on their soundscapes, allowing environmental managers to balance water diversion and preservation. The study highlights the importance of maintaining a minimum threshold of water flow for waterfall appearance and sound.
A new study warns that California's Central Valley groundwater may be unable to recover from past and future droughts, with less than a third recovered after the 2012-2016 drought. The researchers found that groundwater recovery times can be halved with modest caps on pumping in drought and post-drought years.
Researchers found that individual urban trees, such as street trees, can capture and store rainfall at a rate of three times that of clusters or patches. The study used sap flux sensors to monitor transpiration rates in 18 mature red maple trees, revealing significantly higher transpiration rates in single trees compared to cluster trees.
Researchers emphasize the need for monitoring drinking water for HIV medications, as they can contaminate rivers and streams through wastewater. The lack of regulation on pharmaceuticals in wastewater treatment plants poses a significant challenge in ensuring safe drinking water.
A Mediterranean region study predicts increased crop water demands due to worsening climate conditions, affecting staple crops like maize and wheat. The findings highlight the need for precision agriculture and water management strategies to balance economic growth and environmental sustainability.
Researchers found that bacterial communities in streams adjacent to young secondary forests recover to resemble those of mature forest streams within a decade after cattle is removed from the land. This study provides hope for restoring water quality through passive reforestation, which can be crucial for human health and the environment.
Plant pathologists have developed a set of Nursery Phytophthora Best Management Practices to eradicate the harmful organisms from nursery stock. Through testing and accreditation programs, nurseries that comply with the guidelines have shown no detectable Phytophthora infection in their stock, enabling habitat restoration plantings.
A new project led by Cornell University's Flavio Lehner will improve climate models to reduce uncertainty in future water projections. The research aims to assess the sensitivity of models to changing environmental factors, such as temperature and greenhouse gases.
Invasive fish and crustaceans significantly reduce lake organism abundance, degrading water quality. Researchers provide guidance on managing waterbodies to prevent ecosystem collapse.
Groundwater recovery time varies by region and human activity, with some areas taking up to 15 years to recharge. Excessive pumping can cause land subsidence, contaminant mobilization, and decreased water quality.
A groundwater market in California's Mojave desert stabilizes resources and increases property values by 200%, generating a net benefit of at least $400 million. The cap-and-trade system enables water to be used more productively while compensating original owners.
A new study suggests that keeping reservoir levels low during droughts can exacerbate the problem and contribute to Brazil's current water and energy crisis. Storing more water in reservoirs could increase precipitation and river flow, alleviating the crisis.
The Center for Research on Programmable Plant Systems (CROPPS) aims to integrate plant sciences, engineering, and computer science to improve crop efficiency and sustainability. Researchers will engineer plants that can detect environmental changes and respond to digital signals, leading to more efficient water and nutrient delivery.
A new five-year research project led by Thomas Neeson aims to model the impacts of conservation incentives on farmers in the Red River basin. The study will help understand how voluntary, incentive-based conservation programs can be effectively designed to promote sustainable water use.
A WVU-led research team will test the potential of geothermal energy by drilling three miles into the ground. The project aims to reduce carbon footprint and decrease energy costs for the university, with potential implications for industries across West Virginia.
Researchers at the University of Texas at Austin tracked water storage in 14 major US aquifers over 15 years, finding that irrigation habits can be managed more effectively in humid regions. The study highlights the importance of surface water in replenishing groundwater, which helps dampen the impacts of irrigation.
Research in the southern Murray-Darling Basin has found a downward spiral in water availability, driven by accelerated changes in climate. Since the 1990s, cool season rainfall and river heights have significantly decreased due to increased evaporation and changed precipitation patterns.
A new study develops a machine learning method that incorporates physical world rules to make more accurate environmental predictions, particularly in river temperature prediction. The model can handle sparse data and generalize well across different time periods.
Research suggests that more efficient water management, technology, and infrastructure can help achieve development goals in the world's drylands. This study concludes that coherent system-oriented policies and institutions are necessary to support climate change adaptation efforts.
The Mains to Rains website aims to reduce water dependence in gardens by providing tips on saving water such as installing water butts and mulch. The site is part of a KTP between Cranfield and the RHS to promote improved water management practices.
Researchers analyzed satellite imagery and groundwater data from 2015-2020, finding that current practices threaten riparian ecosystems' long-term survival. The study suggests a need for revised water management strategies to mitigate water stress and preserve these critical environments.
Researchers at Cornell University developed a minimally invasive method to measure water potential in leaves using nanoscale sensors and fiber optics. This technology enables the study of basic plant biology, advances breeding more drought-resistant crops.
Research identifies two critical thresholds for stream flow and salmon survival, with a historic mean flow of 10,712 cfs providing an important target for managing water resources. Enacting flows to match this threshold could increase salmon survival rates by doubling or tripling in some years.
Researchers studied the 426-kilometer-long Aqueduct of Valens and found that it was cleaned of carbonate deposits just a few decades before abandonment. The double-construction system over 50 kilometers likely enabled constant operation for maintenance, highlighting the ingenuity of ancient engineers.
A joint research study by SFU and the Pacific Water Research Centre highlights the need for certified, nature-based solutions to protect salmon habitats in the Lower Mainland. Adopting urban development policies and certifications can advance progressive land and water management.
According to a new study, nearly 20% of groundwater wells globally are at risk of drying up if groundwater levels decline. This is largely due to increasing demand and inadequate governance or management, putting critical vulnerabilities to even modest reductions in groundwater levels.
A new Stanford-led study develops a framework to calculate future floodwater volumes under climate change, identifying areas for infrastructure investments in California's aging water infrastructure. The tool aims to maximize groundwater recharge, reducing drought risks and building water reserves, while also mitigating flood risks.
The Bureau of Reclamation released final technical reports supporting the Water Reliability in the West - 2021 SECURE Water Act Report, assessing climate change impacts on 17 western states. The reports provide detailed information on adaptation strategies to increase water supply reliability.
A recent study by ETH Zurich reveals that climate change has a globally visible influence on rivers, with complex patterns emerging worldwide. The research analyzed data from 7,250 measuring stations and found that river flow changed systematically between 1971 and 2010.
A new study reveals that bioenergy production without sustainable irrigation management could double global water stress by the end of the century. However, implementing sustainable water management measures can halve this increase, but poses significant tradeoffs and challenges.
Analysis of satellite data reveals that humans have a dominant effect on Earth's water cycle, causing 57% of seasonal variability in freshwater storage. Human-managed reservoirs fluctuate by nearly four times more than natural lakes and ponds, affecting regions with high water stress.
Scientists used ICESat-2 to track water level fluctuations in Earth's lakes and ponds over 22 months, finding natural lakes and ponds change by 8.6 inches seasonally, while reservoirs fluctuate nearly quadruple that amount. The study also revealed regional patterns of variability in reservoirs.
The invasive Prosopis juliflora tree seriously diminishes water resources in the Afar Region of Ethiopia, consuming up to 3.1-3.3 billion m3/yr and generating US$ 320 million and US$ 470 million net benefits per year. The study highlights the need for a coordinated control program to contain its spread and reduce density.
Researchers from Skoltech and UTMB have developed an optoacoustic sensor to measure water content in skin, a technique that can monitor swelling or dehydration. The method is safe, non-invasive, and provides high resolution, making it suitable for clinical applications.