Results 61 to 70 of about 2,677,857 (208)

A review of the development and implementation of the critical source area concept: A reflection of Andrew Sharpley's role in improving water quality

Journal of Environmental Quality, EarlyView.
Abstract Critical source areas (CSAs) are small areas of a field, farm, or catchment that account for most contaminant loss by having both a high contaminant availability and transport potential. Most work on CSAs has focused on phosphorus (P), largely through the work in the 1990s initiated by Dr.
Richard McDowell, Peter J. A. Kleinman, Philip Haygarth, Joshua M. McGrath, Douglas Smith, Louise Heathwaite, Antti Iho, Oscar Schoumans, David Nash   +8 more
wiley   +1 more source

Evaluating the relationship between hydrological extremes and groundwater in Luvuvhu River Catchment, South Africa

Journal of Hydrology: Regional Studies, 2021
Extreme hydrological events have been reported to be on an increase in terms of magnitude and frequency in southern Africa. Groundwater in this area plays a significant role in domestic water supply and agriculture.
F.I. Mathivha, M. Nkosi, M.I. Mutoti
doaj  

Climate, Land Use and Land Cover Changes in the Bandama Basin (Côte D’Ivoire, West Africa) and Incidences on Hydropower Production of the Kossou Dam

Land, 2019
Climate and land use/cover changes are potential drivers of change in hydrology and water use. Incidences of these factors on Bandama hydrological basin and Kossou hydropower generation (1981−2016) in West Africa are assessed in this present work ...
Yao Morton Kouame, Salomon Obahoundje, Arona Diedhiou, Baptiste François, Ernest Amoussou, Sandrine Anquetin, Régis Sacre Didi, Lazare Kouakou Kouassi, Vami Hermann N’guessan Bi, Emile Gneneyougo Soro, Etienne Kouakou Yao   +10 more
doaj   +1 more source

Impacts of Rainfall Variability on Streamflow in the Drylands of Northern Kenya: Assessing Water Availability under a Changing Climate

International Journal of Current Science Research and Review
Water availability is a function of climatic and land surface conditions, which determine the amount and distribution of atmospheric water as it reaches the surface.
Stephen K. Rwigi, Gilbert O. Ouma, Clinton O. Ogola, Martha Mugo, Pascalia Kaguara, Luke Olang, Justin Sheffield   +6 more
semanticscholar   +1 more source

Atrazine Ecological Monitoring Program: Two decades of generating daily or near‐daily monitoring data in highly vulnerable watersheds

Journal of Environmental Quality, EarlyView.
Abstract Surface water monitoring of pesticides ensures adherence to environmental and human health regulatory requirements. This study focuses on an unprecedented monitoring program spanning two decades with daily or near‐daily sampling across 13 states in the US Midwest and Southern United States, targeting watersheds in the upper 20th percentile of ...
Zechariah Stone, Sunmao Chen, Jennifer Trask, Sarah Terrell, Megan Cox, Nicholas Guth, Richard Brain   +6 more
wiley   +1 more source

A Multimethod Investigation of the Lake Agnes Rock Glacier, Colorado, USA

Permafrost and Periglacial Processes, Volume 36, Issue 2, Page 217-229, April/June 2025.
ABSTRACT Rock glaciers are important headwater landforms that play a key role in alpine hydrology. North American rock glaciers are estimated to contain the third largest water volume equivalent globally, and over 3800 rock glaciers have been mapped in Colorado alone. However, these features are often overlooked in alpine water budgets.
Brianna Rick, Daniel McGrath, Benjamin Lehmann, Timothy Fegel, Keith Williams, Suzanne Anderson   +5 more
wiley   +1 more source

Trends of streamflow under climate change for 26 Brazilian basins

Water Policy, 2018
Changes in the climate system and the hydrologic regime strongly affect all water uses and human activity. The main goal of this study is to evaluate the impact of rainfall pattern change on streamflow for 26 Brazilian basins with hydropower plants ...
Rafael de Oliveira Tiezzi, P. S. Barbosa, J. E. G. Lopes, Alberto Luiz Francato, R. C. Zambon, A. Silveira, P. H. B. J. Menezes, J. Isidoro   +7 more
semanticscholar   +1 more source

Does Removing Large Wood From Streams Reduce Large‐Magnitude Flood Risk? A Case Study From North Carolina, USA

River Research and Applications, Volume 41, Issue 4, Page 897-908, May 2025.
ABSTRACT Large wood (LW) removal from streams is one of the most common river channel management activities and is often undertaken with little analysis of the impacts. A primary objective of LW removal is often flood risk reduction, but reports of actual flood reduction benefits have varied widely and were often anecdotal in nature.
J. Jack Kurki‐Fox, Barbara A. Doll
wiley   +1 more source

The dynamical foundation of fractal stream chemistry: The origin of extremely long retention times [PDF]

, 2002
We present a physical model to explain the behavior of long-term, time series measurements of chloride, a natural passive tracer, in rainfall and runoff in catchments [Kirchner et al., Nature 403(524), 2000]. A spectral analysis of the data shows the chloride concentrations in rainfall to have a white noise spectrum, while in streamflow, the spectrum ...
arxiv   +1 more source

Long-range properties and data validity for hydrogeological time series: the case of the Paglia river [PDF]

Physica A 470 (2017) 39-50, 2016
This paper explores a large collection of about 377,000 observations, spanning more than 20 years with a frequency of 30 minutes, of the streamflow of the Paglia river, in central Italy. We analyze the long-term persistence properties of the series by computing the Hurst exponent, not only in its original form but also under an evolutionary point of ...
arxiv   +1 more source