Discrete zones of groundwater discharge in a stream within peat‐dominated wetland were identified on the basis variations streambed temperature using distributed sensor (DTS). The DTS gives measurements spatial (±1 m) and temporal (15 min) variation over much larger reach (>800 than previous methods. Isolated anomalies observed along correspond to focused likely caused by soil pipes peat. also recorded number anomalies, where higher numbers correlated well with gaining gauging. Focused...

Spatially and temporally distributed measurements of processes, such as baseflow at the watershed scale, come substantial equipment personnel cost. Research presented here focuses on building a crowdsourced database inexpensive stream stage measurements. Signs staff gauges encourage citizen scientists to voluntarily send hydrologic (e.g., stage) via text message server that stores displays data web. Based stage, we evaluate accuracy scientist measurement approach. The results show collection...

Mountain meadows are groundwater‐dependent ecosystems that hot spots of biodiversity and productivity. In the Sierra Nevada mountains California, these rely on shallow groundwater to support their vegetation communities during dry summer growing season in region's Mediterranean montane climate. Vegetation composition this environment is influenced by both (1) oxygen stress occurs when portions root zone saturated anaerobic conditions limit respiration (2) water table drops becomes limited. A...

Abstract The relative roles of dynamic hydrologic forcing and geomorphology as controls on the timescales magnitudes stream‐aquifer exchange hyporheic flow paths are unknown but required for management stream corridors. We developed a comprehensive framework relating diel fluctuations to in absence geomorphic complexity. simulated groundwater through an aquifer bounded by straight hillslope under time‐varying boundary conditions. found that can produce path lengths residence times span...

The Salar del Huasco is an undeveloped basin in the arid Chilean Altiplano. This study aims to investigate potential impacts of climate change on aquifer better manage groundwater resources With this purpose, precipitation and temperature projections from multiple general circulation models were statistically downscaled using hybrid delta approach produce ensemble scenarios. Groundwater recharge was estimated for each scenario based a rainfall-runoff model that used drive numerical model,...

The typical stratigraphy of riparian ecosystems consists fine‐grained overbank deposits overlying coarser‐grained materials. Plants within these regions rely on soil moisture in the sediments as well supplemental groundwater for root water uptake. additional available a result shallow table conditions is defined here subsidy and found to be significant contribution Work presented quantifies effect uptake variations thickness upper sediments, rate decline, maximum depth. Variations decline...

Abstract We investigated, through hydrologic modelling, the impact of extent and density canopy cover on streamflow timing magnitude peak late summer flows in upper Tuolumne basin (2600–4000 m) Sierra Nevada, California, under current warmer temperatures. used Distributed Hydrology Soil Vegetation Model for modelling basin, assuming four vegetation scenarios: forest (partial cover, 80% density), all (uniform coverage, barren (no forest) thinned 40% density) a medium‐high emissions scenario...

Abstract The volume of the water stored in and exchanged with hyporheic zone is an important factor stream metabolism biogeochemical cycling. Previous studies have identified groundwater direction magnitude as one key control on zone, suggesting that fluctuation riparian table could induce large changes under certain seasonal conditions. In this study, we analyze transient drivers by coupling Brinkman‐Darcy equation to Navier‐Stokes equations simulate annual storm induced fluctuations....

Citizen science-based approaches to monitor the natural environment tend be bimodal in maturity. Older and established studies such as Audubon's Christmas bird count Community Collaborative Rain, Hail Snow Network (CoCoRaHS) have thousands of participants across decades observations, while less mature citizen science projects shorter lifespans often focused on local or regional observations with tens hundreds participants. For latter, it can difficult transition into a more sustainable...

Abstract Owing to increased demands on ground water accompanied by drawdowns, technologies that use recharge options, such as aquifer storage recovery (ASR), are being used optimize available resources and reduce adverse effects of pumping. In this paper, three representative flow models were created assess the impact hydrogeologic operational parameters/factors efficiency ASR systems. Flow/particle tracking solute transport track movement during injection, storage, recovery. Results from...

Diurnal temperature fluctuations of surface water, as result solar heating, function a tracer that continuously exchanges energy between streams, streambed sediments, and discharging groundwater. Analytical solutions exist to estimate discharge by extracting the amplitude ratio pairs subsurface time series measurements. The research presented here adds expanding body heat tracing literature applying amplitude‐shift estimation method distributed sensor (DTS) fiber‐optic cables. A pair DTS...

Abstract Expansion and contraction of the hyporheic zone due to temporal hydrologic changes between stream riparian aquifer influence biogeochemical cycling capacity streams. Theoretical studies have quantified control groundwater discharge on depth zone; however, observations controls are limited. In this study, we develop concept groundwater‐dominated differential expansion explain in a third‐order reach flowing through glacially derived terrain typical Great Lakes region. We define as:...

Abstract Small streams often lack reliable hydrological data. Environmental agencies play a key role in providing such data; however, these are challenged by the growing monitoring needs and of funding. Given spatial mismatch between observed data small watersheds/headwaters, local volunteers can act as potentially valuable research partners. We examine how CrowdHydrology, citizen science program that collects stream stage temperature observations, improves hydrologic model Boyne River,...

Abstract Quantifying snowmelt‐derived fluxes at the watershed scale within hillslope environments is critical for investigating local meadow groundwater dynamics in high elevation riparian ecosystems. In this article, we investigate impact of flux from surrounding hillslopes on water table Tuolumne Meadows, which located Sierra Nevada Mountains California, USA. Results show levels are controlled by a combination boundaries, snowmelt and changes stream stage. Observed level fluctuations...

The Marcellus Shale, New York State, USA. Development of natural gas resources within the Shale will require large volumes water if high-volume hydraulic fracturing expands into State. Although this region has ample fresh resources, it is necessary to explore response hydraulically connected groundwater and surface systems withdrawals. Because such effects would not be apparent from a typical budget approach, study applied flow modelling under scenarios Emphasis on quantity, in contrast with...

ADVERTISEMENT RETURN TO ISSUEPREVViewpointNEXTIs Citizen Science Dead?Christopher S. Lowry*Christopher LowryAssociate Professor, Department of Geology and Environment Sustainability, University at Buffalo, 126 Cooke Hall, New York 14260, United States*Email: [email protected]More by Christopher Lowryhttp://orcid.org/0000-0003-0512-964X Kristine F. StepenuckKristine StepenuckExtension Assistant Rubenstein School the Natural Resources, The Vermont, 81 Carrigan Drive, Burlington, Vermont 05405,...

Abstract Citizen science is personal. Participation contingent on the citizens’ connection to a topic or interpersonal relationships meaningful them. But from peer-reviewed literature, scientists appear have an acquisitive data-centered relationship with citizens. This has spurred ethical and pragmatic criticisms of extractive citizen scientists. We suggest five practical steps shift citizen-science research relational, reorienting process providing reciprocal benefits researchers By virtue...

Abstract Citizen science yields increased scientific capacity in exchange for literacy and promises of a more responsive to society’s needs. Yet, citizen projects are criticized producing few outputs having exploitative relationships with the citizens who participate. In eagerness capture new data, scientists can fail see value scientists’ expertise beyond data generation forget close loop that benefit public interest. experts their local environments who, when asked, improve processes...

Abstract Globally, the number of people experiencing water stress is expected to increase by millions end century. The Great Lakes region, representing 20% world's surface freshwater, not immune stresses on supply due uncertainties impacts climate and land use change. It imperative for researchers policy makers assess changing state resources, even if region rich. This research developed integrated water‐groundwater GSFLOW model investigated effects change anthropogenic activities resources...

This paper examines two strategies aimed at demonstrating that moral obligations to improve global health exist. The 'humanitarian model' stresses all human beings, regardless of affluence or location, are fundamentally the same in terms status. model argues affluent citizens' assist less fortunate ones follow from desirability reducing disease and suffering world. 'political lives world's rich poor inextricably linked because harmful state-to-state actions currently existing transnational...