Preprints

Filtering by Subject: Water Resource Management

Groundwater resource allocation in British Columbia: challenges and ways forward

Tom Gleeson, Diana M Allen

Published: 2022-06-24
Subjects: Environmental Engineering, Hydrology, Sustainability, Water Resource Management

Groundwater allocation in British Columbia is facing a number of important challenges as groundwater is licensed under the Water Sustainability Act and potentially included in modern treaties. These challenges include acknowledging the importance of groundwater in supporting environmental flow needs and human water use, the uncertainty and irrelevance of annual recharge estimates, and the [...]

A univariate extreme value analysis and change point detection of monthly discharge in Kali Kupang, Central Java, Indonesia

Sandy Hardian Susanto Herho

Published: 2022-05-19
Subjects: Applied Statistics, Hydrology, Probability, Water Resource Management

This study presents how Extreme Value Analysis (EVA) can be used to predict future extreme hydrological events and how dynamic-programming based change point detection algorithm can be used to detect the abrupt transition in discharge events variability in Kali Kupang, Central Java, Indonesia. By using the annual block maxima, we can predict the upper extreme discharge probability from the Gumbel [...]

Quantifying excess heavy metal concentrations in drainage basins using conservative mixing modelling

Jonas Alexander Eschenfelder, Alex G. Lipp, Gareth G Roberts

Published: 2022-05-13
Subjects: Earth Sciences, Environmental Sciences, Geochemistry, Geomorphology, Physical Sciences and Mathematics, Sustainability, Water Resource Management

High concentrations of heavy metals and other pollutants in river sediments can have detrimental effects on the health of ecosystems and humans. As such, determining the composition of river sediments throughout drainage basins is an essential aspect of environmental monitoring. Well characterised natural baseline concentrations are important information with which observations can be compared [...]

Interactive Hydrological Modelling and Simulation on Client-Side Web Systems: An Educational Case Study

Gregory James Ewing, Ricardo Mantilla, Witold F. Krajewski, et al.

Published: 2022-04-13
Subjects: Civil and Environmental Engineering, Earth Sciences, Education, Engineering, Engineering Education, Environmental Education, Environmental Engineering, Hydraulic Engineering, Hydrology, Numerical Analysis and Scientific Computing, Other Civil and Environmental Engineering, Physical Sciences and Mathematics, Science and Mathematics Education, Water Resource Management

Computational hydrological models and simulations are fundamental pieces of the workflow of contemporary hydroscience research, education, and professional engineering activities. In support of hydrological modelling efforts, web-enabled tools for data processing, storage, computation, and visualization have proliferated. Most of these efforts rely on server resources for computation and data [...]

Groundwater in complex adaptive social-ecological systems

Xander Huggins, Tom Gleeson, Juan Castilla-Rho, et al.

Published: 2022-04-08
Subjects: Dynamical Systems, Hydrology, Natural Resources and Conservation, Natural Resources Management and Policy, Nature and Society Relations, Sustainability, Water Resource Management

Groundwater is embedded in social and ecological systems but the complexity of these interactions is not well represented in conventional approaches to study and promote groundwater sustainability. We argue an important shift is necessary in groundwater sustainability thinking: towards prioritizing the functions of groundwater, and the services that make it a critical resource, and away from [...]

A machine learning approach to water quality forecasts and sensor network expansion: Case study in the Wabash River Basin, USA

Tyler Balson, Adam Scott Ward

Published: 2022-04-06
Subjects: Civil and Environmental Engineering, Engineering, Environmental Sciences, Other Civil and Environmental Engineering, Physical Sciences and Mathematics, Water Resource Management

Midwestern cities require forecasts of surface nitrate loads to bring additional treatment processes online or activate alternative water supplies. Concurrently, networks of nitrate monitoring stations are being deployed in river basins, co-locating water quality observations with established stream gauges. However, tools to evaluate the future value of expanded networks to improve water quality [...]

Advancing Hydroinformatics and Water Data Science Instruction: Community Perspectives and Online Learning Resources

Amber S Jones, Jeffery S Horsburgh, Camilo J Bastidas Pacheco, et al.

Published: 2022-03-26
Subjects: Civil and Environmental Engineering, Education, Engineering, Hydrology, Science and Mathematics Education, Water Resource Management

Hydroinformatics and water data science topics are increasingly common in university graduate settings through dedicated courses and programs as well as incorporation into traditional water science courses. The technical tools and techniques emphasized by hydroinformatics and water data science involve distinctive instructional styles, which may be facilitated by online formats and materials. In [...]

Missing snowmelt runoff following drought explained by root-zone storage deficits

Dana Ariel Lapides, W Jesse Hahm, Daniell M Rempe, et al.

Published: 2022-03-05
Subjects: Water Resource Management

Water resources management in mountainous regions hinges on forecasting runoff during annual snowmelt periods. However, extreme droughts are altering snowpack-runoff relationships. The current megadrought in the Western United States provides a case in point: in 2021 in California, the historically reliable relationship between April 1 snowpack and runoff failed---much less streamflow arrived [...]

Camera-Based Intelligent Stream Stage Sensing for Decentralized Environmental Monitoring

Yusuf Sermet, Ibrahim Demir

Published: 2022-03-02
Subjects: Artificial Intelligence and Robotics, Civil and Environmental Engineering, Electrical and Computer Engineering, Engineering, Environmental Monitoring, Water Resource Management

On average, flood damages cost $4.4 billion in the US annually. Accurate, vast, and real-time coverage of water level monitoring is crucial for the advancement of environmental research, specifically in the areas of climate change, water distribution, and natural disaster preparedness and management. According to a 2018 EPA report, there are 2.7 million streams and associated watersheds in the US [...]

The influence of layer and voxel geological modelling strategy on groundwater modelling results

Trine Enemark, Lærke Andersen, Anne-Sophie Høyer, et al.

Published: 2022-02-01
Subjects: Earth Sciences, Water Resource Management

Reliable groundwater model predictions are dependent on representative models of the geological environment, which can be modelled using several different techniques. In order to inform the choice of the geological modelling technique, the differences between a layer modelling approach and a voxel modelling approach were analyzed. The layer model consist of stratigraphically ordered surfaces, [...]

ReaLSAT, a global dataset of reservoir and lake surface area variations

Ankush Khandelwal, Anuj Karpatne, Praveen Ravirathinam, et al.

Published: 2022-01-11
Subjects: Hydrology, Other Computer Sciences, Water Resource Management

Lakes and reservoirs, as most humans experience and use them, are dynamic bodies of water, with surface extents that increase and decrease with seasonal precipitation patterns, long-term changes in climate, and human management decisions. This paper presents a new global dataset that contains the location and surface area variations of 683,734 medium-sized (0.1 - 100 sq. km.) lakes and reservoirs [...]

Quantifying Streamflow Depletion from Groundwater Pumping: A Practical Review of Past and Emerging Approaches for Water Management

Sam Zipper, William H Farmer, Andrea Brookfield, et al.

Published: 2022-01-07
Subjects: Environmental Indicators and Impact Assessment, Hydrology, Natural Resources Management and Policy, Sustainability, Water Resource Management

Groundwater pumping can cause reductions in streamflow (“streamflow depletion”) that must be quantified for conjunctive management of groundwater and surface water resources. However, streamflow depletion cannot be measured directly and is challenging to estimate because pumping impacts are masked by streamflow variability due to other factors. Here, we conduct a management-focused review of [...]

A Comprehensive Web-based System for Flood Inundation Map Generation and Comparative Analysis Based on Height Above Nearest Drainage

Zhouyayan Li, Ibrahim Demir

Published: 2021-12-31
Subjects: Earth Sciences, Environmental Sciences, Hydrology, Water Resource Management

It is critical to obtain accurate flood extent predictions in a timely manner in order to reduce flood-related casualties and economic losses. Running a real-time flood inundation mapping model is a critical step in supporting quick flood response decisions. Most inundation systems, on the other hand, are either overly demanding in terms of data and computing power or have limited interaction and [...]

GANSim-3D for conditional geomodelling: theory and field application

Suihong Song, Tapan Mukerji, Jiagen Hou, et al.

Published: 2021-12-22
Subjects: Artificial Intelligence and Robotics, Computational Engineering, Geology, Hydrology, Numerical Analysis and Scientific Computing, Oil, Gas, and Energy, Theory and Algorithms, Water Resource Management

Geomodelling of subsurface reservoirs is important for water resources, hydrocarbon exploitation, and Carbon Capture and Storage (CCS). Traditional geostatistics-based approaches cannot abstract complex geological patterns and are thus not able to simulate very realistic earth models. We present a Generative Adversarial Networks (GANs)-based 3D reservoir simulation framework, GANSim-3D, which can [...]

Estuarine-deltaic controls on coastal carbon burial in the western Ganges-Brahmaputra delta over the last 5,000 years

Rory Patrick Flood, Margaret Georgina Milne, Graeme T Swindles, et al.

Published: 2021-11-26
Subjects: Applied Statistics, Biogeochemistry, Earth Sciences, Environmental Sciences, Geochemistry, Geology, Geomorphology, Other Earth Sciences, Other Environmental Sciences, Other Statistics and Probability, Physical Sciences and Mathematics, Sedimentology, Statistical Methodology, Statistical Models, Statistics and Probability, Water Resource Management

The Ganges–Brahmaputra fluvial system drains the Himalayas and is one of the largest sources of terrestrial biosphere carbon to the ocean. It represents a major continental reservoir of CO2 associated with c. 1–2 billion tons of sediment transported each year. Shallow coastal environments receive substantial inputs of terrestrial carbon (900 Tg C yr−1), with allochthonous carbon capture on [...]

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