| Records |
| Author |
Demuth, S.; Külls, C. |
| Title |
Probability analysis and regional aspects of droughts in southern Germany |
Type |
Journal Article |
Year  |
1997 |
Publication |
Sustainability of Water Resources under Increasing Uncertainty |
Abbreviated Journal |
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| Volume |
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Issue |
240 |
Pages |
97 |
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| Publisher |
Iahs |
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no |
| Call Number |
THL @ christoph.kuells @ Demuth1997probability |
Serial |
35 |
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| Author |
Klock, H.; Külls, C.; Udluft, P. |
| Title |
Estimating recharge values using hydrochemical and geological data: a case study from the |
Type |
Conference Article |
| Year |
2001 |
Publication |
Impact of Human Activity on Groundwater Dynamics: Proceedings of an International Symposium (Symposium S3) Held During the Sixth Scientific Assembly of the International Association of Hydrological Sciences (IAHS) at Maastricht, The Netherlands, from 18 t |
Abbreviated Journal |
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| Volume |
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Issue |
269 |
Pages |
25 |
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International Assn of Hydrological Sciences |
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no |
| Call Number |
THL @ christoph.kuells @ Klock2001estimating |
Serial |
60 |
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| Author |
Dahan, O.; Tatarsky, B.; Enzel, Y.; Külls, C.; Seely, M.; Benito, G. |
| Title |
Dynamics of flood water infiltration and ground water recharge in hyperarid desert |
Type |
Journal Article |
| Year |
2008 |
Publication |
Groundwater |
Abbreviated Journal |
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| Volume |
46 |
Issue |
3 |
Pages |
450-461 |
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| Publisher |
Blackwell Publishing Inc Malden, USA |
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no |
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THL @ christoph.kuells @ Dahan2008dynamics |
Serial |
27 |
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| Author |
Benito, G.; Rohde, R.; Seely, M.; Külls, C.; Dahan, O.; Enzel, Y.; Todd, S.; Botero, B.; Morin, E.; Grodek, T. |
| Title |
Management of alluvial aquifers in two southern African ephemeral rivers: implications for IWRM |
Type |
Journal Article |
| Year |
2010 |
Publication |
Water Resources Management |
Abbreviated Journal |
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| Volume |
24 |
Issue |
4 |
Pages |
641-667 |
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Springer Netherlands |
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no |
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THL @ christoph.kuells @ Benito2010management |
Serial |
25 |
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| Author |
Abiye, T. |
| Title |
Synthesis on groundwater recharge in Southern Africa: A supporting tool for groundwater users |
Type |
Journal Article |
| Year |
2016 |
Publication |
Groundwater for Sustainable Development |
Abbreviated Journal |
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| Volume |
2-3 |
Issue |
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Pages |
182-189 |
| Keywords |
Arid and semi-arid areas, Groundwater recharge, Recharge estimation methods, Southern Africa |
| Abstract |
This synthesis on groundwater recharge targets the Southern African region as a result of the dependence of the community and economic sector on the groundwater resource. Several literature based recharge studies were collected and assessed in order to find out the main controls to the occurrence of recharge. The Water Table Fluctuation and Base flow separation methods have been tested in the catchment that drains crystalline basement rocks and dolostones close to the city of Johannesburg, South Africa. Based on the assessed data the Chloride Mass Balance method resulted in groundwater recharge of less than 4% of the rainfall, while it reaches 20%, when rainfall exceeds 600mm. For the classical water balance method, recharge proportion is less than 3% of rainfall as a result of very high ambient temperature in the region. Based on the Saturated Volume Fluctuation and Water Table Fluctuation methods, recharge could be less than 6% for annual rainfall of less than 600mm. Observational results further suggest that sporadic recharge from high intensity rainfall has important contribution to the groundwater recharge in the region, owing to the presence of permeable geological cover, which could not be fully captured by most of the recharge estimation methods. This study further documents an evaluation of the most reliable recharge estimation methods in the area such as the chloride mass balance, saturated volume fluctuation and water table fluctuation methods in order to successfully manage the groundwater resource. |
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2352-801x |
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no |
| Call Number |
THL @ christoph.kuells @ abiye_synthesis_2016 |
Serial |
101 |
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| Author |
Brutsaert, W. |
| Title |
Global land surface evaporation trend during the past half century: Corroboration by Clausius-Clapeyron scaling |
Type |
Journal Article |
| Year |
2017 |
Publication |
Advances in Water Resources |
Abbreviated Journal |
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| Volume |
106 |
Issue |
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Pages |
3-5 |
| Keywords |
Evaporation, Climate change, Evaporation trend |
| Abstract |
Analyses of satellite data mainly over the world’s ocean surfaces have shown that during 1986–2006 global average values of atmospheric water vapor, precipitation and evaporation have increased at a relative rate of 0.0013a−1; this is roughly in accordance with the Clausius-Clapeyron equation for the average temperature trend during this period, and amounts to 0.065K−1 at the average temperature of T=14∘C. Application of this concept over the world’s land surfaces yields an average global evaporation trend during the past half century of around 0.4 to 0.5 mma−2; this confirms the values obtained in previous studies with totally different methods. |
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0309-1708 |
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Tribute to Professor Garrison Sposito: An Exceptional Hydrologist and Geochemist |
Approved |
no |
| Call Number |
THL @ christoph.kuells @ Brutsaert20173 |
Serial |
287 |
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| Author |
Androvitsanea, A.; Fawzy, M.; Fuchs, J.; Külls, C.; Fahlbusch, H.; Heiden, J. |
| Title |
Hydrologische Bedingungen im Heraion von Samos vom 12. bis 8. Jh. v. Chr. und ihre Bedeutung für die wasserbauliche Infrastruktur |
Type |
Journal Article |
| Year |
2018 |
Publication |
Environmental Water Engineering |
Abbreviated Journal |
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| Volume |
1 |
Issue |
1 |
Pages |
1-21 |
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THL @ christoph.kuells @ Androvitsanea2018hydrologische |
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17 |
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| Author |
Jamali, B.; Bach, P.M.; Deletic, A. |
| Title |
Rainwater harvesting for urban flood management – An integrated modelling framework |
Type |
Journal Article |
| Year |
2020 |
Publication |
Water Research |
Abbreviated Journal |
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| Volume |
171 |
Issue |
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Pages |
115372 |
| Keywords |
Rainwater harvesting tanks, Urban flood simulation, Rapid flood inundation model, Urban flood risk mitigation |
| Abstract |
It is well known that rainwater harvesting (RWH) can augment water supply and reduce stormwater pollutant discharges. Due to the lack of continuous 2D modelling of urban flood coverage and its associated damage, the ability of RWH to reduce urban flood risks has not been fully evaluated. Literature suggests that small distributed storage spaces using RWH tanks will reduce flood damage only during small to medium flooding events and therefore cumulative assessment of their benefits is needed. In this study we developed a new integrated modelling framework that implements a semi-continuous simulation approach to investigate flood prevention and water supply benefits of RWH tanks. The framework includes a continuous mass balance simulation model that considers antecedent rainfall conditions and water demand/usage of tanks and predicts the available storage prior to each storm event. To do so, this model couples a rainfall-runoff tank storage model with a detailed stochastic end-use water demand model. The available storage capacity of tanks is then used as a boundary condition for the novel rapid flood simulation model. This flood model was developed by coupling the U.S. EPA Storm Water Management Model (SWMM) to the Cellular-Automata Fast Flood Evaluation (CA-ffé) model to predict the inundation depth caused by surcharges over the capacity of the drainage network. The stage-depth damage curves method was used to calculate time series of flood damage, which are then directly used for flood risk and cost-benefit analysis. The model was tested through a case study in Melbourne, using a recorded rainfall time series of 85 years (after validating the flood model against 1D-2D MIKE-FLOOD). Results showed that extensive implementation of RWH tanks in the study area is economically feasible and can reduce expected annual damage in the catchment by up to approximately 30 percent. Availability of storage space and temporal distribution of rainfall within an event were important factors affecting tank performance for flood reduction. |
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0043-1354 |
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no |
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THL @ christoph.kuells @ Jamali2020115372 |
Serial |
239 |
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| Author |
Akter, A.; Tanim, A.H.; Islam, M.K. |
| Title |
Possibilities of urban flood reduction through distributed-scale rainwater harvesting |
Type |
Journal Article |
| Year |
2020 |
Publication |
Water Science and Engineering |
Abbreviated Journal |
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| Volume |
13 |
Issue |
2 |
Pages |
95-105 |
| Keywords |
Low-impact development (LID), SWMM, HEC-RAS, Remote sensing, Urban flooding, Inundation depth |
| Abstract |
Urban flooding in Chittagong City usually occurs during the monsoon season and a rainwater harvesting (RWH) system can be used as a remedial measure. This study examines the feasibility of rain barrel RWH system at a distributed scale within an urbanized area located in the northwestern part of Chittagong City that experiences flash flooding on a regular basis. For flood modeling, the storm water management model (SWMM) was employed with rain barrel low-impact development (LID) as a flood reduction measure. The Hydrologic Engineering Center’s River Analysis System (HEC-RAS) inundation model was coupled with SWMM to observe the detailed and spatial extent of flood reduction. Compared to SWMM simulated floods, the simulated inundation depth using remote sensing data and the HEC-RAS showed a reasonable match, i.e., the correlation coefficients were found to be 0.70 and 0.98, respectively. Finally, using LID, i.e., RWH, a reduction of 28.66% could be achieved for reducing flood extent. Moreover, the study showed that 10%–60% imperviousness of the subcatchment area can yield a monthly RWH potential of 0.04–0.45 m3 from a square meter of rooftop area. The model can be used for necessary decision making for flood reduction and to establish a distributed RWH system in the study area. |
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1674-2370 |
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no |
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THL @ christoph.kuells @ Akter202095 |
Serial |
247 |
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| Author |
Puri, S. |
| Title |
Chapter 9 – Transboundary aquifers: a shared subsurface asset, in urgent need of sound governance |
Type |
Book Chapter |
| Year |
2021 |
Publication |
Global Groundwater |
Abbreviated Journal |
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Issue |
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Pages |
113-128 |
| Keywords |
ILC Draft Articles, impact on GDP, sound governance, Transboundary aquifers |
| Abstract |
Apart from some notable exceptions, the sound governance of transboundary aquifers (coupled or uncoupled to rivers) is seriously lacking in most regions of the world, despite a highly successful 20-year ISARM initiative. The distinction between regions of water abundance (as in the Haute Savoie–Geneva aquifers) and those of water scarcity (\textless1000 m3/an/capita), as in the Rum-Saq aquifer, ought to be a driver for the urgency in adopting sound governance. In the latter regions, however, such an urgent response faces too many hurdles (institutional, financial, and weak capacity). Climate change, one of the global megatrends (among demography, economic shift, resources stress, urbanization, and novel viruses such as COVID-19), will exacerbate the problem in the coming decade and beyond. This chapter provides an critical perspective on the status of this subsurface asset in 570 or so, domestic and transboundary aquifers of the world (self-identified by country experts), while taking full account of their interconnections, or not, with surface waters. This critical perspective will be grounded in two important factors, first the hiatus in adoption by countries of the evolving international water law and guidance on transboundary aquifers (the Draft Articles, which provide legal pathways for collaboration or eventually dispute resolution), and second the framework of the sustainable development goals (SDG) 6 (clean water and sanitation), which countries have committed themselves to with reference to transboundary waters. The critical perspective finds that despite the lack of momentum in adopting formal global norms, sporadic cooperation and collaboration is continuing and is well received, when delivered methodically through the support of international agencies. The findings of the critical perspective are that even if water-related SDGs will have been achieved across the world, it would contribute precious little to meaningful enhancement of governance of transboundary aquifers, unless they have been explicitly addressed in terms that are tangible to decision makers, such as the impact of disregarding them on the current or future national GDP. The onset of a “new socioeconomic normal” in the aftermath of COVID-19 could further defer meaningful progress, taking the example of Latin America, where a 5% decline has been forecast for 2020. With such declines in the finances of governments, attention to shared aquifer resources may well decline even further. Urgent wise reaction to this possibility must be a priority for the professional science-policy community. |
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Elsevier |
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Mukherjee, A.; Scanlon, B.R.; Aureli, A.; Langan, S.; Guo, H.; McKenzie, A.A. |
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978-0-12-818172-0 |
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no |
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THL @ christoph.kuells @ mukherjee_chapter_2021 |
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106 |
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