scholarly journals Natural water retention ponds for water management in agriculture: A potential scenario in Northern Italy

2021 ◽  
Vol 292 ◽  
pp. 112849
Author(s):  
Andrea Staccione ◽  
Davide Broccoli ◽  
Paolo Mazzoli ◽  
Stefano Bagli ◽  
Jaroslav Mysiak
Keyword(s):  
Water Management ◽  
Natural Water ◽  
Water Retention ◽  
Northern Italy ◽  
Retention Ponds

Exploring Perceptions of Natural Water Retention Measures and Their Implementation: A Case Study in Northeastern Italy

2021 ◽  
Author(s):  
Giacomo Bernello ◽  
Elena Mondino ◽  
Lucia Bortolini
Keyword(s):  
Water Management ◽  
Natural Water ◽  
Heavy Rainfall ◽  
Water Retention ◽  
Flood Damage ◽  
Management Approach ◽  
Public Areas ◽  
Resilient Communities ◽  
Northeastern Italy ◽  
Potential Damage

<p>Heavy rainfall is one of the hydrogeological hazards increasingly connected with climatic changes. Natural Water Retention Measures (NWRMs) implementation represents a chance to build resilient communities and to reduce potential damage. This water management approach has several designs and can be adopted at different scales. However, NWRMs are not widespread, and in some cases they are even ignored by both citizens and public administrations. Understanding how people perceive NWRMs is the first step to promote the implementation of these structures. This study aims at exploring people’s knowledge of NWRMs and their attitudes towards them. We conducted a survey in the Veneto Region (Northeastern Italy) in 2020. Preliminary data exploration shows that the overall knowledge of NWRMs varies depending on the type of retention measure. Respondents’ attitudes towards NWRMs are positive in public areas (e.g. green spaces, parking lots), but are more heterogeneous when it comes to private properties (e.g. houses, private gardens). Further investigations are therefore needed concerning the last point. This study provides a deeper understanding of the dynamics behind water management systems’ implementation to reduce heavy rainfall and flood damage and can inform policymakers dealing with flood risk management.</p>

scholarly journals Impacts of global change on water-related sectors and society in a trans-boundary central European river basin – Part 2: from eco-hydrology to water demand management

2007 ◽  
Vol 11 ◽  
pp. 93-99 ◽  
Author(s):  
T. Conradt ◽  
M. Kaltofen ◽  
M. Hentschel ◽  
F. F. Hattermann ◽  
F. Wechsung
Keyword(s):  
Water Management ◽  
Natural Water ◽  
Power Plants ◽  
Hydrological Model ◽  
Demand Management ◽  
Storage Management ◽  
Management Model ◽  
Star Model ◽  
Elbe River ◽  
First Results

Abstract. This second part of the paper presents the details of the eco-hydrological model SWIM simulating the natural water supply and its coupling to WBalMo, a water management model. Based on the climate scenarios of the STAR model, SWIM simulates the natural water and matter fluxes for the entire Elbe River area. All relevant processes are modelled for hydrotopes and the resulting discharges are accumulated in subbasins. The output data are input for the water management model WBalMo and the quality models Moneris and QSim. WBalMo takes storage management, inputs and withdrawals into account and analyses how demands by industry, power plants and households will be met at changing natural supply conditions. Some of the first results shall be presented here.

scholarly journals Monitoring Green Infrastructure for Natural Water Retention Using Copernicus Global Land Products

2019 ◽  
Vol 11 (13) ◽  
pp. 1583 ◽  
Author(s):  
Taramelli ◽  
Lissoni ◽  
Piedelobo ◽  
Schiavon ◽  
Valentini ◽  
...  
Keyword(s):  
Natural Water ◽  
Green Infrastructure ◽  
Water Retention ◽  
Environmental Planning ◽  
Research Experiences ◽  
Wide Range ◽  
Global Land ◽  
Policy Objectives ◽  
Floods And Droughts

Nature-based solutions are increasingly relevant tools for spatial and environmental planning, climate change adaptation (CCA), and disaster risk reduction (DRR). For this reason, a wide range of institutions, governments, and financial bodies are currently promoting the use of green infrastructure (GI) as an alternative or a complement to traditional grey infrastructure. A considerable amount of research already certifies the benefits and multi-functionality of GI: natural water retention measures (NWRMs), as GIs related specifically to the water sector are also known, are, for instance, a key instrument for the prevention and mitigation of extreme phenomena, such as floods and droughts. However, there are persisting difficulties in locating and identifying GI and one of the most promising solutions to this issue, the use of satellite-based data products, is hampered by a lack of well-grounded knowledge, experiences, and tools. To bridge this gap, we performed a review of the Copernicus Global Land Service (CGLS) products, which consist of freely-available bio-geophysical indices covering the globe at mid-to-low spatial resolutions. Specifically, we focused on vegetation and energy indices, examining previous research works that made use of them and evaluating their current quality, aiming to define their potential for studying GI and especially NWRMs related to agriculture, forest, and hydro-morphology. NWRM benefits are also considered in the analysis, namely: (i) NWRM biophysical impacts (BPs), (ii) ecosystem services delivered by NWRMs (ESs), and (iii) policy objectives (POs) expressed by European Directives that NWRMs can help to achieve. The results of this study are meant to assist GI users in employing CGLS products and ease their decision-making process. Based on previous research experiences and the quality of the currently available versions, this analysis provides useful tools to identify which indices can be used to study several types of NWRMs, assess their benefits, and prioritize the most suitable ones.

Modeling and evaluation of the effect of afforestation on the runoff generation within the Glinščica catchment (Slovenia)

2020 ◽  
Author(s):  
Gregor Johnen ◽  
Klaudija Sapač ◽  
Simon Rusjan ◽  
Vesna Zupanc ◽  
Andrej Vidmar ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Natural Water ◽  
Water Retention ◽  
Flood Damage ◽  
Tree Cover ◽  
Economic Losses ◽  
Runoff Generation ◽  
Peak Reduction ◽  
Engineering Structures ◽  
Flood Regulation

<p><strong>Modeling and evaluation of the effect of afforestation on the runoff generation within the Glinščica catchment (Slovenia)</strong></p><p><strong>Gregor Johnen<sup>1</sup>, Klaudija Sapač<sup>2</sup>, Simon Rusjan<sup>2</sup>, Vesna Zupanc<sup>3</sup>, Andrej Vidmar<sup>2</sup>, Nejc Bezak<sup>2</sup></strong></p><p><sup>1 </sup>Radboud University Nijmegen, Faculty of Science</p><p><sup>2</sup> University of Ljubljana, Faculty of Civil and Geodetic Engineering</p><p><sup>3</sup> University of Ljubljana, Biotechnical Faculty</p><p><strong> </strong></p><p><strong>Abstract</strong>:</p><p>Increases in the frequency of flood events are one of the major risk factors induced by climate change that lead to a higher vulnerability of affected communities. Natural water retention measures such as afforestation on hillslopes and floodplains are increasingly discussed as cost-effective alternatives to hard engineering structures for providing flood regulation, particularly when the evaluation also considers beneficial ecosystem services other than flood regulation. The present study provides combined modelling approach and a cost-benefit analysis (CBA) of the impacts of afforestation on peak river flows and on selected ecosystem services within the Glinščica river catchment in Slovenia. In order to investigate the effects, the hydrological model HEC-HMS, the hydraulic model HEC-RAS and the flood damage model KRPAN, that was developed specifically for Slovenia, are used. It was found that increasing the amount of tree cover results in a flood peak reduction ranging from 9-13 %. Flood extensions were significantly lower for most scenarios leading to reduced economic losses. However, a 100-years CBA only showed positive net present values (NPV) for one of the considered scenarios and the benefits were dominated by the flood regulation benefits, which were higher than for example biodiversity or recreational benefits. Based on our findings we conclude that afforestation as a sole natural water retention measure (NWRM) provides a positive NPV only in some cases (i.e. scenarios) and if additional ecosystem co-benefits are considered.</p>

scholarly journals POSSIBILITIES TO RESTORE NATURAL WATER REGIME IN THE ŽUVINTAS LAKE AND SURROUNDING WETLANDS ‐ MODELLING ANALYSIS APPROACH/NATŪRALAUS VANDENS REŽIMO ŽUVINTO EŽERE IR APLINKINĖSE PELKĖSE ATKŪRIMO ANALIZĖ TAIKANT MATEMATINĮ MODELIAVIMĄ/ AНAЛИЗ ВОССТАНОВЛЕНИЯ ВОДНОГО РЕЖИМА В ОЗЕРЕ ЖУВИНТАС И ОКРУЖАЮЩИХ БОЛОТАХ С ПОМОЩЬЮ МЕТОДА МАТЕМАТИЧЕСКОГО МОДЕЛИРОВАНИЯ

2008 ◽  
Vol 16 (3) ◽  
pp. 105-112 ◽  
Author(s):  
Arvydas Povilaitis ◽  
Erik P. Querner
Keyword(s):  
Water Management ◽  
Natural Water ◽  
Large Scale ◽  
Water Regime ◽  
Hydrological Regime ◽  
Distributed Parameter ◽  
Modelling Analysis ◽  
Physically Based ◽  
Management Alternatives ◽  
The Impact

The Žuvintas Lake, located in southern Lithuania in the basin of the Dovine River is one of the biggest lakes and the oldest natural reserves of the country. However, the changes in the hydrology of the Dovine River basin, caused by large‐scale melioration and water management works carried out in the 20th century, have resulted in significant alteration of hydrological regime and decrease in biodiversity of the Žuvintas Lake and surrounding wetlands. In order to prevent the ongoing deterioration of the Lake and wetlands solutions have to be found. Therefore, various scenarios have been analysed to evaluate the impact of water management alternatives. For these scenarios the physically‐based distributed parameter model SIMGRO was used. The results have shown that natural water regime in the Žuvintas Lake is hardly reversible. However, the replacement of sluice‐gates implemented at the outlet of the Žuvintas Lake by overflow weir as well as the blocking of drainage ditches and the removal of scrubs and trees in the wetlands surrounding the Lake can be highly successful measures to improve hydrological conditions. Santrauka Dovinės upės (dešinysis Šešupės upės intakas) baseine yra seniausias Lietuvoje Žuvinto biosferos rezervatas ir kitos europinės svarbos saugomos teritorijos. Tose vietose hidrologinis režimas tiesiogiai reguliuojamas šešiose vietose pastatytais reguliavimo šliuzais. Šiuo metu poreikio reguliuoti nėra, todėl darbe analizuojamos natūralaus vandens režimo atkūrimo galimybės Žuvinto ežere ir aplinkinėse pelkėse. Tam buvo taikytas matematinio modeliavimo metodas naudojant pasiskirsčiusių parametrų SIMGRO modelį. Ankstesni tyrimai parodė, kad atkurti natūralų hidrologinį režimą vien panaikinus reguliavimo šliuzą žemiau Žuvinto ežero, negalima. Tai sunaikintų ežerą ir neigiamai paveiktų požeminio vandens režimą Žuvinto ir Amalvos pelkių komplekse. Siekiant bent dalinio vandens režimo natūralizavimo reguliavimo šliuzą siūloma rekonstruoti į slenkstinę nuopylą įrengiant žuvitakį. Žuvinto ir Amalvos pelkių masyve požeminio vandens režimui pagerinti rekomenduojama pašalinti ten augančią sumedėjusią augaliją ir apypelkio teritorijose patvenkti melioracijos griovius. Pateikiamas tokių priemonių galimas poveikis Žuvinto ežero ir aplinkinių pelkių hidrologiniam režimui. Peзюме Водный режим бассейнa реки Довине в южной части Литвы в прошлом столетии был подвержен важным изменениям. Там находится старый заповедник Литвы – озеро Жувинтас c близлежащими болотaми. В статье представлен сценарий по восстановлению водного режима в озере Жувинтас и окружающих болотах. Для исследования была применена математическая модель SIMGRO. Результаты показали, что полное восстановление гидрологического режима в озере невозможно. Для улучшения водного режима предложен ряд мер.

Achieving Flood Reduction with Natural Water Retention Measures in Agricultural Catchments in Ireland 

2021 ◽  
Author(s):  
Pia Laue ◽  
Paul Quinn ◽  
Mary Bourke ◽  
Darragh Murphy ◽  
Mark Wilkinson ◽  
...  
Keyword(s):  
Land Use ◽  
Natural Water ◽  
Water Retention ◽  
Water Storage ◽  
Sediment Traps ◽  
Water Levels ◽  
Storm Events ◽  
Peak Reduction ◽  
Flood Water ◽  
The Impact

<p>In recent decades, land-use and climate change have dramatically altered catchment runoff rates. For example, agriculture intensification has led to increased flood risks by decreasing  soil permeability and reducing channel-floodplain connectivity. Natural Water Retention Measures (NWRM) is an approach that has been adopted European-wide for the attenuation of peak floods and the provision of wider ecosystem services. A reduction in peak flow is achieved by increasing water storage potential in the landscape and by modifying natural flow pathways. In agricultural areas (~70% of Irish land use),  runoff attenuation features such as offline ponds, earthen bunds, sediment traps and leaky dams are frequently deployed natural retention measures.</p><p>Despite the growing evidence across Europe of their efficacy for flood peak reduction, water quality enhancement and biodiversity on the local scale, NWRM features have not been adopted in Ireland as a flood mitigation approach. In order to build a case that will help address this, this presentation will detail a NWRM demonstrate site in Ballygow, Co. Wexford.  The construction and instrumentation of a network of features developed at the field-scale (~1km<sup>2</sup>) is shown. This site is an intensive pasture, small-hold farm. We aim to quantify the effectiveness of these NWRM features to demonstrate their potential to attenuate flood peaks on agricultural areas using temporary storage, whilst minimising the impact on farming.</p><p>The constructed measures consist of a flood swale that connects the channel to the floodplain during high flows, an earthen bund, an offline pond with a sediment trap, that can retain the water from the channel and contributing field slopes, for <12 hours. On-site video footage and eyewitnesses confirm that the flood water flows along the field without draining back into the stream. At approximately 800m across the field, the water is retained temporarily, permitting water storage and the opportunity for suspended sediment to settle out of the water column. Flood water is returned to the channel via a perched 20 cm diameter pipe in the bund. Four automated water level recorders (In-Situ Rugged Troll 100) continuously monitor water levels in the stream and the offline pond at 5 min intervals. In addition, local rainfall (EML Event Logger) is monitored. These data are used to identify the hydrograph characteristics of several storm events and are used to determine the effectiveness of the NWRM structures for flood attenuation. The quantification of the effectiveness of NWRM features will use the observed time series combined with hydraulic and hydrological modelling. </p><p>The quantitative evidence provided by our findings will contribute to establishing vital evidence for the implementation of local and national NWRM schemes in Ireland.</p>

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