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

Author(s):  
Giacomo Bernello ◽  
Elena Mondino ◽  
Lucia Bortolini

<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>

2020 ◽  
Author(s):  
Gregor Johnen ◽  
Klaudija Sapač ◽  
Simon Rusjan ◽  
Vesna Zupanc ◽  
Andrej Vidmar ◽  
...  

<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>


2021 ◽  
Vol 292 ◽  
pp. 112849
Author(s):  
Andrea Staccione ◽  
Davide Broccoli ◽  
Paolo Mazzoli ◽  
Stefano Bagli ◽  
Jaroslav Mysiak

2007 ◽  
Vol 11 ◽  
pp. 93-99 ◽  
Author(s):  
T. Conradt ◽  
M. Kaltofen ◽  
M. Hentschel ◽  
F. F. Hattermann ◽  
F. Wechsung

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.


2022 ◽  
pp. 225-238
Author(s):  
Winmore Kusena

The chapter assesses the notion of local scale and decentralization that emanates from the IWRM principles. Evaluation of the benefits of decentralization was done through the political ecology lens that critically examines fairness and power struggles across spaces. Sanyati catchment was used to draw empirical evidence in light of the theoretical expectations of decentralization towards catchment water security. Qualitative approach was used to collect data. Interviews were the main sources of data collection. The findings showed that decentralization has failed to produce the desired results compared to what is assumed in the dominant narrative that highly esteems the decentralization management approach. The chapter showed that what brings results are not local scales and suggests that probably fair and transparent resource distribution and allocation at any scale may bring about water protection that does not trigger the tragedy of the commons.


Author(s):  
Rikito HISAMATSU ◽  
Ken KAWABE ◽  
Yusuke MIZUNO ◽  
Yoshinobu SHINOZUKA ◽  
Kei HORIE

2011 ◽  
Vol 33 (1-3) ◽  
pp. 172-177 ◽  
Author(s):  
V. Tryfona-Panagopoulou ◽  
S. Panagopoulos ◽  
C. Panagopoulou ◽  
Α. Κungolos

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