Mercredi 13
Quelles méthodologies utilisées en Europe pour évaluer les économies d'eau ?

› 11:15 - 11:30 (15min)
The Italian experience on water saving
Silvia Baralla  1@  , Raffaella Zucaro  1, *@  , Marianna Ferrigno  2@  
1 : Council for Agricultural Research and Economics  (CREA)  -  Site web
Via Po, 14 00198 Rome -  Italie
2 : Council for Agricultural Research and Economics  (CREA)  -  Site web
Via di Corticella,133 40128 Bologna -  Italie
* : Auteur correspondant

Guaranteeing a sustainable and competitive agriculture is one of the main challenge, above all under climate change conditions and in scarcity of natural resources as water. The importance of water resources protection is also showed at European level with the creation of synergies and complementarities between Environmental and Water Policies and the Common Agricultural Policy. In the contest of CAP 2014-2020 Italy developed Regional Rural Programmes (RRP) and a National Programme for Rural Development (NPRD) to finance collective irrigation infrastructures co-financed with EU. In particular, the sub-measure 4.3 is oriented towards the pursuit of water saving as an action for environmental protection and adaptation to climate change providing eligibility conditions and selection criteria of the interventions in line with the water saving principles and, at local level, with the measures of the River Basin Management Plans (RBMP). The main eligible actions (improving the efficiency/building new reservoirs, adaptation/modernization of the irrigation network, interventions on drainage and irrigation canals, monitoring/remote-control systems, water energy efficiency, interventions for the reuse in agriculture of treated wastewater) aim at preserving/achieve the objectives of environmental quality of water bodies WFD (in compliance with article 46 of reg. 1305/2013) and increase the potential/real water saving. Considering the goal, the priority was given to those investments that guarantee potential water savings (especially in areas located in protected areas), allow the collective irrigation in areas not historically equipped with collective networks (where droughts make frequent the use of autonomous and unplanned irrigation) and achieve water savings without increasing in irrigated area. Among the requirements for funding (by European – EAFRD and National Development and Cohesion-NDC funds) an estimation of potential water saving was requested to the beneficiaries (irrigation consortia/other public bodies in charge for collective irrigation). In this sense different methodologies for the estimation were proposed by them and validated by expert (e.g. considering the distribution of water in the irrigation season for a specific year in relation to the irrigated area, net of the overall water loss or the values of average daily flow rate of the last 7 years and the number of days in which these flows were actually supplied). The percentage value of water saving, not always estimated starting from the initial value (mc used before and after the intervention), sometimes was referred to the results of water savings of similar interventions already financed in contiguous areas/areas with similar characteristics. In other cases, this % value was sometimes referred to the irrigation use expressed in l/s per hectare. At farm level, an interesting methodology to calculate the water saving comes from some regions, especially Veneto, that, within the Regional Programmes for Rural Development (RPDP – EAFRD funds), finances farm investments to improve the overall performance and sustainability of the farm and face water scarcity imposing, as eligibility condition, the implementation of a potential water saving calculated considering the total water requirement of the surface served by the plant related to the existing irrigation system efficiency and same efficiency but with the new irrigation system

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