IDEAS home Printed from
   My bibliography  Save this paper

Performances And Efficiencies Of The Irrigation Water Users’ Associations In Tunisia


  • Frija, Aymen
  • Speelman, Stijn
  • Chebil, Ali
  • Buysse, Jeroen
  • Van Huylenbroeck, Guido


This article analyzes the efficiency of Water Users Associations (WUA) in the Cap Bon region (Tunisia) and studies its main determinants. The analysis is performed in two stages. First, the efficiency is measured via the nonparametric “Data Envelopment Analysis” (DEA) technique. The DEA models are constructed not only to assess the overall WUA efficiency but also to evaluate the management and engineering sub-vectors efficiencies separately through a mathematical modification in the initial DEA model. In a second stage critical determinants of efficiency are determined using a Tobit model. In this analysis the focus is on technical (characteristics of the irrigation area and network), organizational and administrative variables. Results show that on average 18.7% of the used inputs could be saved if the WUA would operate on the frontier. The average scale efficiency, which can be calculated as the ratio between Constant and Variable Returns to Scale efficiency measures was around 71%, indicating that many WUAs are not operating at an efficient scale. Subvectors efficiencies show that WUAs present better performances in maintenance activities than in management. The inefficiency found can furthermore be mainly attributed to the number of years of experience in operating a WUA in addition to the number of water pumping stations managed and the rate of the exploited area. The scale inefficiencies are mainly due to administrative and organizational variables.

Suggested Citation

  • Frija, Aymen & Speelman, Stijn & Chebil, Ali & Buysse, Jeroen & Van Huylenbroeck, Guido, 2008. "Performances And Efficiencies Of The Irrigation Water Users’ Associations In Tunisia," 107th Seminar, January 30-February 1, 2008, Sevilla, Spain 6460, European Association of Agricultural Economists.
  • Handle: RePEc:ags:eaa107:6460

    Download full text from publisher

    File URL:
    Download Restriction: no

    References listed on IDEAS

    1. R. D. Banker & A. Charnes & W. W. Cooper, 1984. "Some Models for Estimating Technical and Scale Inefficiencies in Data Envelopment Analysis," Management Science, INFORMS, vol. 30(9), pages 1078-1092, September.
    2. Alfons Oude Lansink & Ky–sti Pietola, 2002. "Effciency and productivity of conventional and organic farms in Finland 1994--1997," European Review of Agricultural Economics, Foundation for the European Review of Agricultural Economics, vol. 29(1), pages 51-66, March.
    3. Balaguer-Coll, Maria Teresa & Prior, Diego & Tortosa-Ausina, Emili, 2007. "On the determinants of local government performance: A two-stage nonparametric approach," European Economic Review, Elsevier, vol. 51(2), pages 425-451, February.
    4. Darryl Holden, 2004. "Testing the Normality Assumption in the Tobit Model," Journal of Applied Statistics, Taylor & Francis Journals, vol. 31(5), pages 521-532.
    5. Knox, Anna & Meinzen-Dick, Ruth Suseela, 2000. "Collective action, property rights, and devolution of natural resource management: exchange of knowledge and implications for policy," CAPRi working papers 11, International Food Policy Research Institute (IFPRI).
    6. António Afonso & Mariana Santos, 2005. "Students and Teachers: A DEA Approach to the Relative Efficiency of Portuguese Public Universities," Working Papers Department of Economics 2005/07, ISEG - Lisbon School of Economics and Management, Department of Economics, Universidade de Lisboa.
    Full references (including those not matched with items on IDEAS)

    More about this item


    WUA; irrigation; efficiency; DEA method; Institutional and Behavioral Economics; Land Economics/Use;

    NEP fields

    This paper has been announced in the following NEP Reports:


    Access and download statistics


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ags:eaa107:6460. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (AgEcon Search). General contact details of provider: .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.