Manual - Participatory rapid diagnosis and action ... - FAO.org

92 Annex A. Description of toolsTable A13. Some criteria for indicator selectionCriteria Bad example Good exampleSpecificReflect topics that thePRDA tries to changeNumber of inhabitantsper clinicSize (ha) of irrigatedplots per farmerEasy to collectIt must be possible tocollect information ina short time period atlow costsVariance of watersupply to allindividual plots of theschemePercentage of farmersdissatisfied with wateravailability at plot levelUnambiguousAnother personshould get the sameresult when s/he triesto collect the samedataPercentage of plotsthat look wellmaintainedPercentage of plotswithout weedsComparableThe item that iscompared shouldalso exist in otherschemes/countriesAverage value addedin local currencyAverage value added inUSD/haFinding comparable informationBenchmarking indicators for other irrigation schemes are readily availableand the PRDA is done simultaneously on more schemes. Information on cropyield and water distribution indicators can also be found through literature,the internet, national extension organizations and research institutes (e.g.www.iwmi.org) (Box A11).Box A11. PRDA Guidelines “STEP 2b”Reporting SHEET 2b contains examples of indicators that can be used forcomparison to other schemes.