“…As a result, many inexact optimization methods, based on fuzzy set theory and stochastic analysis, were advanced for addressing uncertainties of fuzziness and randomness in water resources management systems. Stochastic programming is effective for dealing with decision problems whose coefficients (input data) are not certainly known but could be represented as chances or probabilities (Dupačová et al, 1991;Rangarajan and Simonovic, 1999;Darby-Dowman et al, 2000;Li et al, 2006;Ganji et al, 2007;Harrison, 2007;Guha, 2008;Kumar and Merwade, 2009;Qin and Huang, 2009;Cui et al, 2010). For example, Abrishamchi et al (1991) studied reservoir systems planning for irrigation districts through a chance-constrained programming (CCP) model; Huang (1998) developed an inexact CCP method for examining risk of violating system constraints and for dealing with uncertainties expressed as probabilities and intervals.…”