With the human population in Kenya annually increasing by 3% (United Nations Educational, Scientific and Cultural Organization, 2011) and a 55% increase in agricultural land in the last 14 years, the Mau Forest is under pressure and interdisciplinary modelling efforts have predicted increased water demands and continued alteration of flow regimes for the future (Mango et al., 2011; Melesse et al., 2008; Mutie et al., 2006).