Stream flow, ground water and climate change 
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Fig. 4. Simulated vs. observed groundwater tables (a: Piezometer DP4; b: Piezometer DP9). 
Future Rainfall = Current Rainfall x Change Factor 
where Change Factor is calculated based on the climate projections simulated from 
the Regional Climate Model - WRF (Weather Research and Forecasting model, http:// 
www.wrf-model.org; Liong & Raghavan, 2014). The matrix of three reservoir levels 
and four rainfall conditions results in a total of 12 simulated future scenarios. 
Fig. 5 and Fig. 6 respectively present the simulated groundwater table maps 
and surface water extent maps after 5 years corresponding to the management 
scenarios. Scenario 11, based on projected medium rainfall and high reservoir level, 
unsurprisingly is the most similar to the current conditions, due to the similar forcing 
resulting from (1) similar rainfall amount, and (2) the reservoir levels being kept close 
to their maximum capacity. 
