Fig. 8. Results of our reservoir-filling mass-balance model. Top graph shows hydrology for 1985 (one of the driest years in the record), showing unregulated (inflow to reservoir; light gray), regulated (simulated outflow with dam operation; thick blue), and reservoir storage deficit (thin black line). The bottom graph shows an implementation scenario for an environmental flow regime for the same year that includes two early wet-season high-flow pulses (in solid circle) and three mid wet-season high-flow pulses (within dashed circles). These pulses delay reservoir filling by only 8 d. The red arrow indicates the day that the reservoir would have refilled under the regulated flow regime, and the black arrow indicates the day the reservoir would have refilled under the recommended environmental flow regime. MCM = million cubic meters.