Fig. 5. Comparison of the median monthly flow values for the unregulated flow regime (green; error bars bracket the middle third of the distribution) and the regulated (simulated) flow regime (black) at Cayetano. The IHA analysis indicated that the greatest hydrological alterations will be elevated low flows during the dry season, and a decline in high-flow pulses during the early part of the wet season when the reservoir is filling to capacity.