Firm Yield of River Intakes and Reservoirs

The firm undertake a firm yield analysis of all raw water intakes and reservoirs operated by the Puerto Rico Aqueduct and Sewer Authority. The project was a component of the “Puerto Rico Comprehensive Water Resources Plan” (Plan de Aguas) to establish the water availability and use priorities as established by the PR Water Law. Firm yield at river intakes were determined using low flow frequency analysis techniques based on an exceedance probability of 99% of the time. The strategy used for reservoirs was based on a water balance methodology. Over 140 river intakes and 20 reservoirs were analyzed.