Or is it a water tank that occasionally hosts cultural events, the itinerary being dependent on weather conditions beyond a day's forecasted precipitation? One can't imagine it functional during the wet season or even during the dry season if rain isn't particularly scarce.
Of course, there's a simple solution: build a floating stage. The number of available seats might then determine what sort of program can be scheduled. If mostly empty, a popular band can be booked. If one or two tiers are available, an experimental play. How about a local production of Mary Zimmerman's Metamorphoses or an avant-garde staging of The Odyssey? A micro-naumachia?
Even in its flooded state, however, the space is still occupiable, a point of interest just like any of the artificial lakes and pools in the park.
Surprisingly adaptable, it's a space attuned to the temporal vagaries of climate, the fluctuating rate of water consumption and the cultural preferences of Quito's residents.
Rainwater Harvesting in Al-Andalus