Open the sluice gate.

Any time I have an internet connection, there's a sluice of stuff moving into there, everything from beautiful rings to cockpit photos.

So, after all the tourists that irrigate this poor region with precious income leave the viewing platforms below the falls, authorities close the sluice gates that dam the White Water River on the dangerously low upstream reservoir, and the falls cease. Then, each morning, before the tourists reappear, they unceremoniously open the gates again, so that the eerily silent falls suddenly revive in a simulacrum of normalcy.