Aerator at Soulajoule Reservoir

On a ride through Petaluma and Marshall a bit ago, took a detour through a gate down to Soulajule Reservoir, (I'd never heard of it!), which was nearly bone dry, its remaining water nearly fluorescent green from algae bloom. On the other side of the spillway, discovered remaining water spitting through this aerator before being delivered back into a creek at the bottom. Lovely rainbows from some angles, but dug this single spitting pipe.
In The Built World. Taken: Oct. 16, 2021