Many years ago when Arroyo El Portezuelo overflowed its banks after a similar heavy rainfall, my in-laws built a short wall along the back to keep the waters at bay. We were rather nervous on Tuesday, wondering whether the wall would be sufficient!
Here's a short video we shot:
To give you some perspective, I'm including three photos of the same place (our neighbor's clothes line), taken during the height of the creek flow, about an hour later and then the next morning.
the creek at its highest on Tuesday
about an hour later, it's already receding
Wednesday morning, flattened brush and grass the only evidence of the rushing water from Tuesday
Arroyo El Portezuelo lies dormant 99% of the year. Our neighbor's horses wander and munch on whatever they want back there, and there's always plenty with the grass and weeds growing several feet high. But every once in a blue moon, heavy rains in the low sierras just a few miles away are channeled through the creek and into the Santa Rosa River about a block away. Normally it doesn't rise this high, and we're just very thankful the wall was sufficient.
But as we contemplate putting up a new fence along the back, you can bet we're thinking about building that wall a little higher!