Looks like a good adventure - a word of caution in case you didn’t know - there can be noxious fumes (methane etc) seeping into the channels, especially in this basin with its history of tar seeps and oil fields. When Public Works sends someone into the stormdrains they’re on a rig so they can be yanked out if they become unconscious. I don’t know the probability of it, but something to be aware of.