There is a water fountain at the bathrooms on the boundary between Howarth and Amnedel. It's in the parking lot, where the fire road takes you to the bottom of Rough Go/ Spring Creek/ Canyon trails
thanks. seems like all water sources are at trailheads.
There may still be the one at the old trailer office of Ranger Bobs by the gate halfway down on Channel. It was there last time I rolled thru. Other than that, as mentioned, the one at the end before going up WP Rich, the bathrooms at Spring Lake swim lagoon, or the ones up above Spring Lake/Canyon parking lot. If coming from Howarth Park, there's some in the camping/picnic areas before the boat launch parking lot or above in the camping spots before dropping to the overflow levy too.