Just fished the lower sections of Rocky Ford this last Friday (from the Hwy bridge down to the lower access at the spillway. Didn’t see one trout, but a ton of carp. My buddy and I caught several before calling it a day. Wonder how they all got in there and what that’s going to mean for the future of the fishery. Seems like they’re going to easily take over the creek.
The dam you're talking about was constructed to serve two purposes (if memory serves correctly):
1. A sediment basin to reduce nitrates/phosphates into Moses Lake, and
2. A barrier to keep carp out of Rocky Ford.
I think the state treated RF (rotenone) at the completion of the dam.
The creek downstream of the highway has never (in my opinion) been the best trout water; summer temperatures down there are much higher than the spring fed source. Maybe low DO levels then as well.
What was in stream vegetation like?