Little guy, 2-3 inches including tail
corolla 3 mm long. Anthers 1 mm long.
Lots right outside the active channel, but this is further down the channel alongside a lot of blackberry and closer up. Once the redwoods begin as a grove, there are no more (well, one small) walnut present.
Note mantid fly on pedicel.
Aquatic nymph. There is water here still! Where is nearby spring?
With California fescue