Possibly Pacific Forktail, but more likely Plains Forktail (Ischnura damula).
Plains Forktails (Ischnura damula)--four spots on thorax (before I artsied up the photo), and apparently Pacific Forktail does not occur at this location.
Likely ID, not 100% sure without in-hand examination.
We're hiring a UX Designer! Contact us if you're interested!