We're from the Midwest and don't really know the Northwestern Damsels, but everything we read seems to say you have 4 Enallagma there: Boreal, Marsh, Northern, and Tule. The first three have males that are essentially blue with small amounts of black on their abdomen. Tule is the only one that's mostly black with small amounts of blue on its abdomen. This is a young (or cold) specimen, so the pale violet has not yet turned blue, but it has a mostly black abdomen. So you seem to have a nice collection of male and female Tule images. Look for an animal that is mostly blue and you'll likely have one of the other three, though we don't know if anyone will know which!