Blue Dasher, a female.
Blue Dasher, male (some have a bluer sides to the thorax, some are striped like this one)
Cardinal Meadowhawk. The red is almost blinding in good light.
Common Whitetail. A very impressive and fast flyer.
Pacific Forktail, typical female. This is a damselfly, a different suborder from the dragonflies.
Pacific Forktail – same as the previous; females are quite variable, and I needed the help of Jim Johnson to ID this one.
Tule Bluet, one of the most abundant damselflies in the Willamette Valley
Western Pondhawk, similar to the Blue Dasher but bit heftier, without the white face, and no rusty basal spot on the wings
Widow Skimmer, a more southerly species that we see a lot here in Arizona