Sioux Snaketail (Ophiogomphus smithi)
Photographed
a couple

Cherry-faced Meadowhawk (Sympetrum internum)
Netted and released
one female

Twelve-spotted Skimmer (Libellula pulchella)
Observed
one

Ebony Jewelwing (Calopteryx maculata)
Photographed
many teneral

River Jewelwing (Calopteryx aequabilis)
Observed
two