Swamp Darner (Epiaeschna heros)
Observed
1 male flying overhead for about 5 minutes. Unable to net. Observed by two people and based on shape and size, 100% confident in ID.

Sioux Snaketail (Ophiogomphus smithi)
Photographed
5

Twin-spotted Spiketail (Cordulegaster maculata)
Observed
4

Common Baskettail (Epitheca cynosura)
Observed
1

Common Whitetail (Plathemis lydia)
Observed
several

Dot-tailed Whiteface (Leucorrhinia intacta)
Observed
1

Four-spotted Skimmer (Libellula quadrimaculata)
Observed
2

Twelve-spotted Skimmer (Libellula pulchella)
Observed
2

Ebony Jewelwing (Calopteryx maculata)
Observed
several

River Jewelwing (Calopteryx aequabilis)
Observed
several

Eastern Forktail (Ischnura verticalis)
Observed
several