June 1, 2018 — Rock County
Rock River Lagoon. Diversion of the Rock River that forms an elongate, shallow lagoon in Riverside Park, Beloit. The lagoon is about 110 m wide (E-W) and 225 m long (N-S), has some grasses/sedges growing around the edge, and is aerated with a fountain. Located on the west of Riverside Drive, about 0.5 km north of the intersection with White Avenue.
Several seen resting on the sidewalk
One seen on rock along lagoon
Black Saddlebags (Tramea lacerata)
Saw several patrolling the shorelines
Saw several. Submitted as familiar, changed to tule by RBD.