Organisms were collected on jumbo multi-plate artificial substrates placed in the East (NPS1) and West (NPS2) Lagoons for six weeks.
They were identified simply as Amphipoda at FWS5, and to Hyallela (most likely Hyallela azteca) at NPS1, NPS2, and IDEM1.
Caecidotea (Asellus) was identified at both NPS1 and 2, and Lirceus was identified at NPS1.
Crayfish (Family Cambaridae) were identified at two sites, NPS1 in the Lagoons reach and FWS3 in the USX reach (Fig.
Mayflies were found at NPS1 and 2 in the Lagoons reach and IDEM8 in the Federal Dredging Project reach (Fig.
Dragonfly larvae were found at NPS1 and 2 in the Lagoons reach; FWS1, 3, 4, and 5 in the USX reach; and IDEM7 in the Lake George reach (Fig.
The Family Coenagrionidae (narrow-winged damselflies) was identified to family at FWS3, 4, and 5; Argia at IDEM1, 3, 4, 5, and 7; Chromagrion at NPS1 and 2; and Ischnura at NPS1 and 2 and IDEM1, 2, 3, 5, 7, and 8.
Caddisflies were found at NPS1 and 2 in the Lagoons reach, TAMS2 and IDEM3 in the Gary Sanitary District and DuPont reaches, IDEM6 in the East Chicago Sanitary District reach, IDEM7 in the Lake George reach, and IDEM8 in the Federal Dredging Project reach (Fig.
Water bugs were identified at NPS1 and 2 in the Lagoons reach and FWS5 in the USX reach (Fig.