Index of shapefiles:

Aquifer systems
sj_br_aq.shp		St. Joseph River Basin Bedrock Aquifer Systems
sj_unc_aq.shp		St. Joseph River Basin Unconsolidated Aquifer Systems
kk_br_aq.shp		Kankakee River Basin Bedrock Aquifer Systems
kk_unc_aq.shp		Kankakee River Basin Unconsolidated Aquifer Systems
lm_br_aq.shp		Lake Michigan Region Bedrock Aquifer Systems
lm_unc_aq.shp		Lake Michigan Region Unconsolidated Aquifer Systems
mu_br_aq.shp		Maumee River Basin Bedrock Aquifer Systems
mu_unc_aq.shp		Maumee River Basin Unconsolidated Aquifer Systems
north_br_aq.shp		Northern Tier (SJ,KK,LM,MU) Bedrock Aquifer Systems
north_unc_aq.shp	Northern Tier (SJ,KK,LM,MU) Unconsolidated Aquifer Systems
ww_br_aq.shp		Whitewater River Basin Bedrock Aquifer Systems
ww_unc_aq.shp		Whitewater River Basin Unconsolidated Aquifer Systems
wfwr_unc_aq.shp		West Fork White River Basin Unconsolidated Aquifer Systems

Other:
state.shp		County boundary shapefile for Indiana
basin_boundaries.shp	Water-management river basin boundaries