• Lake Erie-Lake St. Clair Basin (LERI) Study Home Page (1994-2003: Indiana, Michigan, New York, Ohio, and Pennsylvania)

• Great and Little Miami River Basin (MIAM) Study Home Page (1997-2001: Indiana and Ohio)

• Upper Illinois River Basin (UIRB) Study Home Page (1997-Present: Illinois, Indiana, and Wisconsin)

• White River Basin (WHIT) Study Home Page (1993-2001: Indiana)

• White River and Great and Little Miami River Basins (WHMI) Study Home Page (2001 to present: Indiana, Ohio) 

• National Water Quality Assessment Program Home Page

USGS Indiana Home Page