Biological assessment and streambed-sediment chemistry of streams in the Indianapolis metropolitan area, Indiana, 2003–2008

Abstract

Number of benthic invertebrate species identified at site 12

A summary of the benthic-invertebrate and fish-community data from streams in the Indianapolis metropolitan area, Indiana, 1981–2012

“…The results of these studies were presented by Crawford and others (1992), Renn (1998), Voelker and Renn (2000), and Voelker (2004and Voelker ( , 2012and Voelker ( , 2014. Study sites remained consistent throughout the entire period with the exception of the most upstream site on the White River, which was originally sampled at Westfield Boulevard (1981-87), but was moved to the nearby Nora site for sampling during 1994-2012.…”

“…Initially, three sites were sampled by Crawford and others (1992), then 21 sites by Renn (1998), 12 sites by Voelker (2004), and lastly, 13 by Voelker (2012Voelker ( , 2014. These sites were selected in coordination with the Indianapolis DPW, which was responsible for monthly surface-water sampling at or near those sites.…”

“…These studies all included benthic invertebrates collected at least yearly during 1981-87, 1994-96, 1999-2001, and 2003-12. Fish-community assessments were completed during 1999-2001, 2006, 2008, 2010, and 2012. …”

“…In the 1990s, a second study was begun to assess biological communities in the White River and selected tributaries relative to CSO issues that the City was assessing (Renn, 1998;Voelker and Renn, 2000). During 1999-2001, a third study was conducted that included benthic invertebrates and fish communities (Voelker, 2004). During 2003-4, the USGS continued to collect benthic-invertebrate samples; during 2005-12, comparative studies remained in place to collect benthic-invertebrate and fish-community information (Voelker, 2012(Voelker, , 2014.…”

“…During 1999-2001, a third study was conducted that included benthic invertebrates and fish communities (Voelker, 2004). During 2003-4, the USGS continued to collect benthic-invertebrate samples; during 2005-12, comparative studies remained in place to collect benthic-invertebrate and fish-community information (Voelker, 2012(Voelker, , 2014. While the biological conditions of these streams cannot be solely attributed directly to effects from CSOs, the integrity of the biological communities do reflect overall effects from all sources entering the receiving waters.…”