These data are from two sediment coring events in Big Spring Creek, WI (wbic=176400). The first sediment coring event took place on June 10, 2005 where 19 different coring stations were sampled in both the floodplain and channel of the Big Spring Reservoir (Big Spring Pond). The second coring event took place on June 24, 2005 when channel cores were taken in the channel of Big Spring Creek at 12 different coring stations. In total 31 unique coring stations were sampled. These data present the results of hydrometer and seive analysis.