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We did not collect young smallmouth bass in drift net samples in 2002, but captured a few in 2003 (N = 6, 10 to 24 mm TL), and greater numbers in 2004 (N = 93, 8 to 28 mm TL, Bestgen et al. 2006). In 2005 and 2005, 16 small smallmouth bass were captured in drift net samples. In 2003, most fish of all species (60%) were captured the day of and the day following two turbidity events, one on 22 July and one on 6 August. The 22 July 2003 event was especially severe, as water clarity was reduced to zero and silt loads were extremely high from runoff in the Vermillion Creek drainage basin. Most bluehead sucker (53%) and flannelmouth sucker (66%) captured that year were taken during these events, as were most smallmouth bass (4 of 6) and sand shiner (74%). About 34% of red shiner captured that year were taken during these two events. We noted relatively high mortality of those fish in drift net samples collected on 22 July; usually fish collected in drift nets are alive upon capture and larger suckers present in mid- to late-July are noticeable. Thus, loss of visibility and outright mortality from sediment loads may be factors associated with increased transport rates. A similar high turbidity and increased flow event occurred on 17 July 2004, when a total of 532 fish of all species (29% of all captured in 2004) were captured. All 2004 smallmouth bass specimens were captured in the period 17 to 25 July, and 87 of 93 (94%) on 17 July. Flow stage dropped 7 to 8 cm the next day, but turbidity remained high for several days. On 25 July, a similar turbidity event occurred, and only 5 fish were captured (three flannelmouth sucker, one white sucker, and one smallmouth bass). A similar situation occurred in 1994: most fish captured that year (N = 223, 72.6%) were taken on 7 July when water turbidity increased dramatically from thunderstorm runoff. Spatial and temporal patterns of distribution, abundance, and size-structure of selected non-native and raative species, from 1994 to 1996, 2002 to 2004, and 2005-2006 periods.-This section presents overall patterns of distribution, abundance, and size structure for selected species and examines changes between study periods 1994 to 1996, 2002 to 2004, and 2005 to 2006. We present data only for selected, potentially problematic, non-native species and some common native taxa. We use mostly electrofishing data to explore these trends because most of the taxa considered are large-bodied and are not commonly captured by other sampling gears. 24