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Fish Reports

2001 Report

La Grange Pool, Illinois River 2001 Fish Collection Summary

This report is a bullet summary of the Long Term Resource Monitoring Program's (LTRMP) fish collection efforts conducted by the Havana Field Station on La Grange Pool, Illinois River during 2001. Information on changes in fish catch over all years can be obtained from the Graphical Fish Database Browser.

• 552 fish collections were made in La Grange Pool during 2001 using 10
  gear types (Table 2.6).
  
  

• All gear allocations were completed among strata for all three sampling periods (Table 2.6; Figure 1.6).
  
  

• Of the 552 fish collections, 420 were from randomly selected sites. One hundred-thirty-one collections were made at fixed sites.
  
  

• Two tailwater sites were sampled, La Grange Lock and Dam and Peoria Lock and Dam; data from both tailwater sites were combined for analysis (Table 2.6).
  
  

• Side channel border and main channel border, unstructured received the most sampling effort (Table 2.6).
  
  

• 169,359 fish representing 71species and 4 hybrids (Table 3.6). This was the highest annual catch for LTRMP on La Grange Pool.
  
  

• Historical fish distribution records for the Illinois River (Smith 1979) document 115 fish species from La Grange Pool.
  
  

• There were no new species collected from this reach in 2001 (Table 3.6).
  
  
  
• Throughout monitoring of La Grange Pool by LTRMP, we have collected a total of 940,647 fish, consisting of 84 species and 10 hybrids.
  
  

• Mean catch-per-unit-effort and standard error for fish collected by gears using stratified random (Tables 4.6-12.6) and fixed-site sampling (Tables 14.6-21.6) for each stratum are shown.
  
  
  
• Length distributions for selected species of fish are shown in Figures 2.6 to 19.6.