USGS Home
Contact USGS
Search USGS

Fish Reports

2000 Report

La Grange Pool, Illinois River 2000 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 2000. Information on changes in fish catch over all years can be obtained from the Graphical Fish Database Browser.

• 544 fish collections were made in La Grange Pool during 2000 using 10 gear types (Table 2.6).
  
  
• Gear allocations among strata varied for all three sampling periods because of low and high water extremes (Table 2.6; Figure 1.6).
  
  
• Of the 544 fish collections, 413 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).
  
  
• 90,544 fish were collected representing 62 species and 3 hybrids (Table 3.6).
  
  
• Fish distribution records for the Illinois River (Smith 1979) document 115 fish species from La Grange Pool.
  
  
• The LTRMP species total for La Grange Pool before the 2000 season was 83; a shovelnose sturgeon was collected for the first time during 2000 (Table 3.6).
  
  
• 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.