Upper Midwest Environmental Sciences Center
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.
Content manager: Jennie Sauer
Page Last Modified: April 17, 2018