01495naa a2200229 a 450000100080000000500110000800800410001910000200006024500560008026000090013652008990014565000090104465000180105365000240107165000100109565000100110565000230111565300120113865300250115070000170117577300730119217895822017-04-03       1993    bl ---       0--  u    #d1 aLARIMORE, R. W.  aEnvironmental changes in the Kaskaskia River Basin.  c1993  aThe Kaskaskia River originates in east-central Illinois and flows southwesterly for about 475 km, where it joins the Mississippi River 111 km above Chester, Illinois. The river and its tributaries have been subjected to numerous physical modification, including drainage and levee projects, drekging and straightening of tributary streams, channelization of the lower 80 for navigation, and construction of two mainstem flood control and waters reservoirs. The diversity of the river's fish and mussel population is evident by the 113 native and 12 nonnative fish and 42 mussel species collected since the early 1900's. We present information on the fish present, sport and commercial fishing, mussels and mussel harvest, benthos, plankton, and periphyton. Additional information is provided relative to the river's geology, hydrology, and water quality before and after physical modifications.  afish  awater quality  aBacia Hidrográfica  aPeixe  aPesca  aQualidade da Água  aFishery  aHidrographical basin1 aFRITZ, A. W.  tBiological Report - US Fish Wildlife Servicegv.19, p.210-240, 1993.