Table Wq06. Fish kill and water pollution investigations within the South Grand River Watershed in Missouri since 1990 (MDC 2003c).
Date County Stream/Water Body Cause Fish Kill Damage
1990 Cass Tributary of East Branch of South Grand R. Suspected quarry fines No > 1/2 mile
1990 Henry Deepwater Creek (Montrose Lake) (UPDATE Low dissolved oxygen (inadequate flow) Yes 0.1 miles
1991 Henry Coal Creek Anhydrous ammonia No 0 miles
1991 Cass West Fork of East Creek Unknown Yes Unknown
1992 Cass Poney Creek Crude oil No 1 mile
1992 Cass Town Creek/Muddy Creek Raw/partially treated sewage Yes 1.25/2.75 miles
1992 Cass Duncan Branch Raw sewage Yes 1/4 mile
1992 Cass East Creek Natural gas No N/A
1992 Cass Middle Big Creek Raw sewage Yes <1.0 miles
1992 Cass Tributary to Town Creek Unknown No Unknown
1992 Benton Barkers Creek (tributary to) Hog manure No 3/4 miles
1993 Cass Middle Big Creek Raw/partially treated sewage Yes 1/4 mile
1994 Henry Deepwater Creek (Montrose Lake) Low dissolved oxygen (inadequate flow Yes 1/4 mile
1996 Cass Middle Big Creek/Big Creek Elevated ammonia Yes 6.9/26.4 miles
1996 Henry Deepwater Creek Dam operation; stranding & abrasion Yes 0.5 miles
1996 Cass Middle Big Creek Low dissolved oxygen/elevated ammonia Yes 4.1 miles
1996 Benton Barker's Creek Hog manure No 3/4 mile
1996 Cass Middle Big Creek Dewatering of stream Yes 0.1 mile
1996 Cass Town Creek Soap No >1/4 mile
1997 Johnson Lost Creek Poorly treated sewage effluent No 1 1/2 miles
1997 Johnson Little Walnut Creek Milk and diesel fuel No <1/4 mile
1997 Henry Town Creek Swine waste nutrients and sediment No 1/4+ mile
1997 Cass Coldwater Creek Crude Oil No 0.1 mile
1997 Henry Deepwater Creek (Montrose Dam) Low DO caused by broken siphon tube Yes 1 mile
1997 Cass South Fork Grand River Diesel Fuel No  
1997 St. Clair Monegaw Creek Poorly treated sewage No 1.25 miles
1998 Henry Tributary to Rose Creek Dairy manure No 1.2+ miles
1998 Henry Tebo Creek Tributary Domestic sewage. No <1 mile
1998 Cass East Branch of South Grand River Tributary Suspected - sewage Yes 6 miles\1.5 acres
1999 Henry Deepwater Creek Dewatering No 1.5 miles
2000 Henry Sand Creek Roundup Concentrate Yes 0.1 miles

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