Appendix 5. Water quality data for Big River basin streams taken from USGS gaging stations (USGS, 1993).
Station Parameter Sample Size Max Min. Mean
RICHWOODS at Big River (1986 to present) Specific conductance (us/cm) 51 598 194 419
pH 51 8.5 7.3 8.0
Oxygen, dissolved (mg/l) 44 17.0 5.6 10.0
COD (mg/l) 42 126 63 91
Fecal coliform (c/100ml) 43 5500 1 412
Total hardness (mg/l) 22 310 170 247
NO2+NO3, total (mg/l) 43 0.9 -- 0.3
Nitrogen, ammonia (mg/l) 42 0.11 -- 0.03
Phosphorus, total (mg/l) 43 0.18 0.01 0.04
Copper, total (ug/l) 22 4.0 -- 2.0
Copper, dissolved (ug/l) 10 6.0 1 2.7
Iron, total (ug/l) 15 790 30 255
Iron, dissolved (ug/l) 10 100 4 23
Lead, total (ug/l) 15 89 8 31
Lead, dissolved (ug/l) 32 9.0 -- 3.7
Zinc, dissolved (ug/l) 10 47 4 20
IRONDALE at Big River (1986) Specific conductance (us/cm) 7 378 245 305
pH 7 8.1 6.3 7.5
Hardness, total (mg/l) 7 210 130 167
Alkalinity (mg/l) 7 209 109 152
Copper, dissolved (ug/l) 7 -- -- --
Iron, dissolved (ug/l) 7 12.0 4.0 7.4
Lead dissolved, (ug/l) 7 -- -- --
St. Francois State Park at Coonville Creek (1992 to present) Specific conductance (us/cm) 6 420 155 344
pH 6 8.1 7.3 7.9
Oxygen , dissolved 6 13.8 8.4 10.9
COD (mg/l) 6 36 -- <10
Fecal coliform (c/100ml) 6 3600 34 861
Hardness, total (mg.l) 3 270 190 233
NO2+NO3, total (mg/l) 6 0.13 0.04 0.07
Nitrogen, ammonia (mg/l) 6 0.03 <0.01 0.02
Phosphorus, total (mg/l) 6 0.04 <0.01 0.02
Copper, total (ug/l) 3 1.0 <1.0 <1.0
Copper, dissolved (ug/l) 7 1.0 1.0 1.0
Iron, total (ug/l) 3 39 7 20
Iron, dissloved (ug/l) 7 93 7 26
Lead, total (ug/l) 3 27 5 15
Lead, dissolved (ug/l) 3 3.0 3.0 3.0
Zinc, dissolved (ug/l) 7 110 70 93

--below detection

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