1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02172040 BACK RIVER AT DUPONT INTAKE NR KITTREDGE,SC SOURCE AGENCY USGS STATE 45 COUNTY 015 LATITUDE 330349 LONGITUDE 0795726 NAD27 DRAINAGE AREA CONTRIBUTING DRAINAGE AREA DATUM -14.04 NGVD29 Date Processed: 2004-08-23 14:21 By mishealy APPROVED DD #24, ,PUBLISHED pH, water, unfiltered, field, standard units WATER YEAR OCTOBER 1981 TO SEPTEMBER 1982 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 7.7 7.7 7.3 6.8 7.2 7.1 --- --- --- --- --- --- 2 7.4 7.7 --- 6.8 7.2 7.1 --- --- --- --- --- --- 3 7.8 7.6 --- 6.9 7.1 7.0 --- --- --- --- --- --- 4 7.8 7.5 7.3 6.6 7.1 7.2 --- --- --- --- --- --- 5 7.7 7.4 7.3 6.5 7.1 7.1 --- --- --- --- --- --- 6 7.5 7.3 7.5 6.8 7.0 7.0 --- --- --- --- --- --- 7 7.4 7.5 7.5 6.6 7.1 7.0 --- --- --- --- --- --- 8 7.5 7.6 7.5 6.9 7.1 7.0 --- --- --- --- --- --- 9 7.5 7.6 7.6 7.1 7.0 7.1 --- --- --- --- --- --- 10 7.5 7.6 7.7 7.0 7.0 7.1 --- --- --- --- --- --- 11 7.4 7.6 7.7 7.4 7.0 7.0 --- --- --- --- --- --- 12 7.6 7.8 7.6 --- 7.0 7.0 --- --- --- --- --- --- 13 7.9 7.8 7.5 --- 6.9 7.0 --- --- --- --- --- --- 14 8.0 7.6 7.4 --- 6.8 6.9 --- --- --- --- --- --- 15 7.9 7.4 7.3 --- 6.8 7.0 --- --- --- --- --- --- 16 7.8 7.4 7.3 7.7 6.8 7.0 --- --- --- --- --- --- 17 7.6 7.2 7.6 7.5 6.8 6.9 --- --- --- --- --- --- 18 7.5 7.3 7.5 7.6 6.8 7.0 --- --- --- --- --- --- 19 7.4 7.3 7.5 7.5 6.8 6.9 --- --- --- --- --- --- 20 7.5 7.2 7.6 7.4 6.9 6.9 --- --- --- --- --- --- 21 7.6 7.3 7.6 7.3 7.0 7.0 --- --- --- --- --- --- 22 7.5 7.5 7.5 7.3 7.1 7.0 --- --- --- --- --- --- 23 7.5 7.5 7.5 7.3 7.2 7.0 --- --- --- --- --- --- 24 7.5 7.4 7.4 7.3 7.1 7.0 --- --- --- --- --- --- 25 7.6 7.4 7.4 7.4 7.1 6.9 --- --- --- --- --- --- 26 7.4 7.5 7.4 7.4 7.1 6.9 --- --- --- --- --- --- 27 7.5 7.4 7.4 7.5 7.1 6.9 --- --- --- --- --- --- 28 7.4 7.4 7.3 7.4 7.0 --- --- --- --- --- --- --- 29 7.6 7.6 7.2 7.4 --- --- --- --- --- --- --- --- 30 7.7 7.5 7.2 7.3 --- --- --- --- --- --- --- --- 31 7.7 --- 7.3 7.3 --- --- --- --- --- --- --- --- TOTAL 235.4 224.6 --- --- 196.2 --- --- --- --- --- --- --- MEAN 7.6 7.5 --- --- 7.0 --- --- --- --- --- --- --- MAX 8.0 7.8 --- --- 7.2 --- --- --- --- --- --- --- MIN 7.4 7.2 --- --- 6.8 --- --- --- --- --- --- --- 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02172040 BACK RIVER AT DUPONT INTAKE NR KITTREDGE,SC SOURCE AGENCY USGS STATE 45 COUNTY 015 LATITUDE 330349 LONGITUDE 0795726 NAD27 DRAINAGE AREA CONTRIBUTING DRAINAGE AREA DATUM -14.04 NGVD29 Date Processed: 2004-08-23 14:21 By mishealy APPROVED DD #24, ,PUBLISHED pH, water, unfiltered, field, standard units WATER YEAR OCTOBER 1986 TO SEPTEMBER 1987 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 7.5 7.2 7.2 7.4 7.1 6.6 6.5 7.5 --- 7.4 7.5 7.1 2 7.4 7.1 7.1 7.2 7.0 6.4 6.6 7.5 --- 7.4 7.5 7.1 3 7.2 7.1 7.1 7.3 7.0 6.4 6.7 7.4 --- 7.3 7.5 7.2 4 7.4 7.2 7.2 7.4 7.2 6.5 6.6 7.4 --- 7.3 7.5 7.2 5 7.5 7.1 7.3 7.5 7.2 6.7 6.7 7.3 --- 7.4 7.5 7.0 6 7.3 7.0 7.3 7.6 7.2 6.8 6.8 7.3 --- 7.4 7.6 6.7 7 6.3 7.1 7.4 7.5 7.0 6.8 6.8 7.2 --- 7.4 7.6 6.7 8 6.2 7.1 7.3 7.5 7.0 6.7 6.9 6.9 --- 7.5 7.5 6.7 9 6.1 7.1 7.3 7.5 7.1 6.6 7.0 6.9 --- 7.5 7.6 6.7 10 5.9 7.1 7.3 7.3 7.2 6.7 7.1 6.9 --- 7.4 7.6 6.8 11 5.7 7.2 7.2 7.1 7.1 7.0 7.0 --- --- 7.4 7.7 6.8 12 5.8 7.1 7.1 7.3 7.1 7.0 7.0 --- --- 7.4 7.7 6.7 13 6.2 7.2 7.0 7.4 7.1 7.0 7.1 --- --- 7.5 7.7 6.5 14 6.4 7.3 7.1 7.4 7.1 7.1 7.1 --- --- 7.6 7.7 7.0 15 6.2 7.4 7.1 7.4 7.1 7.0 7.1 --- --- 7.6 7.6 6.9 16 6.2 7.3 7.1 7.3 7.0 7.0 --- --- --- 7.6 7.6 7.0 17 6.4 7.3 7.2 7.1 6.9 7.0 7.4 --- --- 7.6 7.6 6.8 18 6.6 7.3 7.2 7.0 6.8 7.0 7.4 --- 7.2 7.5 7.6 6.9 19 6.8 7.3 7.2 6.8 6.9 6.8 7.4 --- 7.2 7.4 7.6 6.9 20 6.9 7.3 7.2 6.8 7.0 6.7 7.5 --- 7.1 7.4 7.4 6.8 21 7.0 7.1 7.3 7.1 7.0 6.6 7.5 --- 7.1 7.5 7.4 6.8 22 7.2 7.2 7.4 6.8 7.0 6.8 7.5 --- 7.1 7.6 7.2 7.2 23 7.1 7.3 7.4 6.4 6.7 6.9 7.5 --- 7.2 7.6 7.2 7.4 24 7.0 7.2 7.2 6.6 6.8 6.9 7.5 --- 7.2 7.6 7.2 7.6 25 7.0 7.3 7.2 6.6 6.8 6.8 7.4 --- 7.3 7.4 7.2 7.7 26 7.3 7.2 7.2 6.7 6.8 6.6 7.4 --- 7.2 7.4 7.6 7.6 27 7.1 7.2 7.2 6.8 6.8 6.4 7.3 --- 7.2 7.5 7.8 7.6 28 7.0 7.2 7.3 6.9 6.7 6.4 7.3 --- 7.4 7.5 7.7 7.6 29 7.1 7.2 7.4 7.1 --- 6.4 7.3 --- 7.5 7.5 7.7 7.4 30 7.3 7.2 7.4 7.0 --- 6.5 7.4 --- 7.5 7.5 7.6 7.5 31 7.3 --- 7.4 7.0 --- 6.4 --- --- --- 7.5 7.5 --- TOTAL 210.4 215.9 224.3 220.8 195.7 208.5 --- --- --- 231.6 233.7 211.9 MEAN 6.8 7.2 7.2 7.1 7.0 6.7 --- --- --- 7.5 7.5 7.1 MAX 7.5 7.4 7.4 7.6 7.2 7.1 --- --- --- 7.6 7.8 7.7 MIN 5.7 7.0 7.0 6.4 6.7 6.4 --- --- --- 7.3 7.2 6.5