1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02175445 SAVANNAH CREEK AT EHRHARDT, SC SOURCE AGENCY USGS STATE 45 COUNTY 009 LATITUDE 330512 LONGITUDE 0810155 NAD83 DRAINAGE AREA 2.20* CONTRIBUTING DRAINAGE AREA DATUM 113 NGVD29 Date Processed: 2005-04-11 11:59 By mishealy APPROVED DD #4, PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 --- --- --- --- --- --- 10 0.77 0.43 0.60 0.86 4.0 2 --- --- --- --- --- --- 7.5 0.76 0.41 0.81 0.72 1.9 3 --- --- --- --- --- --- 6.4 0.71 0.34 e4.6 0.61 e4.0 4 --- --- --- --- --- --- 5.8 1.1 0.34 e12 0.56 8.5 5 --- --- --- --- --- --- 4.7 0.97 0.28 2.8 0.53 3.6 6 --- --- --- --- --- --- 4.2 0.71 0.26 1.6 0.53 2.8 7 --- --- --- --- --- --- 3.7 0.63 0.25 1.1 0.46 2.1 8 --- --- --- --- --- --- 3.1 0.66 0.30 0.93 0.41 1.4 9 --- --- --- --- --- --- 2.7 0.68 0.35 0.87 0.36 3.6 10 --- --- --- --- --- --- 2.2 0.68 0.34 0.74 e0.70 5.0 11 --- --- --- --- --- --- 2.0 0.63 0.30 0.65 e4.8 5.1 12 --- --- --- --- --- --- 1.9 0.61 e2.5 0.63 0.93 4.8 13 --- --- --- --- --- --- 1.7 0.64 9.0 e0.74 0.59 2.4 14 --- --- --- --- --- --- 1.7 0.59 2.3 e0.67 3.9 2.0 15 --- --- --- --- --- --- 2.2 0.51 0.91 e0.56 4.5 e1.5 16 --- --- --- --- --- --- 2.1 0.46 0.66 e0.46 1.3 e1.2 17 --- --- --- --- --- --- 1.5 0.46 0.61 0.39 0.83 e1.1 18 --- --- --- --- --- --- 1.2 0.44 0.42 0.37 1.3 e1.2 19 --- --- --- --- --- --- 1.2 0.40 0.43 0.33 9.5 1.1 20 --- --- --- --- --- --- 1.5 0.42 0.36 0.62 11 2.4 21 --- --- --- --- --- --- 1.7 0.52 0.33 0.50 6.1 1.8 22 --- --- --- --- --- --- 1.1 0.41 0.33 0.33 2.8 1.3 23 --- --- --- --- --- --- 0.99 0.57 1.5 0.43 2.1 1.2 24 --- --- --- --- --- --- 1.0 0.43 1.5 0.74 1.7 6.5 25 --- --- --- --- --- --- 1.6 0.38 2.4 0.55 1.4 3.7 26 --- --- --- --- --- --- 1.3 0.41 1.5 0.41 1.3 2.6 27 --- --- --- --- --- e4.5 0.99 0.38 0.78 e1.6 1.2 2.1 28 --- --- --- --- --- 4.1 0.89 0.35 0.72 e21 1.1 1.7 29 --- --- --- --- --- e14 0.83 2.1 0.68 3.5 1.0 1.3 30 --- --- --- --- --- e17 0.80 1.1 0.58 1.8 1.1 1.1 31 --- --- --- --- --- 13 --- 0.55 --- 1.1 1.1 --- TOTAL --- --- --- --- --- --- 78.50 20.03 31.11 63.43 65.29 83.0 MEAN --- --- --- --- --- --- 2.62 0.65 1.04 2.05 2.11 2.77 MAX --- --- --- --- --- -- 10 2.1 9.0 21 11 8.5 MIN --- --- --- --- --- -- 0.80 0.35 0.25 0.33 0.36 1.1 CFSM --- --- --- --- --- --- 1.19 0.29 0.47 0.93 0.96 1.26 IN. --- --- --- --- --- --- 1.33 0.34 0.53 1.07 1.10 1.40 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 2001 - 2001, BY WATER YEAR (WY) MEAN --- --- --- --- --- --- 2.62 0.65 1.04 2.05 2.11 2.77 MAX --- --- --- --- --- --- 2.62 0.65 1.04 2.05 2.11 2.77 (WY) --- --- --- --- --- --- 2001 2001 2001 2001 2001 2001 MIN --- --- --- --- --- --- 2.62 0.65 1.04 2.05 2.11 2.77 (WY) --- --- --- --- --- --- 2001 2001 2001 2001 2001 2001 e Estimated 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02175445 SAVANNAH CREEK AT EHRHARDT, SC SOURCE AGENCY USGS STATE 45 COUNTY 009 LATITUDE 330512 LONGITUDE 0810155 NAD83 DRAINAGE AREA 2.20* CONTRIBUTING DRAINAGE AREA DATUM 113 NGVD29 Date Processed: 2005-04-11 11:59 By mishealy APPROVED DD #4, PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 1.0 0.41 0.48 0.63 0.72 0.68 1.8 0.78 0.22 0.16 0.37 0.64 2 0.96 0.42 0.41 0.93 0.61 5.5 1.3 0.38 0.19 0.33 0.23 0.54 3 0.98 0.49 0.36 1.3 0.60 4.0 0.86 0.50 0.18 0.35 0.18 0.82 4 0.92 0.47 0.35 1.2 0.59 2.1 0.74 0.91 0.19 0.13 0.17 0.38 5 0.94 0.46 0.32 0.96 0.57 1.3 0.66 0.52 0.19 0.11 0.17 0.29 6 1.8 0.47 0.29 1.5 1.3 2.1 0.55 0.42 0.21 0.68 0.15 0.27 7 1.2 0.47 0.31 1.1 8.0 1.2 0.52 0.38 0.30 0.48 0.17 0.26 8 0.44 0.47 0.33 0.90 1.9 1.1 0.52 0.33 0.27 0.17 0.32 0.23 9 0.34 0.48 0.36 0.84 1.4 1.2 1.3 0.31 0.24 0.31 0.13 0.23 10 0.33 0.54 0.95 0.83 1.2 1.3 0.89 0.29 0.20 0.31 0.12 0.21 11 0.34 0.53 1.8 0.80 1.0 1.2 0.88 0.28 0.18 0.26 0.12 0.19 12 0.33 0.55 1.1 3.0 0.92 1.2 0.72 0.27 0.18 0.39 0.12 0.20 13 0.31 0.57 0.90 4.8 1.3 1.4 0.84 0.80 0.16 0.34 0.12 0.23 14 0.31 0.61 0.87 1.7 1.2 1.0 1.7 0.47 0.15 0.31 1.3 0.27 15 0.27 0.62 0.83 2.0 0.82 0.92 1.2 0.31 0.15 0.21 0.52 0.70 16 0.27 0.59 0.77 0.98 0.79 0.85 0.67 0.28 0.14 0.16 0.26 0.46 17 0.21 0.60 0.76 1.4 0.77 1.2 0.61 0.28 0.14 0.14 0.22 0.30 18 0.24 0.67 0.81 0.91 0.74 1.0 0.49 1.3 0.16 0.13 0.23 0.33 19 0.27 0.70 0.76 1.3 0.75 0.87 0.44 0.69 0.16 0.13 4.3 0.39 20 0.22 0.73 0.87 1.0 1.0 0.81 0.51 0.38 0.16 0.12 7.4 0.29 21 0.23 0.72 0.84 0.81 1.1 1.3 0.42 0.46 0.19 0.21 0.61 0.25 22 0.26 0.70 0.80 1.0 0.87 0.97 0.55 0.35 0.31 0.76 0.39 0.21 23 0.28 0.76 0.83 0.84 0.73 0.75 0.39 0.30 0.28 0.33 0.32 0.20 24 0.38 0.79 0.76 0.79 0.69 0.72 0.33 0.28 0.23 0.26 0.28 0.22 25 0.34 0.68 0.80 0.99 1.4 0.73 0.38 0.34 1.2 0.21 5.0 0.27 26 0.27 0.61 0.71 0.80 0.81 1.3 0.36 0.27 0.53 0.22 1.7 3.6 27 0.29 0.53 0.60 0.71 0.71 2.4 0.43 0.23 0.28 0.23 0.75 0.64 28 0.30 0.54 0.72 0.77 0.67 0.96 0.43 0.22 0.20 0.18 3.8 0.45 29 0.33 0.61 0.82 0.69 --- 0.82 0.33 0.22 0.18 0.16 0.74 0.35 30 0.34 0.54 0.68 0.65 --- 1.0 0.33 0.26 0.17 0.14 1.2 0.31 31 0.33 --- 0.65 0.70 --- 1.3 --- 0.25 --- 0.20 0.85 --- TOTAL 15.03 17.33 21.84 36.83 33.16 43.18 21.15 13.06 7.34 8.12 32.24 13.73 MEAN 0.48 0.58 0.70 1.19 1.18 1.39 0.70 0.42 0.24 0.26 1.04 0.46 MAX 1.8 0.79 1.8 4.8 8.0 5.5 1.8 1.3 1.2 0.76 7.4 3.6 MIN 0.21 0.41 0.29 0.63 0.57 0.68 0.33 0.22 0.14 0.11 0.12 0.19 CFSM 0.22 0.26 0.32 0.54 0.54 0.63 0.32 0.19 0.11 0.12 0.47 0.21 IN. 0.25 0.29 0.37 0.62 0.56 0.73 0.36 0.22 0.12 0.14 0.55 0.23 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 2001 - 2002, BY WATER YEAR (WY) MEAN 0.48 0.58 0.70 1.19 1.18 1.39 1.66 0.53 0.64 1.15 1.57 1.61 MAX 0.48 0.58 0.70 1.19 1.18 1.39 2.62 0.65 1.04 2.05 2.11 2.77 (WY) 2002 2002 2002 2002 2002 2002 2001 2001 2001 2001 2001 2001 MIN 0.48 0.58 0.70 1.19 1.18 1.39 0.71 0.42 0.24 0.26 1.04 0.46 (WY) 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 SUMMARY STATISTICS FOR 2002 WATER YEAR WATER YEARS 2001 - 2002 ANNUAL TOTAL 263.01 ANNUAL MEAN 0.72 0.72 HIGHEST ANNUAL MEAN 0.72 2002 LOWEST ANNUAL MEAN 0.72 2002 HIGHEST DAILY MEAN 8.0 Feb 7 21 Jul 28 2001 LOWEST DAILY MEAN 0.11 Jul 5 0.11 Jul 5 2002 ANNUAL SEVEN-DAY MINIMUM 0.15 Jun 13 0.15 Jun 13 2002 MAXIMUM PEAK FLOW 31 Aug 19 31 Aug 19 2002 MAXIMUM PEAK STAGE 2.45 Aug 19 2.76 Jul 27 2001 ANNUAL RUNOFF (CFSM) 0.328 0.328 ANNUAL RUNOFF (INCHES) 4.45 4.45 10 PERCENT EXCEEDS 1.3 1.3 50 PERCENT EXCEEDS 0.52 0.52 90 PERCENT EXCEEDS 0.19 0.19 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02175445 SAVANNAH CREEK AT EHRHARDT, SC SOURCE AGENCY USGS STATE 45 COUNTY 009 LATITUDE 330512 LONGITUDE 0810155 NAD83 DRAINAGE AREA 2.20* CONTRIBUTING DRAINAGE AREA DATUM 113 NGVD29 Date Processed: 2005-04-11 11:59 By mishealy APPROVED DD #4, PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 0.27 0.32 0.76 2.5 1.4 6.6 12 2.7 2.4 6.8 8.4 4.9 2 0.24 0.30 0.77 2.1 1.4 12 8.1 2.5 1.8 54 11 6.5 3 0.22 0.29 0.89 1.8 1.2 6.6 6.0 3.2 15 44 14 4.3 4 0.21 0.38 0.99 1.6 1.4 5.0 5.1 2.6 16 24 15 4.4 5 0.19 0.40 1.8 1.7 1.3 4.5 4.7 2.3 6.8 15 11 6.9 6 0.17 2.9 1.3 1.6 1.3 5.2 4.4 3.2 5.1 9.7 17 4.9 7 0.18 0.61 0.96 1.8 4.2 13 7.8 4.3 7.9 7.3 47 5.5 8 0.60 0.40 0.98 1.9 1.8 10 11 2.7 17 5.9 48 10 9 0.42 0.38 0.99 1.7 1.6 7.3 17 2.5 14 4.5 50 8.7 10 0.50 0.76 1.6 1.6 1.7 5.8 47 1.9 7.5 3.7 e51 5.9 11 1.9 3.9 2.0 1.5 1.4 4.8 41 1.5 14 4.5 96 4.5 12 0.43 3.9 1.3 1.4 1.3 4.4 26 1.3 22 5.3 49 3.7 13 0.35 1.5 4.8 1.4 1.3 5.5 17 1.1 37 9.3 33 3.3 14 0.58 0.86 2.2 2.2 1.2 4.9 12 1.1 28 13 23 2.9 15 0.52 0.79 1.2 1.5 1.2 e45 9.6 3.5 18 7.1 17 2.6 16 0.78 3.9 1.4 1.4 3.4 73 8.0 15 12 4.8 16 2.5 17 0.39 3.3 1.0 1.5 3.5 41 6.8 20 16 7.1 20 2.1 18 0.29 1.2 0.91 1.3 2.2 43 8.6 9.1 11 14 14 1.6 19 0.27 0.76 0.95 1.3 1.9 33 7.9 15 7.6 9.3 11 1.5 20 0.26 0.65 2.3 1.3 2.5 76 6.9 9.6 5.6 9.5 11 1.4 21 0.30 0.64 1.5 1.3 1.9 72 6.0 6.4 4.3 7.7 15 1.3 22 0.36 0.60 1.1 3.5 3.0 41 5.6 9.8 3.4 13 11 1.7 23 0.53 0.55 2.2 1.9 2.9 29 4.4 37 2.7 30 8.1 2.4 24 0.45 0.83 11 1.4 2.4 19 3.9 25 2.3 25 9.2 1.8 25 0.33 0.69 4.6 1.7 1.9 7.9 12 16 1.9 17 17 1.6 26 0.31 0.50 2.5 1.6 1.8 7.4 10 14 1.7 16 10 1.4 27 0.28 0.50 2.1 1.3 5.7 8.8 6.7 10 1.8 14 7.2 1.4 28 0.94 0.51 1.9 1.3 3.8 11 4.8 7.3 2.8 11 5.4 1.3 29 1.8 0.58 1.8 1.3 --- 9.8 3.7 5.2 2.6 8.3 4.3 1.1 30 0.50 0.76 1.7 2.0 --- 11 3.1 3.9 2.0 6.5 3.7 1.1 31 0.36 --- 1.9 1.6 --- 9.1 --- 3.3 --- 6.3 3.3 --- TOTAL 14.93 33.66 61.40 52.0 60.6 632.6 327.1 243.0 290.2 413.6 656.6 103.2 MEAN 0.48 1.12 1.98 1.68 2.16 20.4 10.9 7.84 9.67 13.3 21.2 3.44 MAX 1.9 3.9 11 3.5 5.7 76 47 37 37 54 96 10 MIN 0.17 0.29 0.76 1.3 1.2 4.4 3.1 1.1 1.7 3.7 3.3 1.1 CFSM 0.22 0.51 0.90 0.76 0.98 9.28 4.96 3.56 4.40 6.06 9.63 1.56 IN. 0.25 0.57 1.04 0.88 1.02 10.70 5.53 4.11 4.91 6.99 11.10 1.75 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 2001 - 2003, BY WATER YEAR (WY) MEAN 0.48 0.85 1.34 1.43 1.67 10.9 4.74 2.97 3.65 5.22 8.11 2.22 MAX 0.48 1.12 1.98 1.68 2.16 20.4 10.9 7.84 9.67 13.3 21.2 3.44 (WY) 2002 2003 2003 2003 2003 2003 2003 2003 2003 2003 2003 2003 MIN 0.48 0.58 0.70 1.19 1.18 1.39 0.71 0.42 0.24 0.26 1.04 0.46 (WY) 2003 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 SUMMARY STATISTICS FOR 2002 CALENDAR YEAR FOR 2003 WATER YEAR WATER YEARS 2001 - 2003 ANNUAL TOTAL 318.80 2888.89 ANNUAL MEAN 0.87 7.91 4.32 HIGHEST ANNUAL MEAN 7.91 2003 LOWEST ANNUAL MEAN 0.72 2002 HIGHEST DAILY MEAN 11 Dec 24 96 Aug 11 96 Aug 11 2003 LOWEST DAILY MEAN 0.11 Jul 5 0.17 Oct 6 0.11 Jul 5 2002 ANNUAL SEVEN-DAY MINIMUM 0.15 Jun 13 0.21 Oct 1 0.15 Jun 13 2002 MAXIMUM PEAK FLOW 111000 Mar 15 2003 MAXIMUM PEAK STAGE 3.75 Mar 15 3.75 Mar 15 2003 ANNUAL RUNOFF (CFSM) 0.397 3.60 1.96 ANNUAL RUNOFF (INCHES) 5.39 48.85 26.67 10 PERCENT EXCEEDS 1.7 17 11 50 PERCENT EXCEEDS 0.58 3.3 1.0 90 PERCENT EXCEEDS 0.18 0.57 0.23 e Estimated