1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 021973007 MILL CREEK AT SAVANNAH RIVER SITE, SC SOURCE AGENCY USGS STATE 45 COUNTY 011 LATITUDE 331914 LONGITUDE 0813532 NAD27 DRAINAGE AREA CONTRIBUTING DRAINAGE AREA DATUM 177.4 NGVD29 Date Processed: 2004-08-20 15:13 By mishealy APPROVED DD #14, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1994 TO SEPTEMBER 1995 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 4.5 13 6.4 7.7 11 42 8.1 4.0 5.7 5.8 2.7 3.5 2 9.0 6.2 5.6 7.4 11 23 7.8 4.1 9.0 5.2 3.4 3.5 3 20 5.3 5.3 6.9 10 18 7.6 3.9 12 5.5 13 3.3 4 10 5.2 7.7 6.8 17 17 7.4 3.9 6.2 5.0 6.4 3.0 5 5.7 5.2 20 6.6 10 17 7.3 3.9 34 4.0 4.3 2.9 6 4.5 5.2 7.6 7.6 9.5 17 9.7 3.6 39 3.6 3.4 3.0 7 4.1 5.1 6.3 74 9.6 16 8.8 3.6 10 4.1 5.3 3.2 8 4.0 5.1 5.9 19 9.6 18 7.5 3.5 7.3 3.5 8.5 3.4 9 3.9 5.1 5.5 14 8.9 15 7.1 3.5 11 3.3 4.6 3.2 10 3.8 5.2 5.4 13 13 13 6.8 3.5 16 3.1 3.8 2.9 11 3.8 7.9 13 12 27 13 6.6 3.5 6.2 2.9 3.3 5.5 12 15 6.7 7.0 11 18 13 6.6 3.2 6.9 3.5 3.2 4.9 13 75 5.3 7.0 10 11 13 7.7 3.0 6.6 2.9 3.0 3.5 14 20 4.9 6.8 52 11 12 6.2 4.3 4.9 2.8 2.7 7.3 15 13 4.6 6.3 70 13 12 5.9 4.9 4.3 3.4 2.5 4.7 16 9.0 4.7 5.6 31 17 12 5.7 3.6 4.6 5.2 2.4 3.6 17 8.0 5.3 5.8 20 35 12 5.4 3.3 4.6 6.3 2.4 3.4 18 6.9 4.8 5.4 17 78 11 5.1 3.0 3.9 4.0 2.4 3.2 19 6.4 4.6 5.2 17 42 11 5.0 14 3.8 3.9 3.8 2.8 20 6.4 4.2 5.2 17 27 10 4.9 10 4.0 3.3 3.2 2.7 21 6.1 9.8 5.2 14 23 10 4.8 4.3 4.2 2.9 3.4 2.8 22 13 7.3 54 13 20 9.8 5.3 3.6 3.8 2.8 3.2 2.9 23 15 5.1 38 22 19 9.8 6.2 3.2 3.7 2.7 2.8 2.9 24 7.1 4.6 21 16 18 9.3 6.0 3.1 11 4.7 3.1 50 25 6.1 4.5 13 12 17 9.1 5.2 3.0 11 8.0 3.7 13 26 5.9 6.4 10 12 16 8.9 4.7 2.9 4.5 3.7 58 12 27 5.6 15 9.1 12 16 9.0 4.6 2.7 4.5 4.2 13 7.7 28 5.5 8.4 8.6 17 17 8.8 4.6 2.6 42 3.5 7.9 5.5 29 5.5 11 8.2 20 --- 8.4 4.3 2.7 9.2 3.4 5.8 4.7 30 5.4 10 7.9 13 --- 8.4 4.1 3.2 6.9 3.4 4.3 4.3 31 6.0 --- 7.7 12 --- 8.2 --- 3.3 --- 3.0 3.7 --- TOTAL 314.2 195.7 325.7 583.0 534.6 414.7 187.0 124.9 300.8 123.6 193.2 179.3 MEAN 10.1 6.52 10.5 18.8 19.1 13.4 6.23 4.03 10.0 3.99 6.23 5.98 MAX 75 15 54 74 78 42 9.7 14 42 8.0 58 50 MIN 3.8 4.2 5.2 6.6 8.9 8.2 4.1 2.6 3.7 2.7 2.4 2.7 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1995 - 1995, BY WATER YEAR (WY) MEAN --- --- --- --- --- --- --- --- --- --- --- --- MAX --- --- --- --- --- --- --- --- --- --- --- --- (WY) --- --- --- --- --- --- --- --- --- --- --- --- MIN --- --- --- --- --- --- --- --- --- --- --- --- (WY) --- --- --- --- --- --- --- --- --- --- --- --- SUMMARY STATISTICS FOR 1995 WATER YEAR MAXIMUM PEAK STAGE 5.44 Jan 7 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 021973007 MILL CREEK AT SAVANNAH RIVER SITE, SC SOURCE AGENCY USGS STATE 45 COUNTY 011 LATITUDE 331914 LONGITUDE 0813532 NAD27 DRAINAGE AREA CONTRIBUTING DRAINAGE AREA DATUM 177.4 NGVD29 Date Processed: 2004-08-20 15:13 By mishealy APPROVED DD #14, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 4.2 6.3 5.4 19 6.4 6.3 16 6.2 2.3 1.0 5.4 2.7 2 4.0 5.6 5.4 8.7 9.2 5.7 9.3 4.6 2.1 1.2 9.5 2.8 3 3.7 6.6 5.3 7.2 13 5.1 7.8 4.1 2.0 1.2 4.8 2.9 4 8.6 6.4 5.3 6.4 7.4 4.9 7.4 3.8 2.0 1.3 4.8 12 5 5.6 5.3 5.2 6.2 6.7 4.9 7.0 3.6 2.9 6.0 13 21 6 4.5 5.2 5.3 6.0 6.5 14 10 3.3 2.1 13 5.6 5.3 7 4.1 19 35 10 6.2 40 9.0 3.2 1.8 4.7 4.3 3.7 8 3.7 16 8.9 7.0 6.0 14 7.2 4.2 2.4 3.4 3.7 3.3 9 3.5 7.4 15 6.0 5.8 9.7 7.0 3.4 4.1 3.3 4.8 3.0 10 3.5 6.9 8.7 5.9 5.5 8.8 6.5 3.1 2.2 2.5 5.2 3.6 11 3.6 12 7.0 5.5 5.6 8.2 6.3 2.9 2.2 2.3 3.7 5.0 12 3.7 11 6.7 8.3 5.3 7.8 6.1 2.7 2.0 2.3 4.9 3.6 13 3.9 7.2 6.4 5.9 5.1 7.5 6.0 2.7 4.9 2.1 4.3 3.1 14 8.7 6.5 6.3 5.4 5.1 7.2 5.9 2.8 2.2 2.2 8.5 2.7 15 10 6.3 6.1 5.5 5.1 15 5.6 2.9 3.5 4.9 4.3 2.6 16 4.9 6.1 5.9 5.5 5.0 17 5.4 2.8 3.9 7.2 3.6 2.7 17 4.2 6.1 5.7 5.5 5.1 22 5.2 2.6 2.1 4.4 3.7 3.0 18 3.8 6.0 5.7 6.0 5.0 17 5.0 2.4 1.7 11 3.7 2.6 19 3.7 6.0 28 7.3 4.9 12 5.2 2.3 1.6 3.6 3.0 2.5 20 3.6 6.0 9.6 5.6 8.3 9.4 5.9 2.0 1.7 2.8 2.4 2.4 21 3.6 6.0 7.5 5.3 5.7 8.5 5.7 2.0 2.4 3.1 2.1 2.6 22 3.4 5.7 7.0 5.3 5.0 8.1 4.9 1.9 1.7 2.7 2.0 4.1 23 3.4 5.6 6.8 5.2 4.9 7.6 4.6 1.8 1.0 2.4 4.2 2.9 24 3.4 6.2 6.6 9.7 4.9 7.3 4.4 1.9 1.0 2.4 5.6 2.5 25 3.4 7.4 6.5 6.9 4.4 7.2 4.2 3.1 4.3 2.5 18 2.3 26 3.5 6.1 6.4 5.5 4.2 7.2 4.4 3.0 1.6 3.4 5.0 2.3 27 5.8 5.9 6.1 23 4.2 14 4.7 8.6 1.0 2.1 3.9 2.3 28 22 5.8 6.0 8.7 16 32 3.9 11 1.0 3.5 3.6 2.3 29 6.1 5.7 6.0 7.1 9.5 13 5.2 4.5 1.0 2.7 3.5 3.0 30 5.0 5.5 6.0 6.6 --- 10 17 3.0 1.0 1.9 3.2 6.0 31 5.7 --- 7.2 7.2 --- 11 --- 2.7 --- 2.2 2.8 --- TOTAL 160.8 217.8 259.0 233.4 186.0 362.4 202.8 109.1 65.7 109.3 157.1 120.8 MEAN 5.19 7.26 8.35 7.53 6.41 11.7 6.76 3.52 2.19 3.53 5.07 4.03 MAX 22 19 35 23 16 40 17 11 4.9 13 18 21 MIN 3.4 5.2 5.2 5.2 4.2 4.9 3.9 1.8 1.0 1.0 2.0 2.3 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1995 - 1996, BY WATER YEAR (WY) MEAN 7.66 6.89 9.43 13.2 12.6 12.5 6.50 3.77 6.11 3.76 5.65 5.00 MAX 10.1 7.26 10.5 18.8 19.1 13.4 6.76 4.03 10.0 3.99 6.23 5.98 (WY) 1995 1996 1995 1995 1995 1995 1996 1995 1995 1995 1995 1995 MIN 5.19 6.52 8.35 7.53 6.41 11.7 6.23 3.52 2.19 3.53 5.07 4.03 (WY) 1996 1995 1996 1996 1996 1996 1995 1996 1996 1996 1996 1996 SUMMARY STATISTICS FOR 1995 CALENDAR YEAR FOR 1996 WATER YEAR WATER YEARS 1995 - 1996 ANNUAL TOTAL 2184.2 ANNUAL MEAN 5.97 7.74 HIGHEST ANNUAL MEAN 9.53 1995 LOWEST ANNUAL MEAN 5.97 1996 HIGHEST DAILY MEAN 40 Mar 7 78 Feb 18 1995 LOWEST DAILY MEAN 1.0 Jun 23 1.0 Jun 23 1996 ANNUAL SEVEN-DAY MINIMUM 1.1 Jun 27 1.1 Jun 27 1996 MAXIMUM PEAK FLOW 58 Mar 7 0.00 Jan 7 1995 MAXIMUM PEAK STAGE 3.65 Mar 7 5.44 Jan 7 1995 10 PERCENT EXCEEDS 10 15 50 PERCENT EXCEEDS 5.2 5.5 90 PERCENT EXCEEDS 2.2 2.7 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 021973007 MILL CREEK AT SAVANNAH RIVER SITE, SC SOURCE AGENCY USGS STATE 45 COUNTY 011 LATITUDE 331914 LONGITUDE 0813532 NAD27 DRAINAGE AREA CONTRIBUTING DRAINAGE AREA DATUM 177.4 NGVD29 Date Processed: 2004-08-20 15:13 By mishealy APPROVED DD #14, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 --- --- --- 5.2 36 2.8 4.3 15 1.6 3.7 1.8 1.2 2 --- --- --- 5.7 19 2.6 3.5 7.5 1.5 4.1 1.7 1.2 3 --- --- --- 24 8.8 2.7 2.5 5.3 1.5 2.7 1.7 1.1 4 --- --- --- 8.7 8.3 2.6 2.3 4.6 1.4 2.1 1.5 1.1 5 --- --- --- 7.0 6.2 2.5 2.1 4.5 1.3 1.7 1.4 1.1 6 --- --- --- 6.6 5.4 2.6 1.9 8.6 1.3 7.1 1.4 1.0 7 --- --- --- 6.6 5.0 2.5 2.0 9.3 1.3 14 1.4 0.96 8 --- --- e5.2 6.3 4.7 2.3 12 5.3 1.2 3.5 1.3 0.98 9 --- --- 5.0 6.7 4.3 4.7 17 4.0 1.2 2.1 1.3 3.2 10 --- --- 4.7 6.4 4.9 3.7 7.6 3.6 1.1 1.7 1.3 3.9 11 --- --- 4.7 5.7 4.3 2.6 6.2 3.3 1.1 15 1.3 2.1 12 --- --- 4.6 5.6 4.0 2.4 5.2 3.2 1.1 26 1.3 1.7 13 --- --- 5.4 5.4 3.7 2.3 4.8 3.5 1.1 40 1.2 1.5 14 --- --- 5.4 5.8 3.6 15 4.5 3.4 1.0 15 1.2 1.4 15 --- --- 7.4 26 3.6 4.8 8.8 3.0 1.1 9.7 1.3 2.1 16 --- --- 11 9.0 3.5 2.9 11 3.0 16 8.1 1.6 3.3 17 --- --- 6.0 7.2 3.5 2.2 5.6 2.8 29 7.7 1.8 1.9 18 --- --- 4.9 22 4.5 1.9 4.9 2.5 6.2 5.4 1.5 1.6 19 --- --- 4.7 11 3.7 1.6 4.6 2.8 3.6 4.5 1.4 1.7 20 --- --- 4.7 7.6 3.6 1.5 4.3 2.5 2.9 3.7 6.0 4.8 21 --- --- 4.6 7.0 3.3 2.3 4.0 2.2 3.0 3.1 4.1 17 22 --- --- 4.5 6.7 3.2 2.1 3.7 2.1 2.7 21 2.2 4.7 23 --- --- 4.5 28 3.0 1.5 3.4 2.5 2.4 16 1.7 3.1 24 --- --- 5.6 40 3.0 1.5 3.2 3.1 2.0 5.3 1.7 2.7 25 --- --- 17 13 3.0 9.0 3.0 2.3 2.2 3.8 1.8 2.7 26 --- --- 16 8.5 3.0 16 3.2 2.0 2.3 3.1 1.7 2.9 27 --- --- 8.4 6.7 2.8 5.2 3.0 2.0 2.3 2.7 1.6 12 28 --- --- 6.7 5.4 2.9 3.5 7.0 1.9 2.8 2.3 1.5 22 29 --- --- 6.2 4.6 --- 3.0 5.6 1.8 8.8 2.1 1.4 9.7 30 --- --- 5.7 5.3 --- 2.7 18 1.8 8.4 2.0 1.3 4.5 31 --- --- 5.3 6.5 --- 2.8 --- 1.7 --- 1.8 1.2 --- TOTAL --- --- --- 320.2 164.8 115.8 169.2 121.1 113.4 241.0 53.6 119.14 MEAN --- --- --- 10.3 5.89 3.74 5.64 3.91 3.78 7.77 1.73 3.97 MAX --- --- --- 40 36 16 18 15 29 40 6.0 22 MIN --- --- --- 4.6 2.8 1.5 1.9 1.7 1.0 1.7 1.2 0.96 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1995 - 1999, BY WATER YEAR (WY) MEAN 7.66 6.89 9.43 12.2 10.4 9.60 6.21 3.82 5.33 5.10 4.34 4.66 MAX 10.1 7.26 10.5 18.8 19.1 13.4 6.76 4.03 10.0 7.77 6.23 5.98 (WY) 1995 1996 1995 1995 1995 1995 1996 1995 1995 1999 1995 1995 MIN 5.19 6.52 8.35 7.53 5.89 3.74 5.64 3.52 2.19 3.53 1.73 3.97 (WY) 1996 1995 1996 1996 1999 1999 1999 1996 1996 1996 1999 1999 SUMMARY STATISTICS WATER YEARS 1995 - 1999 ANNUAL MEAN 7.74 HIGHEST ANNUAL MEAN 9.53 1995 LOWEST ANNUAL MEAN 5.97 1996 HIGHEST DAILY MEAN 78 Feb 18 1995 LOWEST DAILY MEAN 0.96 Sep 7 1999 ANNUAL SEVEN-DAY MINIMUM 1.1 Jun 27 1996 MAXIMUM PEAK FLOW 100000 Jan 7 1995 MAXIMUM PEAK STAGE 5.44 Jan 7 1995 10 PERCENT EXCEEDS 14 50 PERCENT EXCEEDS 5.1 90 PERCENT EXCEEDS 2.1 e Estimated 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 021973007 MILL CREEK AT SAVANNAH RIVER SITE, SC SOURCE AGENCY USGS STATE 45 COUNTY 011 LATITUDE 331914 LONGITUDE 0813532 NAD27 DRAINAGE AREA CONTRIBUTING DRAINAGE AREA DATUM 177.4 NGVD29 Date Processed: 2004-08-20 15:13 By mishealy APPROVED DD #14, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 1.6 1.9 3.3 2.9 7.3 2.5 7.0 2.1 1.1 2.3 9.6 1.2 2 1.2 4.7 3.4 2.9 6.2 2.4 3.8 1.8 1.1 3.0 8.2 1.1 3 1.1 3.3 3.5 2.8 5.6 2.4 3.7 1.7 1.0 1.8 3.1 2.0 4 7.5 2.5 3.5 4.4 5.1 4.6 3.6 1.7 1.1 1.4 2.6 2.5 5 6.5 2.4 3.6 5.3 4.6 3.3 3.5 1.6 1.0 1.3 2.2 1.7 6 2.7 2.3 5.7 3.3 4.5 2.5 3.4 1.6 0.98 1.2 1.7 1.8 7 1.8 2.2 4.6 3.6 4.3 2.3 3.2 1.5 0.96 1.2 1.4 1.9 8 1.7 2.3 3.7 3.1 4.1 2.2 3.5 1.4 0.94 1.2 1.3 1.5 9 2.5 2.4 3.5 2.9 4.0 2.0 3.9 1.3 0.97 1.1 1.2 1.3 10 2.4 2.5 3.4 26 4.0 1.9 3.4 1.3 0.99 1.0 1.2 1.2 11 2.6 3.2 3.4 8.6 3.9 2.7 3.2 1.3 0.99 1.0 1.2 1.1 12 7.9 3.3 3.2 4.7 4.2 5.3 3.0 1.2 0.92 0.97 1.2 1.0 13 16 3.4 3.2 3.8 4.6 2.7 2.9 1.2 0.89 0.94 1.2 1.0 14 4.1 3.3 5.1 3.2 17 2.2 3.5 1.2 0.89 0.94 1.1 0.97 15 2.2 3.2 3.6 2.9 7.1 2.0 14 1.2 0.94 0.92 1.1 0.92 16 1.5 3.0 3.2 2.8 5.4 7.7 5.7 1.2 0.95 0.87 0.99 0.89 17 1.7 3.1 3.1 2.8 5.0 7.8 3.9 1.2 0.94 0.87 0.95 1.0 18 1.8 3.2 3.1 2.8 4.7 2.9 3.4 1.2 0.94 0.84 1.0 1.7 19 1.5 2.9 6.4 2.9 4.6 2.5 3.1 1.2 1.0 0.82 1.5 3.2 20 1.5 3.0 5.0 4.9 4.4 41 2.9 1.2 1.1 0.74 1.2 4.0 21 1.7 2.9 4.4 3.3 3.6 11 2.7 1.1 1.2 0.72 1.1 4.6 22 1.5 3.1 4.4 2.8 2.7 7.0 2.4 1.1 3.3 0.71 1.1 5.8 23 1.3 3.1 3.7 15 2.7 5.9 2.3 1.0 4.0 0.96 1.0 e58 24 1.3 3.1 3.2 36 2.7 5.6 2.3 1.1 1.8 1.4 0.99 9.6 25 1.3 3.3 3.1 20 2.6 5.1 2.5 1.1 1.4 1.3 1.4 4.6 26 1.4 18 3.1 8.6 2.5 4.7 2.4 1.8 1.3 1.2 1.4 11 27 1.4 6.6 3.1 6.7 2.9 5.3 2.2 2.9 1.2 1.1 1.2 4.2 28 1.4 3.9 2.9 5.9 3.5 5.9 3.2 1.5 1.2 1.0 1.1 2.9 29 1.4 3.5 2.9 9.8 2.6 5.9 2.8 1.2 1.8 0.97 1.0 2.2 30 1.3 3.3 2.9 21 --- 8.3 2.3 1.1 3.6 0.92 1.0 2.0 31 1.5 --- 2.9 12 --- 9.3 --- 1.1 --- 0.89 1.2 --- TOTAL 85.3 108.9 114.1 237.7 136.4 176.9 109.7 43.1 40.50 35.58 56.43 136.88 MEAN 2.75 3.63 3.68 7.67 4.70 5.71 3.66 1.39 1.35 1.15 1.82 4.56 MAX 16 18 6.4 36 17 41 14 2.9 4.0 3.0 9.6 58 MIN 1.1 1.9 2.9 2.8 2.5 1.9 2.2 1.0 0.89 0.71 0.95 0.89 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1995 - 2000, BY WATER YEAR (WY) MEAN 6.02 5.80 7.51 11.1 8.96 8.63 5.57 3.21 4.34 4.11 3.71 4.63 MAX 10.1 7.26 10.5 18.8 19.1 13.4 6.76 4.03 10.0 7.77 6.23 5.98 (WY) 1995 1996 1995 1995 1995 1995 1996 1995 1995 1999 1995 1995 MIN 2.75 3.63 3.68 7.53 4.70 3.74 3.66 1.39 1.35 1.15 1.73 3.97 (WY) 2000 2000 2000 1996 2000 1999 2000 2000 2000 2000 1999 1999 SUMMARY STATISTICS FOR 1999 CALENDAR YEAR FOR 2000 WATER YEAR WATER YEARS 1995 - 2000 ANNUAL TOTAL 1281.49 ANNUAL MEAN 3.50 6.33 HIGHEST ANNUAL MEAN 9.53 1995 LOWEST ANNUAL MEAN 3.50 2000 HIGHEST DAILY MEAN 58 Sep 23 78 Feb 18 1995 LOWEST DAILY MEAN 0.71 Jul 22 0.71 Jul 22 2000 ANNUAL SEVEN-DAY MINIMUM 0.80 Jul 16 0.80 Jul 16 2000 MAXIMUM PEAK STAGE 5.15 Sep 23 5.44 Jan 7 1995 10 PERCENT EXCEEDS 5.9 12 50 PERCENT EXCEEDS 2.5 4.1 90 PERCENT EXCEEDS 1.0 1.3 e Estimated