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Snowcap Coal Compnay, Inc. PRELIMINARY SQ 58 <br />U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES S111BJ ECT T REC list <br />STATION:09095500 COLORADO RIVER NEAR CAMEO, CO. TYPE:STREAM AGENCY:USGS STATE:08 COUNTY:077 <br />LATITUDE: 391421 LONGITUDE: 1081556 NAD27 DRAINAGE AREA:8050 ` CONTRIBUTING DRAINAGE AREA:8050.00* DATUM:4813.73 NGVD29 <br />Date Processed: 2008-12-31 12:35 By swreview <br />Lowest aging status in period is APPROVED <br />DD #1 <br />Discharge, cubic feet per second <br />WATER YEAR OCTOBER 2007 TO SEPTEMBER 2008 <br />DAILY MEAN VALUES <br />DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP <br />1 2500 2060 2200 e1370 1480 2030 2420 5890 18900 15500 3960 3270 <br />2 2970 2050 #2360 e120O e1570 2110 2210 6060 20000 15100 3740 3250 <br />3 2710 2010 2050 e115O e1630 1980 2170 5460 21700 14100 3660 3220 <br />4 2630 1950 1870 e1480 e1730 1820 2220 4830 22500 13300 3480 3110 <br />5 2590 1890 1960 e2030 e1710 1840 2180 4680 20900 12800 3450 3010 <br />6 2630 1890 2020 e2070 e1470 1800 2220 4880 19000 12300 3360 2910 <br />7 2550 1860 2280 e184O e1360 1740 2270 6140 17800 12200 3590 2930 <br />8 2460 1840 2290 e1680 e1460 1820 2350 7970 18200 12500 3930 2990 <br />9 2410 1800 2190 e1640 e1620 1800 2300 9580 17700 11600 4310 2990 <br />10 2390 1800 2030 e1620 e1760 1810 2310 9280 16400 10800 4040 2920 <br />11 2330 1820 1900 e1590 e1750 1820 2270 8690 16600 10100 4040 2900 <br />12 2290 1820 1890 e160O e1770 1800 2200 8080 16200 9220 4070 3080 <br />13 2240 1810 1800 e1570 e1790 1820 2120 8200 14100 8760 3710 3400 <br />14 2320 1770 1780 e1470 1910 1850 2170 8280 13200 8400 3480 3410 <br />15 2540 1760 1790 e1420 1900 1850 2370 7720 13800 7850 3280 3200 <br />16 2570 1710 1540 e1370 e1850 1780 2770 7440 15300 7200 3190 3080 <br />17 2580 1750 1620 e1210 e1740 1750 3120 7550 16800 6940 3260 3020 <br />18 2670 1810 e1630 e1180 e1700 1750 2900 8880 16900 6610 3420 2940 <br />19 2600 1820 e1710 e1230 e1640 1740 2940 11500 17600 6360 3420 3000 <br />20 2480 1860 e1740 e1410 e1650 1750 3320 14700 18100 6150 3160 3010 <br />21 2540 1860 e1780 e150O e1710 1790 3730 18000 17800 5880 3020 3010 <br />22 2550 1830 e1770 e1830 e1850 1830 4020 20400 17300 5970 2930 3020 <br />23 2440 1660 e1530 1730 e2120 1850 4230 20100 16600 6040 2910 2990 <br />24 2370 1600 e1590 1630 2110 1840 4570 17600 15800 6230 3030 2920 <br />25 2390 1550 e17OO e1600 2420 1870 4820 15200 15700 6080 3070 2900 <br />26 2410 1540 e1670 e1600 2190 1950 4690 13600 16400 5590 3040 2880 <br />27 2410 1670 e1550 e1560 2050 2030 4370 13400 16400 5360 3000 2850 <br />28 2370 1660 e1480 e156O 1990 2120 4250 14200 16000 5260 3020 2840 <br />29 2310 1650 e1360 e1650 2020 2090 4490 15700 15800 4980 3020 2840 <br />30 2190 1440 e132O 1590 --- 2150 5190 17200 15700 4650 3140 2860 <br />31 2090 --- 1480 e1370 --- 2380 --- 18100 --- 4230 3190 --- <br />76530 53540 55880 47750 51950 58560 93190 339310 515200 268060 105920 90750 <br />2469 1785 1803 1540 1791 1889 3106 10950 17170 8647 3417 3025 <br />2970 2060 2360 2070 2420 2380 5190 20400 22500 15500 4310 3410 <br />MIN 2090 1440 1320 1150 1360 1740 212.0 4680 13200 4230 2910 2840 <br />AC-FT 151800 106200 110800 94710 103000 116200 184800 673000 1022000 531700 210100 180000 <br />STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1934 - 2008, BY WATER YEAR (WY) <br />MEAN 2167 1947 1693 1581 1593 1809 3157 8983 12130 5682 2831 2238 <br />MAX 3732 3253 3002 2621 2775 3365 8615 20290 25830 17430 6571 4271 <br />(WY) 1985 1985 1985 1985 1986 1986 1962 1984 1984 1957 1984 1984 <br />MIN 1084 1038 1004 940 941 1020 1723 2536 2606 1515 1332 1243 <br />(WY) 1935 1935 1935 1964 1935 1935 2003 1977 2002 1934 1940 1934 <br />SUMMARY STATISTICS FOR 2007 CALENDAR YEAR FOR 2008 WATER YEAR WATER YEARS 1934 - 2008 <br />ANNUAL TOTAL 1159110 1756640 <br />ANNUAL MEAN 3176 4800 3823 <br />HIGHEST ANNUAL MEAN 7605 1984 <br />LOWEST ANNUAL MEAN 1751 2002 <br />HIGHEST DAILY MEAN 10600 May 21 22500 Jun 4 38000 May 26 1984 <br />LOWEST DAILY MEAN 1020 Jan 17 1150 Jan 3 700 Dec 29 1939 <br />ANNUAL SEVEN-DAY MINIMUM 1140 Jan 15 1330 Jan 14 852 Dec 24 1939 <br />MAXIMUM PEAK FLOW 23100 Jun 4 39300 May 26 1984 <br />MAXIMUM PEAK STAGE 11.83 Jun 4 14.36 May 26 1984 <br />ANNUAL RUNOFF (AC-FT) 2299000 3484000 2770000 <br />10 PERCENT EXCEEDS - 6820 15100 9240 <br />50 PERCENT EXCEEDS 2500 2470 2150 <br />90 PERCENT EXCEEDS 1560 1600 1360 <br />e Estimated <br /># Value is write-protected with a "1" <br />• <br />08AHR 02/09