³

May 6, 2008 290,000 May 6, 2008 296,000 May 28, 2008 310,000 May 28, 2008 290,000 May 28, 2008 268,000 Jun 18, 2008 289,000 Jun 18, 2008 283,000

Aug 19, 2008 283,000 Aug 19, 2008 289,000

227,000 222,000 220,000 196,000 220,000 257,000 265,000 282,000 300,000 275,000 276,000 278,000

227,000 224,000 221,000 196,000 220,000 257,000 265,000 283,000 300,000 275,000 280,000 278,000

227,000 228,000 220,000 202,000 220,000 257,000 265,000 287,000 298,000 275,000 281,000 278,000

227,000 228,000 220,000 201,000 223,000 257,000 265,000 287,000 298,000 275,000 281,000 278,000

234,000 228,000 221,000 201,000 229,000 257,000 265,000 289,000 298,000 274,000 280,000 277,000

227,000 227,000 220,000 201,000 230,000 257,000 264,000 292,000 298,000 276,000 281,000 274,000

227,000 227,000 221,000 201,000 230,000 257,000 265,000 297,000 281,000 275,000 281,000 275,000

227,000 225,000 221,000 201,000 236,000 257,000 258,000 300,000 281,000 275,000 279,000 274,000

234,000 225,000 221,000 201,000 237,000 256,000 248,000 300,000 281,000 275,000 276,000 275,000

231,000 228,000 221,000 201,000 236,000 257,000 237,000 300,000 281,000 275,000 281,000 274,000

227,000 228,000 221,000 218,000 237,000 257,000 236,000 300,000 281,000 275,000 281,000 275,000

231,000 228,000 220,000 220,000 236,000 257,000 230,000 301,000 281,000 272,000 280,000 275,000

230,000 228,000 221,000 220,000 237,000 257,000 211,000 300,000 280,000 272,000 281,000 285,000

227,000 227,000 220,000 220,000 237,000 258,000 219,000 300,000 284,000 271,000 280,000 284,000

229,000 228,000 220,000 220,000 237,000 262,000 236,000 300,000 288,000 271,000 280,000 265,000

230,000 225,000 212,000 220,000 236,000 262,000 254,000 299,000 287,000 271,000 283,000 266,000

231,000 224,000 211,000 220,000 237,000 262,000 259,000 298,000 287,000 272,000 282,000 266,000

231,000 225,000 185,000 220,000 237,000 261,000 261,000 303,000 288,000 271,000 283,000 266,000

232,000 226,000 177,000 215,000 237,000 262,000 261,000 301,000 287,000 267,000 283,000 267,000

231,000 228,000 178,000 215,000 236,000 262,000 261,000 301,000 286,000 267,000 283,000 269,000

227,000 228,000 180,000 215,000 237,000 262,000 257,000 300,000 280,000 267,000 282,000 269,000

228,000 224,000 180,000 215,000 247,000 263,000 254,000 300,000 280,000 267,000 283,000 269,000

230,000 221,000 189,000 215,000 247,000 263,000 254,000 300,000 280,000 267,000 283,000 269,000

230,000 221,000 202,000 215,000 248,000 263,000 254,000 297,000 280,000 267,000 283,000 269,000

223,000 221,000 202,000 215,000 247,000 263,000 258,000 302,000 280,000 268,000 283,000 269,000

226,000 221,000 200,000 215,000 257,000 263,000 261,000 301,000 280,000 276,000 283,000 269,000

224,000 221,000 196,000 215,000 257,000 264,000 261,000 301,000 280,000 275,000 283,000 260,000

223,000 221,000 196,000 215,000 257,000 264,000 261,000 301,000 275,000 275,000 283,000 260,000

222,000 221,000 196,000 215,000 257,000 264,000 267,000 300,000 275,000 275,000 283,000 261,000

222,000 221,000 196,000 215,000 --- 264,000 275,000 299,000 275,000 274,000 277,000 261,000

222,000 --- 196,000 215,000 --- 264,000 --- 296,000 --- 277,000 278,000 ---

7,064,000 6,749,000 6,404,000 6,554,000 6,902,000 8,066,000 7,627,000 9,217,000 8,550,000 8,447,000 8,713,000 8,135,000

227,900 225,000 206,600 211,400 238,000 260,200 254,200 297,300 285,000 272,500 281,100 271,200

234,000 228,000 221,000 220,000 257,000 264,000 275,000 303,000 300,000 277,000 283,000 285,000

222,000 221,000 177,000 196,000 220,000 256,000 211,000 282,000 275,000 267,000 276,000 260,000

249,800 246,100 241,000 226,500 235,300 247,600 256,800 266,700 270,600 267,500 262,900 257,000

323,800 338,100 327,000 298,700 293,300 335,100 325,100 353,500 353,500 350,000 330,300 326,400

(1987) (1987) (1987) (1987) (1997) (1998) (1973) (1993) (1993) (1973) (1974) (1986)

182,600 176,100 174,700 168,700 153,800 179,800 179,200 176,500 188,600 200,600 200,000 194,900

(1936) (1936) (1936) (1936) (1936) (1965) (1964) (1965) (1965) (1964) (1936) (1936)

90,770,000 92,428,000 248,700 252,500 252,400

309,300 1987 191,800 1936

301,000 Feb 23 303,000 May 18 378,000 May 20, 1993 177,000 Dec 19 177,000 Dec 19 139,000 Feb 7, 1936

184,000 Dec 18 184,000 Dec 18 148,000 Feb 6, 1936 286,000 287,000 299,000 244,000 260,000 252,000 221,000 215,000 208,000

Oct Nov Dec

2008

Jan Feb Mar Apr May Jun Jul Aug Sep

CURRENT WATER YEAR DAILY MEAN DISCHARGE (BOLD) WITH DAILY MEDIAN FOR PERIOD OF RECORD.

SHADED AREAS SHOW HIGHEST AND LOWEST DAILY MEAN FOR PERIOD OF RECORD THROUGH PREVIOUS WATER YEAR.

100000

200000

300000

400000

500000

600000

DIS

CH

AR

GE

, IN

CU

BIC

FE

ET

PE

R S

EC

ON

D

µ

0930 -- .5 <2.0 .029 .019 744 13.0 101 8.1 298 -- 3.9

0845 -- .4 <2.0 .024 .015 764 12.9 90 7.9 299 -- .7

0830 -- .2 <2.0 .032 .021 757 14.1 100 7.8 299 -- 1.0

1000 -- .3 <2.0 .029 .019 751 13.8 96 7.6 300 -- .0

0840 -- .3 2.1 .031 .021 754 13.2 92 7.8 305 -- .1

0800 -- .2 <2.0 .042 .034 752 14.2 99 7.7 308 -- .1

0800 -- .3 <2.0 .034 .023 768 11.4 78 8.0 299 -- .4

0900 -- .4 <2.0 .044 .031 757 12.7 98 8.0 281 -- 4.0

0630 290,000 .9 -- -- -- 756 13.2 114 8.0 290 -- 8.5

1110 296,000 .7 <2.0 .050 .035 759 8.6 74 8.0 291 -- 8.4

0700 310,000 -- 1.2 -- -- 764 10.8 98 8.0 289 -- 11.0

0900 290,000 -- E1.6 .046 .034 764 11.1 100 8.1 293 8.0 10.9

0910 268,000 -- E1.0 .044 .031 764 11.0 99 8.0 294 8.0 10.9

0730 289,000 -- .8 -- -- 750 10.2 107 8.2 293 -- 16.8

0920 283,000 -- 2.5 .041 .028 750 11.3 118 8.2 299 17.0 16.7

0700 283,000 -- 1.6 -- -- 753 7.8 91 8.4 297 -- 22.5

0915 289,000 -- <2.0 .028 .018 759 8.2 95 8.4 297 23.0 22.5

32.2 8.21 1.57 12.7 82 21.6 .14 .71 25.4 .20 .24 E.019 .26

36.1 9.08 1.66 13.2 90 21.9 .15 .71 26.0 .23 .18 E.013 .29

33.5 8.52 1.52 13.4 91 21.3 .16 .69 25.6 .29 .16 <.020 .32

35.1 8.69 1.64 13.4 95 21.1 E.11 .84 25.6 .18 E.13 E.015 .34

33.8 8.31 1.55 12.6 89 21.2 .12 1.08 25.6 .23 -- .021 .42

35.1 8.48 1.57 12.6 91 21.4 .12 1.03 25.5 .18 -- .034 .43

34.2 8.17 1.48 12.7 91 20.9 .13 1.08 24.7 .21 -- <.020 .40

31.9 7.78 1.50 12.0 86 20.0 .14 1.07 23.1 .23 -- <.020 .38

-- -- -- -- 86 -- -- -- -- -- -- -- --

33.5 7.72 1.50 12.6 87 19.9 E.10 .90 23.0 .24 .20 E.015 .37

-- -- -- -- 84 -- -- -- -- -- -- -- --

33.3 7.74 1.48 12.3 90 20.5 .13 .64 23.5 .22 .20 <.020 .35

33.2 7.73 1.46 12.3 92 20.5 .12 .62 23.5 .24 .18 <.020 .35

-- -- -- -- 90 -- -- -- -- -- -- -- --

31.2 7.70 1.48 12.2 94 21.0 E.11 .42 24.2 .23 .21 <.020 .31

-- -- -- -- 80 -- -- -- -- -- -- -- --

30.8 8.30 1.58 12.9 84 21.4 E.11 .71 24.8 .24 .21 <.020 .18

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.003 <.04 E.003 .007 E.006 E.1 <.04 <.1 2.1 .88 29 <8 2.4

.003 <.04 <.006 E.005 .008 <.1 <.04 <.1 2.4 .82 22 E5 1.8

.002 <.04 E.006 .008 E.007 <.1 <.04 <.1 2.6 .77 22 10 1.8

.002 <.04 .006 .009 -- <.1 <.04 <.1 2.5 .78 20 8 1.7

.002 <.04 .006 .008 -- <.1 <.04 <.1 1.9 .78 20 E4 1.5

E.002 <.04 E.005 .007 -- <.1 <.04 <.1 2.3 .82 21 E7 1.7

.002 <.04 <.006 E.005 -- <.1 <.04 <.1 2.2 .75 19 9 1.5

-- -- -- -- -- -- -- -- -- -- -- -- --

.003 <.04 <.006 E.004 .009 E.1 <.04 <.1 2.6 .76 22 11 1.4

-- -- -- -- -- -- -- -- -- -- -- -- --

.003 E.02 <.006 E.005 .010 .2 <.04 .2 2.6 .76 22 E5 1.6

.003 <.04 <.006 E.003 .009 .2 <.04 .2 2.6 .77 20 E7 1.5

-- -- -- -- -- -- -- -- -- -- -- -- --

.002 <.04 <.006 E.004 E.007 E.1 <.04 <.1 2.6 .82 27 E6 2.3

-- -- -- -- -- -- -- -- -- -- -- -- --

.003 E.03 E.005 .007 .009 .2 <.04 .2 2.2 .90 23 10 1.8

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.17 179 .22 <.04 <.006 <.010 E.039 <.010 <.006 <.008 <.005 <.006 <.006

.20 175 .23 <.04 <.006 <.010 E.032 <.010 <.006 <.008 <.005 <.006 <.006

.17 174 .24 <.04 <.006 <.010 E.038 <.010 <.006 <.008 <.005 <.006 <.006

.18 159 .26 <.04 <.006 <.010 E.040 <.010 <.006 <.008 <.005 <.006 <.006

.18 176 .22 <.04 <.006 <.010 E.042 <.010 <.006 <.008 <.005 <.006 <.006

.19 166 .23 <.04 <.006 <.010 E.035 <.010 <.006 <.008 <.005 <.006 <.006

.17 164 .23 <.04 <.006 <.010 E.045 <.010 <.006 <.008 <.005 <.006 <.006

.17 155 .23 <.04 <.006 <.010 E.039 <.010 <.006 <.008 <.005 <.006 <.006

-- -- -- -- -- -- -- -- -- -- -- -- --

.14 167 .22 <.04 <.006 <.010 E.037 <.010 <.006 <.008 <.005 <.006 <.006

-- -- -- -- -- -- -- -- -- -- -- -- --

.18 177 .24 <.04 <.006 <.010 E.042 <.010 <.006 <.008 <.005 <.006 <.006

.15 168 .24 <.04 <.006 <.010 E.041 <.010 <.006 <.008 <.005 <.006 <.006

-- -- -- -- -- -- -- -- -- -- -- -- --

.16 168 .24 <.04 <.006 <.010 E.041 <.010 <.006 <.008 <.005 <.006 <.006

-- -- -- -- -- -- -- -- -- -- -- -- --

.20 174 .29 <.04 <.006 <.010 E.042 <.010 <.006 <.008 <.005 <.006 <.006

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<.006 .075 <.04 <.120 <.004 <.060 <.020 <.06 <.005 <.010 <.006 E.014 <.016

<.006 .069 <.04 <.120 <.004 <.060 <.020 <.06 <.005 <.010 <.006 E.011 <.016

<.006 .070 <.04 <.120 <.004 <.060 <.020 <.06 <.005 <.010 <.006 E.011 <.016

<.006 .064 <.04 <.120 <.004 <.060 <.020 <.06 <.005 <.010 <.006 E.013 <.016

<.006 .060 <.04 <.120 <.010 <.060 <.020 <.06 <.005 <.010 <.006 E.011 <.016

<.006 .055 <.04 <.120 <.010 <.060 <.020 <.06 <.005 <.010 <.006 E.011 <.016

<.006 .065 <.04 <.120 <.010 <.060 <.020 <.06 <.005 <.010 <.006 E.011 <.016

<.006 .054 <.06 <.120 <.010 <.060 <.020 <.06 <.005 <.010 <.006 E.011 <.016

-- -- -- -- -- -- -- -- -- -- -- -- --

<.006 .054 <.04 <.120 <.010 <.060 <.020 <.06 <.005 <.010 <.006 E.008 <.016

-- -- -- -- -- -- -- -- -- -- -- -- --

<.006 .056 <.04 <.120 <.010 <.060 <.020 <.06 <.005 <.010 <.006 E.012 <.016

<.006 .056 <.04 <.120 <.010 <.060 <.020 <.06 <.005 <.010 <.006 E.013 <.016

-- -- -- -- -- -- -- -- -- -- -- -- --

<.006 .062 <.06 <.120 <.010 <.060 <.020 <.06 <.005 <.010 <.006 <.020 <.016

-- -- -- -- -- -- -- -- -- -- -- -- --

<.006 .068 <.04 <.120 <.010 <.060 <.020 <.06 <.005 <.010 <.006 <.020 <.016

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<.004 <.014 <.003 <.012 <.005 <.08 <.009 <.006 <.01 <.04 <.022 <.002 <.02

<.004 <.014 <.003 <.012 <.005 <.08 <.009 <.006 <.01 <.04 <.022 <.002 <.02

<.004 <.014 <.003 <.012 <.005 <.08 <.009 <.006 <.01 <.04 <.022 <.002 <.02

<.004 <.014 <.003 <.012 <.005 <.08 <.009 <.006 <.01 <.04 <.022 <.002 <.02

<.004 <.014 <.003 <.012 <.005 <.08 <.009 <.006 <.01 <.04 <.022 <.002 <.02

<.004 <.014 <.003 <.012 <.005 <.08 <.009 <.006 <.01 <.04 <.022 <.002 <.02

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<.004 <.014 <.003 <.012 <.005 <.08 <.009 <.006 <.01 <.04 <.022 <.002 <.02

-- -- -- -- -- -- -- -- -- -- -- -- --

<.004 <.014 <.003 <.012 <.005 <.08 <.009 <.006 <.01 <.04 <.022 <.002 <.02

-- -- -- -- -- -- -- -- -- -- -- -- --

<.004 <.014 <.003 <.012 <.005 <.08 <.009 <.006 <.01 <.04 <.022 <.002 <.02

<.004 <.014 <.003 <.012 <.005 <.08 <.009 <.006 <.01 <.04 <.022 <.002 <.02

-- -- -- -- -- -- -- -- -- -- -- -- --

<.004 <.014 <.003 <.012 <.005 <.08 <.009 <.006 <.01 <.04 <.022 <.002 <.02

-- -- -- -- -- -- -- -- -- -- -- -- --

<.004 <.014 <.003 <.012 <.005 <.08 <.009 <.006 <.01 <.04 <.022 <.002 <.02

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<.006 <.012 <.053 <.04 <.03 <.029 <.013 <.024 <.020 <.010 <.008 <.01 <.006

<.006 <.012 <.053 <.04 <.03 <.029 <.013 <.024 <.020 <.010 <.008 <.01 <.006

<.006 <.012 <.053 <.06 <.03 <.029 <.013 <.024 <.020 <.010 <.008 <.01 <.006

<.006 <.012 <.053 <.04 <.03 <.029 <.013 <.024 <.020 <.010 <.008 <.01 <.006

<.006 <.012 <.053 <.20 <.03 <.029 <.013 <.024 <.020 <.010 <.008 <.01 <.006

<.006 <.012 <.053 <.20 <.03 <.029 <.013 <.024 <.020 <.010 <.008 <.01 <.006

<.006 <.012 <.053 <.20 <.03 <.029 <.013 <.024 <.020 <.010 <.008 <.01 <.006

<.006 <.012 <.060 <.20 <.03 <.029 <.013 <.024 <.020 <.010 <.008 <.01 <.006

-- -- -- -- -- -- -- -- -- -- -- -- --

<.006 <.012 <.053 <.20 <.03 <.029 <.013 <.024 <.020 <.010 <.008 <.01 <.006

-- -- -- -- -- -- -- -- -- -- -- -- --

<.006 <.012 <.053 <.20 <.03 <.029 <.013 <.024 <.020 <.010 <.008 <.01 <.006

<.006 <.012 <.053 <.20 <.03 <.029 <.013 <.024 <.020 <.010 <.008 <.01 <.006

-- -- -- -- -- -- -- -- -- -- -- -- --

<.006 <.012 <.053 <.20 <.03 <.029 <.013 <.024 <.020 <.010 <.008 <.01 <.006

-- -- -- -- -- -- -- -- -- -- -- -- --

<.006 <.012 <.053 <.20 <.03 <.029 <.013 <.024 <.020 <.010 <.008 <.01 <.006

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<.020 <.016 <.010 <.004 <.01 <.008 .015 <.012 <.003 <.010 <.006 <.012 <.03

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<.020 <.016 <.007 <.004 <.01 <.008 .016 <.012 <.003 <.010 <.006 <.012 <.03

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<.020 <.016 <.007 <.004 <.01 <.008 .014 <.012 <.003 <.010 <.006 <.012 <.03

-- -- -- -- -- -- -- -- -- -- -- -- --

<.020 <.016 <.007 <.004 <.01 <.008 .012 <.012 <.003 <.010 <.006 <.012 <.03

-- -- -- -- -- -- -- -- -- -- -- -- --

<.020 <.016 <.007 <.004 <.01 <.008 .013 <.012 <.003 <.010 <.006 <.012 <.03

<.020 <.016 <.007 <.004 <.01 <.008 .013 <.012 <.003 <.010 <.006 <.012 <.03

-- -- -- -- -- -- -- -- -- -- -- -- --

<.020 <.016 <.007 <.004 <.01 <.008 .014 <.012 <.003 <.010 <.006 <.012 <.03

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<.020 <.016 <.007 <.004 <.01 <.008 <.010 <.012 <.003 <.010 <.006 <.012 <.03

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<.040 <.05 <.008 E.01 <.006 <.004 <.006 <.04 .012 <.02 <.003 <.04 <.02

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<.040 <.05 <.008 <.01 <.006 <.004 <.006 <.04 .013 <.02 <.003 <.04 <.02

<.040 <.05 <.008 E.01 <.006 <.004 <.006 <.04 .011 <.02 <.003 <.04 <.02

<.040 <.05 <.008 E.01 <.006 <.004 <.006 <.04 .011 <.02 <.003 <.04 <.02

<.040 <.05 <.008 <.01 <.006 <.004 <.006 <.04 .010 <.02 <.003 <.04 <.02

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<.040 <.05 <.008 <.01 <.006 <.004 <.006 <.04 .012 <.02 <.003 <.04 <.02

-- -- -- -- -- -- -- -- -- -- -- -- --

<.040 <.05 <.008 -- <.006 <.004 <.006 <.04 .010 <.02 <.003 <.04 <.02

-- -- -- -- -- -- -- -- -- -- -- -- --

<.040 <.05 <.008 E.01 <.006 <.004 <.006 <.04 .012 <.02 <.003 <.04 <.02

<.040 <.05 <.008 E.01 <.006 <.004 <.006 <.04 .012 <.02 <.003 <.04 <.02

-- -- -- -- -- -- -- -- -- -- -- -- --

<.040 <.05 <.008 E.01 <.006 <.004 <.006 <.04 .012 <.02 <.003 <.04 <.02

-- -- -- -- -- -- -- -- -- -- -- -- --

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<.01 <.010 <.02 <.035 <.006 <.01 -- 3 8050

<.01 <.010 <.02 <.035 <.006 <.01 -- 2 8050

<.01 <.010 <.02 <.035 <.006 <.01 -- 2 8050

<.01 <.010 <.02 <.035 <.006 <.01 -- 1 8050

<.01 <.010 <.02 <.035 <.009 <.01 -- 3 8050

<.01 <.010 <.02 <.035 <.009 <.01 -- 3 8050

<.01 <.010 <.02 <.035 <.009 <.01 -- 1 8050

<.01 <.010 <.02 <.035 <.009 <.01 -- 1 8050

-- -- -- -- -- -- -- 1 8050

<.01 <.010 <.02 <.035 <.009 <.01 83 2 55

-- -- -- -- -- -- 95 1 8050

<.01 <.010 <.02 E.013 <.009 <.01 97 2 55

<.01 <.010 <.02 E.010 <.009 <.01 94 3 55

-- -- -- -- -- -- 80 1 8050

<.01 <.010 <.02 <.035 <.009 <.01 79 1 55

-- -- -- -- -- -- 75 1 8050

<.01 <.010 <.02 <.035 <.009 <.01 90 1 55