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Statistics of monthly and annual mean discharges
[m, more than 1 year of occurrence]
__________________________________________________________________________________________________________
Maximum Minimum Mean
______________________ ______________________ _____________________________________________
Water year Water year Standard Coeffi- Percentage
Month Discharge of Discharge of Discharge deviation cient of of annual
(ft3/s) occurrence (ft3/s) occurrence (ft3/s) (ft3/s) variation discharge
__________________________________________________________________________________________________________
October 740 1994 48.3 1911 353 204 0.58 7.81
November 688 1907 79.3 1911 341 169 0.49 7.56
December 489 1994 79.9 1911 300 120 0.40 6.64
January 400 1994 80.0 m 253 97.3 0.38 5.60
February 439 1994 70.0 1912 236 95.5 0.41 5.22
March 650 1907 70.0 1912 293 133 0.45 6.48
April 652 1907 180 1913 397 150 0.38 8.79
May 952 1997 221 1911 536 210 0.39 11.9
June 965 1906 169 1911 559 215 0.39 12.4
July 932 1906 108 1911 498 226 0.45 11.0
August 780 1905 64.8 1910 389 218 0.56 8.61
September 817 1993 32.6 1910 361 227 0.63 8.00
Annual 609 1906 123 1911 378 124 0.33 100
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Monthly and annual flow duration, in cubic feet per second
______________________________________________________________________________________________________________________
Percentage
of days
discharge Jan. Feb. March April May June July Aug. Sept. Oct. Nov. Dec. Annual
equaled or
exceeded
______________________________________________________________________________________________________________________
95 81.8 72.7 74.5 169 236 211 121 88.8 56.5 90.2 91.0 81.4 87.7
90 83.6 82.4 111 207 275 257 195 130 112 114 136 111 133
85 114 87.4 135 239 293 310 240 164 133 143 149 148 171
80 185 157 187 254 320 331 274 194 153 164 166 170 204
75 192 186 195 268 356 353 309 214 192 184 202 218 231
70 197 204 217 283 392 409 344 236 208 207 236 258 258
65 240 230 250 317 425 465 384 271 219 239 278 273 277
60 249 235 257 334 445 504 424 295 264 288 313 285 296
55 257 241 266 354 470 558 462 319 303 314 324 295 314
50 273 249 276 373 524 588 501 356 328 325 333 305 333
45 281 258 303 400 544 611 538 382 346 337 342 321 357
40 288 264 315 427 585 638 568 420 366 359 363 335 384
35 295 269 330 445 640 668 599 461 404 423 384 347 416
30 304 277 348 480 674 700 650 497 452 455 406 364 457
25 318 299 368 505 706 722 702 541 508 507 433 378 508
20 328 313 381 541 731 744 724 595 569 564 490 389 567
15 369 323 399 587 761 778 747 688 657 599 559 452 626
10 ng 335 441 635 818 844 789 746 736 638 586 477 705
5 ng 415 ng 682 934 924 839 792 788 694 647 501 776
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Probability of annual high discharges
[ng, statistic not given]
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Maximum average discharge
(ft3/s)
___________________________________________________________
Recurrence Maximum
Exceedance interval instantaneous 3-day period 7-day period 15-day period 30-day period
probability (years) (ft3/s)
__________________________________________________________________________________________________
0.99 1.01 224 210 198 190 181
0.95 1.05 334 1334 328 311 296
0.90 1.11 405 1405 1397 1385 371
0.80 1.25 503 1503 1493 1478 1464
0.50 2 723 1723 1709 1688 1667
0.20 5 975 940 928 905 880
0.10 10 1,110 1,010 1,000 989 966
0.04 25 1,260 1,060 11,040 11,010 1980
0.02 50 1,350 1,080 11,060 11,030 11,000
0.01 100 1,440 1,100 11,080 11,050 11,020
0.005 200 1,510 1,110 11,090 11,060 11,030
0.002 500 1,590 ng ng ng ng
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1 Statistical adjustment based on correlation between
3-, 7-, 15-, and 30-consecutive-day periods.
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Annual peak discharge and corresponding gage height, period of record
[--, no data]
_____________________________________________________________________________________
Gage Peak Gage Peak
Water Date height discharge Water Date height discharge
year (feet) (ft3/s) year (feet) (ft3/s)
_____________________________________________________________________________________
Annual peak discharge, by year, and corresponding gage height
Annual peak discharge, by year, and corresponding gage height
1904 June 23 -- 1,075 1915 July 19 2.80 837
1905 August 7 4.00 855 1916 June 29 3.00 982
1906 -- 4.25 1,020 1917 October 1 2.45 613
1908 June 13 4.10 921 1992 August 13 5.68 335
1909 September 15 3.55 580 1993 September 20 8.10 842
1910 -- 3.30 449 1994 October 3 8.09 840
1911 April 19 2.90 274 1995 April 18 7.18 714
1912 July 8 3.20 402 1996 May 19 8.17 961
1913 July 5 3.85 758 1997 May 11 8.40 994
1914 June 27 2.40 584
Annual peak discharge, from highest to lowest, and corresponding gage height
1904 June 23 -- 1,075 1913 July 5 3.85 758
1906 -- 4.25 1,020 1995 April 18 7.18 714
1997 May 11 8.40 994 1917 October 1 2.45 613
1916 June 29 3.00 982 1914 June 27 2.40 584
1996 May 19 8.17 961 1909 September 15 3.55 580
1908 June 13 4.10 921 1910 -- 3.30 449
1905 August 7 4.00 855 1912 July 8 3.20 402
1993 September 20 8.10 842 1992 August 13 5.68 335
1994 October 3 8.09 840 1911 April 19 2.90 274
1915 July 19 2.80 837
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Monthly and annual mean discharges, in cubic feet per second
[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]
__________________________________________________________________________________________________________________________________
Year Oct. Nov. Dec. Jan. Feb. March April May June July Aug. Sept. Annual
__________________________________________________________________________________________________________________________________
1904 -- -- -- -- -- -- -- 574.1 695.7 512.6 365.4 329.0 --
1905 325.8 328.0 347.0 300.0 250.0 320.5 292.2 515.9 612.9 718.5 779.6 749.7 463.0
1906 613.5 557.5 450.0 382.0 260.0 382.0 498.9 772.2 965.0 931.6 742.1 726.6 608.8
1907 673.9 688.5 480.0 369.0 261.0 650.0 651.8 709.5 692.0 564.5 359.0 302.7 535.2
1908 337.4 336.0 301.1 260.0 230.0 200.0 312.3 420.6 813.2 685.6 453.5 361.6 392.8
1909 301.0 261.3 220.0 190.0 152.0 261.0 398.6 460.0 491.6 342.6 375.5 549.0 334.0
1910 510.7 425.8 389.6 325.0 240.0 284.8 434.3 416.8 293.9 162.6 64.8 32.6 298.9
1911 48.3 79.3 79.9 80.0 85.0 125.3 228.9 221.0 168.6 108.1 125.8 127.7 123.2
1912 163.8 128.2 110.0 80.0 70.0 70.0 181.4 284.3 324.8 278.2 216.2 203.5 176.1
1913 193.4 201.1 164.0 103.0 76.8 130.0 179.9 266.3 242.6 322.2 261.0 359.2 209.0
1914 320.4 362.8 348.7 280.0 190.0 185.0 248.6 306.3 409.3 522.4 443.3 379.7 334.0
1915 407.5 418.6 327.5 243.0 335.0 264.4 282.8 369.8 555.9 764.1 635.8 474.1 423.8
1916 432.4 369.1 321.5 211.2 256.4 293.8 392.1 671.2 774.3 729.4 549.0 584.6 465.9
1917 589.1 526.0 379.0 300.3 264.6 274.7 440.6 532.2 402.2 254.1 123.8 86.9 348.3
1992 -- -- -- -- -- -- -- -- -- -- 232.7 207.8 --
1993 138.5 142.6 140.6 180.8 209.3 313.6 357.2 453.1 702.0 745.2 759.3 816.6 413.9
1994 740.1 571.4 489.2 400.0 439.3 443.1 549.1 740.8 568.5 452.0 308.8 226.7 494.7
1995 211.4 217.1 279.4 247.6 293.6 396.9 631.9 665.5 454.4 358.5 244.2 183.0 348.8
1996 233.9 332.2 279.5 281.3 315.3 336.2 459.3 855.2 754.2 435.6 218.3 134.0 386.3
1997 111.8 198.8 291.2 320.9 313.8 335.9 604.9 952.2 706.4 576.7 520.9 389.2 444.3
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