BOARD00820

• Board Meeting Date: 7/26/2006
• Description: ISF Section - Pine River Proposed Water Donation - La Plata County
• Board Meetings - Doc Type: Memo

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Station: LOS PINOS RIVER AT IGNACIO, COLO.
Parameter: STREAM FLOW CFS
Year: 1930-1961
Slate: CO
County: LA PLATA

10:
Statistic:
Latitude:
Longitude:
Eleva1ion:
Drainage Area:

09354000
Mean
37:07:45
107:37:35
6468.85
448.00

Monthly Statistics

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Jan Feb Mar Apr May Jun Jul Aug Sep Ocl Nov Dec Ann
# Days 961 876 961 930 961 930 961 961 930 961 930 961 11323
I Avg Day 75.52 86.16 157.2 428.9 604.1 595.2 232.5 125.4 117.5 123.0 87.31 85.32 226.7
Max Day 320.0 316.0 722.0 2440 2880 3220 4530 2690 1300 1800 564.0 480.0 4530
Mln Day 21.00 11.00 26.00 3.70 8.30 3.40 1.50 1.90 1.30 6.80 0 15.00 0
# Months 31 31 31 31 31 31 31 31 31 31 31 31 31
SDev Month 50.34 51.17 103.7 373.6 567.5 616.2 322.5 146.3 96.77 161.8 83.92 65.84 159.6
Skew Month 3.25 2.16 1.61 0.691 0.983 0.930 2.49 3.15 2.20 3.34 2.38 2.58 0.553
Mln Month 37.26 35.89 47.65 17.47 32.39 8.74 3.15 6.55 18.23 9.73 11.96 37.65 36.83
Max Month 287.5 260.0 507.7 1284 2042 2076 1317 770.1 450.8 852.2 381.1 302.7 595.0
Exceedences
1% 297.0 293.2 634.8 1734 2540 2590 2014 1150 632.2 952.0 484.4 443.9 2020
5% 208,0 221.4 436.0 1355 2030 2040 916.9 401.5 388.0 494.3 247.0 223.0 1110
100/. 100.0 176.0 344.9 1160 1730 1680 569.8 236.9 276.0 311.8 200.0 140.0 580.0
20'/, 89.00 93.00 226.0 763.0 1060 1240 319.2 154.0 168.0 166.0 104.0 100.0 270.0
500/. 60.00 69.00 110.0 265.0 393.5 290.0 90.00 72.00 71.00 57.00 62.00 62.00 80.00
80% 45.00 51.00 66.00 67.00 57.00 51.00 32.20 19.20 37.00 28.00 30.00 45.00 45.00
90'/. 44.00 45.00 54.00 39.00 39.00 30.00 5.42 7.02 16.00 20.00 21.00 40.00 28.00
95-1. 36,00 40.00 49.00 20.50 28.00 7.65 4.00 4.30 9,70 13.05 15.00 35.00 14.00
99% 28.00 35.00 36.61 13.00 15.00 4.50 2.22 2.60 3.52 8.30 10.30 20.61 4.00

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Pr(nted From: H),DRODI\TA WEST_1, Q9-14..(l4 1Q:19'.00 AM