BOARD02512

• Board Meeting Date: 1/27/2004
• Description: ISF Section - Instream Flow Appropriations - Fourmile Creek
• Board Meetings - Doc Type: Memo

Station: CHALK CREEK (UPPER STATION) NEAR ST. ELMO, CO. 10: 07090000
Parameter: STREAM FLOW CFS Statistic: Mean
Year: 1913-1919 Latitude: 38:42:29
State: CO Longitude: 106:19:12
County: CHAFFEE Elevation: 9670.00
Drainage Area: 48.00
Monthly Statistics
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ~
mm
# Days 186 169 186 180 186 180 186 186 180 186 180 186 2191
Avg Day 9.01 8.26 9.73 19.09 104.6 222.4 107.0 47.47 26.40 19.39 12.51 10.77 49.81
Max Day 13.00 11.00 31.00 88.00 320.0 432.0 296.0 123.0 75.00 32.00 23.00 17.00 432.0
Min Day 7.00 7.00 7.00 8.00 18.00 84.00 19.00 21.00 14.00 12.00 7.00 9.00 7.00
# Months 6 6 6 6 6 6 6 6 6 6 6 6 6
SDev Month 1.33 0.997 1.75 6.05 31.15 61.79 38.07 13.07 7.95 4.13 2.40 1.21 7.61
Skew Month 1.11 0.505 1.31 1.28 -0.454 0.180 1.54 -0.257 1.19 0.519 1.75 1.25 -0.246
Min Month 8.00 7.00 8.00 13.73 66.71 140.8 74.39 29.94 17.93 14.81 10.37 10.00 38.15
Max Month 11.23 9.75 12.87 29.83 137.4 307.2 177.2 84.29 40.27 24.65 17.07 12.77 60.73
Exceedences
1% 12.14 10.31 31.00 88.00 283.9 431.2 277.9 117.0 64.60 32.00 21.40 16.14 350.3
5% 12.00 10.00 14.70 50.00 244.1 395.0 218.0 90.00 46.00 27.70 20.00 13.00 218.0
10% 12.00 10.00 12.00 34.00 213.2 359.0 167.4 80.40 40.00 26.00 17.00 13.00 149.8
20% 10.00 9.10 10.00 25.00 164.8 311.0 143.0 65.00 33.00 24.00 15.00 12.00 79.00
50% 8.00 8.00 9.00 14.00 86.00 204.0 103.0 41.00 24.00 18.00 12.00 10.00 18.00
80% 8.00 7.00 8.00 11.00 46.20 143.0 65.00 28.00 20.00 15.20 10.00 9.20 9.00
90% 8.00 7.00 8.00 10.00 23.00 118.0 50.80 26.00 16.00 14.00 9.00 9.00 8.00
95% 8.00 7.00 8.00 9.00 20.30 102.0 46.00 24.00 15.00 13.00 8.00 9.00 8.00
99% 7.00 7.00 7.00 8.00 18.00 86.00 31.18 21.86 14.00 12.00 7.80 9.00 ,7.00 I

Printed From: HYDRODA TA WEST _1, 07.21.03 0829:16 AM