BOARD00724

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

Station: HALFMOON CREEK NEAR MALTA, CO. 10: 07083000
Parameter: STREAM FLOW CFS Statistic: Mean
Year: 1946-2001 Latitude: 39:10:20
Longitude: 106:23:19
County: LAKE Elevation: 9830.00
Drainage Area: 23.60
Monthly Statistics
I Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
# Days r-"" 1554 1705 1650 1705 1650 1705 1736 1680 1704 1650 1705 20149
Avg Day 4.11 3.76 3.77 6.81 45.75 130.4 64.51 35.66 18.09 11.33 7.65 5.15 29.82
Max Day 10.00 9.00 14.00 40.00 191.0 384.0 410.0 177.0 73.00 31.00 20.00 12.00 410.0
Min Day 1.50 1.70 1.20 1.10 3.50 16.00 13.00 8.40 5.70 3.80 2.20 2.10 1.10
# Months 55 55 55 55 55 55 55 56 56 55 55 55 55
SDev Month 1.33 1.22 1.57 2.86 16.23 37.79 48.14 19.28 7.40 3.91 2.61 1.46 8.13
Skew Month 1.04 1.09 1.93 0.844 0.316 0.126 1.60 2.47 1.42 0.983 1.59 101 0.931
Min Month 1.65 1.70 1.20 2.70 17.70 61.20 22.94 14.30 8.03 6.23 4.40 3.19 14.32
Max Month 9.03 7.90 10.83 13.77 79.10 208.3 247.1 128.1 44.27 24.55 16.57 9.65 55.27
Exceedences
1%, 9.00 8.00 11.00 26.00 160.0 300.0 296.0 133.6 50.00 25.96 19.00 10.00 215.5
5% 6.70 6.00 6.80 16.00 120.0 241.5 197.0 81.00 34.00 20.00 13.00 8.50 133.0
10% 5.80 5.10 5.80 13.00 95.00 210.0 160.0 60.00 29.00 18.00 11.00 7.50 89.10
20%, 5.00 4.50 4.50 8.60 72.00 180.0 117.0 46.00 24.00 14.00 9.40 6.40 45.00
50% 4.00 3.60 3.50 5.50 37.00 119.0 69.00 30.00 16.00 10.00 6.90 4.80 9.00
80% 3.00 2.70 2.60 3.50 15.00 79.00 42.00 20.00 12.00 7.60 5.50 3.90 4.00
90% 2.50 2.40 2.30 2.70 9.20 65.00 31.00 17.00 10.00 6.80 4.90 3.50 3.20
95% 2.10 2.00 1.50 2.40 6.90 54.00 26.00 15.00 8.80 6.10 4.40 3.20 2.70
L-~9% 1.50 1.70 1.20 1.70 5.00 35.00 20.00 12.00 7.00 5.20 3.40 2.70 1.70

Printed From: HYDRODATA WEST_1,12-16-03 03:57:10 PM