FLOOD00875

• County: Grand
• Community: Granby
• Title: Floodplain Information Report - Town of Granby
• Date: 3/1/2002
• Prepared For: Granby
• Prepared By: CWCB
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Granbv Floodplain Desianation
Hydraulics Summary
Output from Flowmaster

100-yr Peak
Cross- Design Discharge Depth Top Width Velocity
Section Point (cfs) (feet) (feet) (ft/s)
A1 (1) 53 0.39 60 2.44
A2 Aa 67 0.48 39 3.85
A3 (1) 33 1.02 26 4.47
A4 Ab 0 0.56 39 3.59
A5 Ac 0 0.51 142 1.66
81 Ba 69 0.55 58 3.57
82 (1) 34 0.54 42 5.44
B3 Bb 0 0.56 42 4.55
B4 Bc 50 0.47 39 3.48
B5 (1) 0 1.47 25 5.8
B6 Bf 0 0.60 330 2.07
B7 (1) 0 1.39 177 2.37
B8 Bg 0 0.57 316 1.78

Notes:
(1)

Cross-section not located at a design point. The following
methodology was used to estimate flow at cross-section
A 1: Approximately 80% of Aa
A3: Average of Aa and Ab
B2: Average of Ba and Bb
B5: Approximately 95% of Bd
B7: Average of Bf and Bg

8/20102
hydraulics.xls

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