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FLOOD01680
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Last modified
11/23/2009 12:58:10 PM
Creation date
10/4/2006 10:16:25 PM
Metadata
Fields
Template:
Floodplain Documents
Designation Number
126
County
Boulder
Community
Unincorporated Boulder County
Stream Name
St. Vrain Canyon upstream of Lyons
Title
Floodplain Information Report - South St. Vrain Canyon upstream of Lyons, Boulder County, CO
Date
2/1/1978
Designation Date
1/1/1979
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />. <br />. <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />18 <br /> <br />TABLE 6 <br />FLOOD FREQUENCY - ELEVATION AND DISCHARGE DATA <br />SOUTH ST. VRAIN CREEK, BOULDER COUNTY, COLORADO <br /> <br /> la-Year Flood 50-Year Flood lOa-Year Flood SOO-Year Flood <br />Ref. Station Stream Bed Crest Peak Crest Peak Crest Peak Crest Peak <br />Point Fr. Mouth Elevation Elevation Discharge Elevation Discharge Elevation Discharge Elevation Discharge <br />Number (Feet) Identif . (Ft. MSL) (Ft. MSL) (cfs) (Ft. MSL) (cfs) (Ft. MSL) (cfs) (Ft. MSL) (cfs) <br />88 523+50 6942.60 6946.53 1<20.00 69q8.90 2790.00 6950.33 3990.00 69 5q. 5 2 8560.00 <br />89 528+90 6963'.30 6967.48 1220.00 6969.98 2790.00 6971.q1 3990.00 6975.25 8560.00 <br />90 534+40 50 feet downstream 6995.70 7000.0:' 1~20.CO 7002.33 2790.00 7003.63 3990.00 7007.74 8560.00 <br /> fran confluence with <br /> M. St. Vrain Creek <br />91 539+40 450 feet above nouth 7015.30 7017.85 590.00 7019.67 1430.00 7020.74 2000.00 7023.35 4070.00 <br /> of M. St. vrain Crk. <br />
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