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Last modified
1/25/2010 7:11:31 PM
Creation date
10/5/2006 2:54:04 AM
Metadata
Fields
Template:
Floodplain Documents
Designation Number
48
County
Summit
Community
Breckenridge
Basin
Colorado Mainstem
Title
Floodplain Information Report - Breckenridge, Colorado: Part II - French, Lehman and Sawmill Gulches
Date
11/1/1974
Designation Date
1/1/1976
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />~ <br />, <br />. <br />}. <br />. <br />, <br /> <br />- 3 - <br /> <br />Drainage areas for the major tributaries to the Blue <br />River in the Breckenridge vicinity are shown in Table 1. <br /> <br />Table 1 <br /> <br />DRAINAGE AREAS <br /> <br />l <br />~ . <br />~ <br /> <br />Blue River above gage <br />Blue River above Tarn <br />Lehman and Carter Gulch <br />Illinois Gulch <br />Sawmill Gulch <br />French Gulch <br />North Barton Gulch <br />Swan River <br /> <br />~ <br />, <br />, <br /> <br />119.0 sq.mi. <br />43.5 sq.rni. <br />3.0 sq.mi. <br />3.5 sq.mi. <br />2.5 sq.mi. <br />11.0 sq.mi. <br />4.6 sq.mi. <br />38.5 sq.rni. <br /> <br />Most of the drainage areas are uniform in size except for <br />the Swan River which contains 30% of the area above the U.S. <br />Geological Survey gage. Approximately 80% of the drainage <br />basin above Breckenridge is controlled by the Goose Pasture <br />Tarn. <br /> <br />The climate of the Breckenridge area is cool with an <br />average yearly temperature of about 35oF. Annual precipitation <br />averages 18 inches with approximately half of the precipitation <br />occurring as snowfall. Snow depth variations recorded at a <br />snow course station on Hoosier Pass reveal that snow depths <br />can range from the 18 inches in February of 1944 and 1945 to <br />over 66 inches recorded in April of 1952 and 1965. Snow depths <br />also vary considerably with elevation. The average April 1 <br />snow depth recorded at Hoosier Pass is approximately 47 inches, <br />whereas the average snow depth recorded in Frisco, a station <br />much lower in the basin, for April 1 is 28.7 inches. <br /> <br />l, <br /> <br />DEVELOPMENT IN THE FLOOD PLAIN <br /> <br />The natural flood plain of the Blue River in the Brecken- <br />ridge area has largely been obliterated by construction within <br />the town. The initial encroachment on the flood plain in <br /> <br />~ <br /> <br />~~~~-~~~~ <br />
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