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Last modified
11/23/2009 1:42:50 PM
Creation date
10/4/2006 9:12:54 PM
Metadata
Fields
Template:
Floodplain Documents
County
Summit
Community
Breckenridge
Stream Name
Blue River
Title
Breckenridge Floodplain Information 1975
Date
1/1/1975
Prepared For
Breckenridge
Prepared By
Leonard Rice Consulting Water Engineers, Inc.
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />- 3- <br /> <br />- ,- <br /> <br />119.0 sq.mi. <br />43.5 sq.mi. <br />3,0 sq.mi. <br />3.5 sq.mi. <br />2,5 sq.mi. <br />11.0 sq.mi. <br />U sq.mi. <br />38.5 5q.mi. <br /> <br />Breckenridge was accomplished early in the 1900's when dredge <br />mining was first active. The tailings left from the dredge <br />operation are still in existence today and may be seen <br />immediately north of the town. Construction within the past <br />few years has further encroached into the Blue River channel <br />reducing the area available for safe passage of a major flood. <br />The mine tailings which once formed a very uneven and rough <br />surface have been leveled off to allow development. The <br />channel bed of the Blue River has been considerably modified <br />from its natural condition. Present uses adjacent to the <br />Blue River include commercial, residential, recreational and <br />related uses. There are virtually no light industrial uses <br />within the city limits. <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 />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 />Development in the study area can be expected to continue. <br />The town is the county seat for Summit County and serves a5 a <br />winter recreation and ski area. The town presently has a <br />summer population between 650-800 persons. During the winter <br />it increases to over 2500, not including the skiers who are <br />in the town for only one day. There is an extensive winter <br />resort economy whiCh provides employment for the per:nanent <br />population. The town is !'llso trying to dev",lop more summf'r <br />activities. <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 climat~ of thp Breckenridg~ area is cool with rln <br />average yearly temperature of about 350F. Annual precipitation <br />averages 18 inChes with approximately half of the precipitation <br />occurring as snowfall. Sno.... depth variations recorded at a <br />snow course station on Hoosier Pass reveal that snow depths <br />can ranqe from the 18 inches in February of 1944 a~d 1945 to <br />oVer 66 inches recorded in April of 1952 and 1965. Snow depths <br />also vary considerably with elevation. The average April I <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 />DEVELOP:-!ENT IN TliE: FLOOD PLAIN <br /> <br />I <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 />C\> <br /> <br />i.~",'dR~,r.r"'"I;"lW,~.fr"Pi""1nC <br /> <br />-~- <br /> <br />--------------- - -- <br /> <br />~------- <br /> <br />C\> <br /> <br />1".wCR,,,,,C(\lV.l.~10I)Ii11,,fnF~,,,,'nc <br />
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