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<br />NDRTH
<br />
<br />BOULDER
<br />
<br />FLOOD
<br />
<br />PLAINS
<br />
<br />BOULDER. COLORADO
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<br />
<br />Scale I~" 1000'
<br />
<br />LEGEND
<br />~-- Flood Plain Limit
<br />
<br />~~ Flood Plain Well Defined
<br />
<br />=.~ Flood Plain Not Well Defined
<br />
<br />Notes'
<br />r. Where Flood Plains Not Well Defined, Substantial
<br />Wafer Flows in Streels Wifh 3" to 12" Depth Over
<br />Lawns and Open Areas.
<br />
<br />2. Fourmile Canyon Creek 6 Twomile Conyon Creek Will
<br />Deposif Silt,Sand, Gravel, and Rocks (Upt03'Oiam.l in
<br />Flood Ploins to Broodway and Beyond.
<br />
<br />3. Bpulder Creek Flood Plain From U.S. Corps of Engineers.
<br />
<br />4. Fourmile Canyon Creek Flood Water Flows to Wonderland
<br />Creek, and Twomile Conyon Creek Flows to Goose Creek.
<br />
<br />5. Irrigatioll DItches Moy Corry Flood Waters 10 Areas 110t
<br />Sho....n as Flood Plain. These Areas Callnot Be Defined
<br />Accurately.
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<br />
<br />MAP OF NORTH aOULOER FLOOD PLAINS
<br />FOR 100 YEAR STORM RUNOFF
<br />
<br />WRIGHT-MCLAUGHLIN ENGINEERS
<br />flU Irfill SI DutU, tlllllh
<br />
<br />Drawing No. 3 of 29
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