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Watershed <br />Number <br />Watershed <br />Name <br />Percent <br />USFS € <br />I land <br />Pre -fire 1, <br />Estimated <br />Discharge <br />(cfs) <br />Post -fire <br />Estimated <br />Discharge <br />(cfs) <br />% of <br />Pre -fire <br />flow <br />10190006060216 1 <br />White Pine A <br />96 1 <br />30.6 1 <br />69 I <br />226% <br />10190006060214 <br />White Pine <br />3 C <br />21.6 1 <br />35 <br />160% <br />101900070303 <br />Young Gulch A <br />58 <br />121 <br />511 <br />422% <br />101900070303 <br />Young Gulch B <br />21 <br />166 <br />558 <br />336% <br />101900070303 <br />Young Gulch C <br />0 <br />56 <br />138 <br />246% <br />_ <br />101900070303 <br />Young ulch D <br />g <br />96 � <br />369 <br />384% <br />101900070303 <br />Young Gulch E <br />19 <br />143 ' <br />, <br />506% <br />101900070303 <br />Young Gulch F <br />f 77 <br />69 <br />_724 <br />195 i <br />283% <br />A map of the percent flow increase by watershed is included at the end of the report. <br />PART V - SUMMARY OF ANALYSIS <br />A. Critical Values / Resources and Threats <br />Critical values, resources and threats are <br />HUMAN LIFE / SAFETY and PROPERTY <br />Threats to life and safety and property exist in valley bottom areas and in steep burned gulches <br />throughout and downstream from the burned area. Residents and road users will be exposed to <br />increased risk of flooding and debris flow. Houses and other structures, driveways, other private <br />property, Forest Service recreation facilities, and roads and trails located in valley bottoms adjacent to or <br />in the flood prone areas or near stream channels are at increased risk for flooding and debris flow. <br />The small unincorporated community of Poudre Park is located near the confluences of two large and <br />heavily burned watersheds: Hill Gulch and Falls Gulch. Both watersheds have already experienced flood <br />and debris flows from a relatively small rainfall event on July 6, 2012. Similarly, the Bellvue community is <br />located on the Mill Gulch drainage which receives stormwater runoff from Long Brown Gulch, Labeau <br />Gulch and Devil Gulch. There is the potential for significantly increased stormwater and flood flows from <br />these watershed under post -fire conditions. <br />In several locations, structures and roads are located on alluvial and debris flow fans at the outlets of <br />severely burned gulches and are at increased risk for debris flows. <br />Most of the major irrigation canals located east of the High Park fire burn area follow contours in a north - <br />south orientation. There are many locations where tributary drainages flowing in a west to east direction <br />are passed over or under the irrigation facilities. There is an increased risk for flood flows and sediment <br />to enter irrigation canals and adversely impact the operation of these facilities. Water diversion <br />infrastructure is at risk due to sediment and debris accumulation. Numerous ponds and small reservoirs <br />within the burned area are at increased risk of filling with sediment and /or dam failure. <br />High Park Fire Emergency Stabilization Plan Page 8 <br />