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<br />. <br /> <br />RIVER FLOOD PROJECT <br /> <br />PURPOSE AND SCOPE OF REPORT <br /> <br />The purpose or this report is to present the rindings or several <br />months of studY to determine the most eFFective and economical <br />measures to control the erosion and Flooding problems along the <br />Colorado River immediately west of the City of Grand Junction. <br />The report will describe and illustrate protective measures ror <br />the study reach including associated costs and beneFits. <br /> <br />L I M ITS OF STUDY <br /> <br />The study reach For this report extends rrom <br />where diking in 1984 terminated, west and <br />Redlands Parkway 8pidge, a total distance of <br /> <br />the Reece Lake area, <br />downstream to the <br />two river mi les. <br /> <br />DESCRIPTION OF THE STUDY AREA <br /> <br />This reach or the Colorado River is a good example of a mature <br />river with Fully developed meanders located approximately two and <br />one halF river miles below the mouth or the Gunnison RIver. The <br />area to the north is zoned industrial and has been partially <br />developed. Also a new road connecting Highway 50 at 24 Road to <br />the Redlands, a predominantly residential area. has been <br />constructed across the rloodplain with a bridge crossing the main <br />channel of the river at the west end or this project. The south <br />side is older residential on large parcels located in the <br />Floodplain for approximately one Quarter of a mile or the lenoth <br />of the project. The remaining distance along the south side is <br />open park property dominated by the Mesa County owned Connected <br />Lakes Park. <br /> <br />The Colorado River impacts the area along the <br />and the open park land by extensive river <br />overland Flows. <br /> <br />Redlands Parkway <br />bank erosion and <br /> <br />FLOOD HISTORY <br /> <br />The Colorado River has a long history of rlooding. <br />usually results From rapid snowmelt or an above average <br />frbm mid-May through early July. <br /> <br />Flooding <br />snowpack <br /> <br />Historically, rloods on the Colorado River have disrupted <br />highway and railroad trafric, eroded Farmlands. damaged and <br />destroyed crops, eroded channel banks and roadway embankments, <br />innundated and washed away structures, and destroyed natural <br />vegetation. Flood rlows on the river have been recorded by <br />