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<br />O"~OLssON <br /> <br /> <br />ASSOCIATES <br />143 Union Blvd. Suite 700 Lakewood, CO 80228 720-962-6072 <br /> <br />RI,Q.l GRA,NDE RIVER <br />D.I~V'ERSlO.N" ST'RU,C:T'U.R_E I~N_VEN~T'O.RY' <br /> <br />Structure Name: <br /> <br />Excelsior Ditch <br /> <br />Reported By: <br /> <br />Dave Skuodas <br /> <br />Date: <br /> <br />5/11/06 Time: 5 p.m. <br /> <br />From Monte Vista, head southeast on U.S. 160, turn east on East County Road <br />1 South, turn north on County Road 6 East, go approximately 1 .25 miles and <br />turn east onto Stanley Road, go approximately 3/4 of a mile and turn south into a <br />farm and head south to the ditch and follow it to the river. <br />Latitude Longitude Section Township <br />N37 <>34'11 .1 " W1 06001 '50.4" NW 114 S6 T38N <br /> <br />Range <br />R9E <br /> <br />Directions: <br /> <br />Location: <br /> <br />Type: <br /> <br />Manually operated 4' wide steel slide gates (2) <br /> <br />Good [gI No D Reason Submerged: <br />Condition: Fair D Submerged: Yes [gI High River Flow <br />Poor D <br />Repair(s) Needed: Structures are all in good condition, see comments below. <br /> <br />Upstream Configuration: There is an adjustable steel weir with hand cranks that spans the river <br />and diverts river flow to the headgate that sits along the north bank of the river. There is a log trash <br />boom in front of the headgate. <br /> <br />Comments: According to the water commissioner, this structure is unable to divert enough water <br />during low river flows. He also said that the ditch bank downstream of the headgate has washed out <br />during high river flows due to the river overtopping its banks upstream and draining towards the <br />downstream ditch berm. The water commissioner also said that river flow has backed up along the <br />downstream return flow ditch and entered the ditch through the return flow slide gate. The gradient <br />on the return flow ditch is flat or negative, and there is excessive silt along the downstream side of <br />the gate. The water commissioner also said that the downstream adjustment structure was washed <br />out last year and was consequently replaced. The upstream river bank needs to be fortified to help <br />prevent this structure from being washed out again. The return flow gate should also be raised and <br />the return flow ditch adjusted to improve the slope. <br /> <br />Estimated Range of Cost: Medium <br /> <br />F:\Projects\20060507\Documents\Reports\Rio Grande\lnventory Forms\Excelsior Ditch.doc <br /> <br />OA No. 2-2006-0507 <br />