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<br />I f~ l"~~,~ OLSSO N <br /> <br />ASSOCIATES <br />143 Union Blvd. Suite 700 Lakewood, CO 80228 720-962-6072 <br /> <br /> <br />AL.AM~O.S~A RJVER <br />DIV'E,RSIO,N STRU.CTU.RE INVENTO,RY' <br /> <br />Structure Name: Alamosa Creek Canal <br /> <br />Reported By: Jason Mead <br /> <br />Date: <br /> <br />5/17/06 <br /> <br />Time: <br /> <br />9:30 a.m. <br /> <br />Directions: <br /> <br />From Capulin, head west on State Route 15, go approximately 2 miles and turn <br />north on S.R. 15, go north approximately 1.25 miles and turn west on to an <br />access road along the north side of the ditch and follow it upstream to the <br />headgate. <br />Latitude <br />N37018'03.4" <br /> <br />Longitude <br />W106009'01.8" <br /> <br />Section <br />SE1/4 S1 <br /> <br />Township <br />T35N <br /> <br />Range <br />R7E <br /> <br />Location: <br /> <br />Type: <br /> <br />Manually operated 4' wide steel slide gates (2) <br /> <br />Good D No D Reason Submerged: <br />Condition: Fair ~ Submerged: IV! High river Flow <br />Poor DYes LC:,J <br /> <br />Repair(s) Needed: None. The structure is in fair condition, but according to the water commissioner <br />steel structures do not last long on this river because of the acidity. It may be necessary to <br />eventually replace this structure with a concrete structure that is more resistant to the acidity of the <br />river. <br /> <br />Upstream Configuration: There is a diversion dam that diverts flow along the river to the headgate, <br />which sits along the north bank of the river. The diversion dam consists of corrugated steel and <br />formed concrete. <br /> <br />Comments: New steel has been welded into the structure on the downstream side to temporarily fix <br />some steel degradation that can be attributed to the water acidity. The headgate outlet has a <br />concrete bottom with angle irons on each side that attach to the steel walls. According to the water <br />commissioner there are plans to replace this headgate in the near future, possibly with a concrete <br />structure that is more resistant to the acidity of the river. A downstream return flow structure was <br />encountered that was silted in because of beaver problems. The downstream flow measurement <br />device is a rated section with a Stevens Recorder. <br /> <br />Estimated Range of Cost: N/A <br /> <br />F:\Projects\20060507\Documents\Reports\Alamosa\lnventory Forms\Alamosa Creek Canal.doc <br /> <br />OA No. 2-2006-0507 <br />