Laserfiche WebLink
<br />FIgure <br /> <br />2 <br /> <br />3 <br /> <br />, <br /> <br />5 <br /> <br />o <br />7 <br />3 <br />9 <br />10 <br />" <br /> <br />12 <br /> <br />13 <br />" <br /> <br />" <br /> <br />16 <br /> <br />PHOTOGRAPHS <br /> <br />St. VrllTnVlllley-/.kIy 1969 <br />St.VrlllnGreek VTewWesterlylltLJpstraam <br />Limit Of Study <br /> <br />St.VrainGreek <br />Point!>} <br />St. Vrain Grea~ - View Downstream Near <br />Longmont Airport <br /> <br />View Upstream at Reference <br /> <br />St. Vraln Greek. View Downstream at Hover <br />Street, Longmont <br />St. Vrain Creak - View Upsfream From Colorado <br />/lnd Southern Bridge - Low Levee Along Fence LIne <br />St.VrainCreek-VlewDownstreamllt II9-thStreet <br />~c~r Long~nt - !92! Flooe <br />M.ain Highway South of Longmont-1921 Flood <br />Longmont, Colorado June 1921 <br />Longmont,Colorado June 1921 <br />Floo<ledF"""landNearLon<)ICOnt-St.Yrain <br />Creek,9Mi.lyl<),)7 ' <br /> <br />Upstream FrOM U. S. H;gn~y 287 at <br />St. ural" Creek, 9 May 1957 <br />Boston Avenue Just East of Bridfle <br />South Pratt Street. AOPut 500 Feet <br />Bridge <br />Just ijorth of St. '/rdir\Cr"",kat$o...thrrdn <br />Street, Looking East <br /> <br />Longmont- <br /> <br />South of <br /> <br />Sewage Treatment Plant <br /> <br />I <br /> <br />Pa<J": <br /> <br />Boul<ler Creek enters a faw mllas turther do,ms'tream. The chann€i beds <br />o' ~jor'th a nd Sou t.~ St. V r1\ i n Cree ks :> I ore II tJO-J t I 20 . (Jet per 0111 () , <br />wniletnemcl;nstredmf3lls22feetpermile inthc!>lmil€sfrun <br />Lyons to the mouth. A map or the St. Vr~in Creek basin a~e the east <br />Goulder County I I na "poears on t~e Ins id<J fron~ C<:lVer 01 this report. <br /> <br />Cover <br /> <br />2 <br /> <br />3 <br /> <br />The study r"3ch lor 'this r"port e:x'tends e.Lmiles frorn a <br />county road bridge cros~ing 3.1 miles west of longmont, ColoradO to <br />" road bridge 1.7 miies oost of Longmont, at tne ibJlOer County-wale <br />County line. Upstre3mtrO"!1Long"'0nttheSt.VralnCreekchannells <br />bordGrodbypastureandcrop i"nds. The banks are lined with brush <br />growth and cottonwoods. FlOOd plain wIdths are shown in 'table I. <br />Thechanno>1 itso>lt Is irregular Incross soctlon through 'the study <br />re~ch, con,isting nt h;g~ h8~~s 7no tn ,70 teat ap~~T wiTh the low <br />channel meandering between these side limits. Thechannoll>ed cOn- <br />si st:> of shifting sandbars strewn with cobble~ and SMa II bou Idars. <br />Channa I dimensions and siopes for variou5 locations in the study <br />reaCh are also shown in table I. The lollowing photographs illustrate <br />stre~m chara:tcristic$ 01 St. Vrain Creek in the stJdy r6Qch. <br /> <br />3 <br /> <br />, <br /> <br />, <br />5 <br /> <br />" <br /> <br />15 <br />15 <br />" <br /> <br />" <br /> <br />17 <br />21 <br /> <br />r <br /> <br />- <br /> <br />- <br /> <br />- <br /> <br />1 <br /> <br />- <br />~ <br /> <br />~ <br /> <br />" <br /> <br />- <br /> <br />22 <br />" <br /> <br /> <br />,,;,.,".-'"' <br />" ':-~~<' <br />....,.c.". <br />-,~ . _.. <br />.."",--.-.-, <br /> <br />':.:IillI~ <br /> <br />-\, -"", <br /> <br />F ,gure I. Sf. V r" i n Cr.~€k - ~ i.:w wesrer I y at upstream I im; t or ~t"dy. <br /> <br />2 <br />