Laserfiche WebLink
~.....a. <br /> <br />1.0 S[JPL~fARY <br />A study was performed on a 4.6 mile reach of. the Yampa <br />River near Craig, Colorado on 28-31 AugusC 1978 to determine if <br />the river gains or loses flow in the vicinity of Big Bottom. <br />Flow and weather conditions were considered ideal. Field data <br />were consistent and the hydrologists felt that most of the data <br />gathered were excellent. <br />The results of the investigation were as follows: <br />• The reach of interest was from S.H. 13 to <br />the confluence of the Yampa River and Williams <br />Fork (the area known as Big Bottom). A net <br />loss of eight to nine cubic feet per second <br />(cfs), exclusive of evapotranspiration, was <br />• observed across this reach. A 2.2 mile por- <br />tion of this reach was iden~ified as t:~a <br />area in which all potential and confirmed <br />surface/ground-water exchanges were occur- <br />ring. <br />• The river was losing 10 to 17 cfs to ground- <br />water recharge over an 800 foot stretch be- ~~ , <br />ginning 1.0 miles upstream of the confluence <br />with William Fork.. ~ <br />• As suggested by the difference between the <br />above two loss rates, some ground-water dis- <br />charge to the Yampa River may have been oc- <br />. curring over a one mile stretch beginning <br />two miles docrostream of the S.H. 13 bridge. <br />However, the data were inconclusive and fur- <br />ther study is required to verify this. <br />1-1 <br />