Estimation of groundwater recharge using neutron probe moisture readings near Golden, Colorado

Estimation of groundwater recharge using neutron probe moisture readings near Golden, Colorado Kiusalaas, Nicholas J. ; Poeter, Eileen P. Groundwater flow -- Colorado -- Golden Water-supply -- Colorado -- Golden Seepage "November 16, 1992" "CWRRI Completion Report No. 165" "Grant No. 14-08-0001-G1551-04, Project No. 11" ""... was financed in part by the U.S. Dept. of the Interior, Geological Survey, through the Colorado Water Resources Research Institute ..."" 197 p. Includes bibliographical references (p. 148-153) To better understand recharge processes under natural conditions in the Denver Basin, a vadose zone monitoring study was conducted from September 1991 through September 1992 at a site near Golden, Colorado. Six access tubes were monitored with a neutron probe to a depth of 8.75 feet to determine moisture profiles several times a month. Moisture characteristic curves were developed for soil samples which were extracted during access tube installation. The van Genuchten function was fitted to experimental moisture characteristic curve data and combined with saturated hydraulic conductivity from laboratory analysis to estimate unsaturated hydraulic conductivity. Numerical analysis based on moisture profiles and hydraulic properties was used to estimate vertical flux. Colorado State University. Libraries Colorado Water Resources Research Institute Geological Survey (U.S.) 1992 text ; image application/pdf COMP165.pdf CCRICWRI100019CRPT eng Completion report (Colorado Water Resources Research Institute) ; no. 165 Golden (Colo.) c1992 Colorado Water Resources Research Institute

Estimation of groundwater recharge using neutron probe moisture readings near Golden, Colorado

Kiusalaas, Nicholas J. ; Poeter, Eileen P.

Groundwater flow -- Colorado -- Golden

Water-supply -- Colorado -- Golden

Seepage

"November 16, 1992"

"CWRRI Completion Report No. 165"

"Grant No. 14-08-0001-G1551-04, Project No. 11"

""... was financed in part by the U.S. Dept. of the Interior, Geological Survey, through the Colorado Water Resources Research Institute ...""

197 p.

Includes bibliographical references (p. 148-153)

To better understand recharge processes under natural conditions in the Denver Basin, a vadose zone monitoring study was conducted from September 1991 through September 1992 at a site near Golden, Colorado. Six access tubes were monitored with a neutron probe to a depth of 8.75 feet to determine moisture profiles several times a month. Moisture characteristic curves were developed for soil samples which were extracted during access tube installation. The van Genuchten function was fitted to experimental moisture characteristic curve data and combined with saturated hydraulic conductivity from laboratory analysis to estimate unsaturated hydraulic conductivity. Numerical analysis based on moisture profiles and hydraulic properties was used to estimate vertical flux.

Colorado State University. Libraries

Colorado Water Resources Research Institute

Geological Survey (U.S.)

1992

text ; image

application/pdf

COMP165.pdf

CCRICWRI100019CRPT

eng

Completion report (Colorado Water Resources Research Institute) ; no. 165

Golden (Colo.)

c1992 Colorado Water Resources Research Institute