Identifying groundwater recharge pathways in the Moscow sub-basin

J.H.J. Candel, E.S. Brooks, Eric Verhoeff, Mariana Dobre, Ricardo Sanchez-Murillo, George W. Grader, Jr., R. Dijksma

Research output: Contribution to conferenceAbstractAcademic

Abstract

Continual groundwater decline over the last 80 years in the Moscow-Pullman basin is motivating communities to explore a wide range of strategies ranging from reservoir development to direct injection to aquifers to ensure a sustainable regional water supply. Historic pumping records indicate the shallow Wanapum aquifer in the Moscow region does receive recharge however it is less certain that the deeper Grand Ronde aquifer is receiving any significant recharge. Moreover there is not a clear consensus in the region of the location of the major aquifer recharge flow paths. In this study we used both distributed hydrologic modeling based on detailed soil mapping and stable isotope tracers to explore and evaluate potential groundwater recharge pathways in the Moscow sub-basin. Modelling results indicate that subsurface water flow off the forested granitics in eastern margin of the sub-basin is likely a significant source of recharge. Biweekly water samples taken from 22 wells and 2 springs and high frequency streamflow and precipitation samples collected over a two year period throughout the Moscow sub-basin were analyzed for stable isotopes of hydrogen and oxygen. Frequency analysis of these stable isotope data suggest the some wells are receiving recharge. Furthermore many of these wells exist on the eastern margin of the sub-basin lending further support to the hypothesis that this region should be considered to be a critical ground recharge zone.
Original languageEnglish
Publication statusPublished - 2016
EventRocky Mountain Section - 68th Annual Meeting - 18–19 May 2016 - Moscow, Idaho, United States
Duration: 18 May 201619 May 2016

Conference

ConferenceRocky Mountain Section - 68th Annual Meeting - 18–19 May 2016
CountryUnited States
CityMoscow, Idaho
Period18/05/1619/05/16

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recharge
groundwater
basin
aquifer
stable isotope
well
frequency analysis
subsurface flow
modeling
streamflow
water flow
pumping
water supply
tracer
hydrogen
oxygen
soil
water

Cite this

Candel, J. H. J., Brooks, E. S., Verhoeff, E., Dobre, M., Sanchez-Murillo, R., Grader, Jr., G. W., & Dijksma, R. (2016). Identifying groundwater recharge pathways in the Moscow sub-basin. Abstract from Rocky Mountain Section - 68th Annual Meeting - 18–19 May 2016, Moscow, Idaho, United States.
Candel, J.H.J. ; Brooks, E.S. ; Verhoeff, Eric ; Dobre, Mariana ; Sanchez-Murillo, Ricardo ; Grader, Jr., George W. ; Dijksma, R. / Identifying groundwater recharge pathways in the Moscow sub-basin. Abstract from Rocky Mountain Section - 68th Annual Meeting - 18–19 May 2016, Moscow, Idaho, United States.
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title = "Identifying groundwater recharge pathways in the Moscow sub-basin",
abstract = "Continual groundwater decline over the last 80 years in the Moscow-Pullman basin is motivating communities to explore a wide range of strategies ranging from reservoir development to direct injection to aquifers to ensure a sustainable regional water supply. Historic pumping records indicate the shallow Wanapum aquifer in the Moscow region does receive recharge however it is less certain that the deeper Grand Ronde aquifer is receiving any significant recharge. Moreover there is not a clear consensus in the region of the location of the major aquifer recharge flow paths. In this study we used both distributed hydrologic modeling based on detailed soil mapping and stable isotope tracers to explore and evaluate potential groundwater recharge pathways in the Moscow sub-basin. Modelling results indicate that subsurface water flow off the forested granitics in eastern margin of the sub-basin is likely a significant source of recharge. Biweekly water samples taken from 22 wells and 2 springs and high frequency streamflow and precipitation samples collected over a two year period throughout the Moscow sub-basin were analyzed for stable isotopes of hydrogen and oxygen. Frequency analysis of these stable isotope data suggest the some wells are receiving recharge. Furthermore many of these wells exist on the eastern margin of the sub-basin lending further support to the hypothesis that this region should be considered to be a critical ground recharge zone.",
author = "J.H.J. Candel and E.S. Brooks and Eric Verhoeff and Mariana Dobre and Ricardo Sanchez-Murillo and {Grader, Jr.}, {George W.} and R. Dijksma",
year = "2016",
language = "English",
note = "Rocky Mountain Section - 68th Annual Meeting - 18–19 May 2016 ; Conference date: 18-05-2016 Through 19-05-2016",

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Candel, JHJ, Brooks, ES, Verhoeff, E, Dobre, M, Sanchez-Murillo, R, Grader, Jr., GW & Dijksma, R 2016, 'Identifying groundwater recharge pathways in the Moscow sub-basin' Rocky Mountain Section - 68th Annual Meeting - 18–19 May 2016, Moscow, Idaho, United States, 18/05/16 - 19/05/16, .

Identifying groundwater recharge pathways in the Moscow sub-basin. / Candel, J.H.J.; Brooks, E.S.; Verhoeff, Eric; Dobre, Mariana; Sanchez-Murillo, Ricardo; Grader, Jr., George W.; Dijksma, R.

2016. Abstract from Rocky Mountain Section - 68th Annual Meeting - 18–19 May 2016, Moscow, Idaho, United States.

Research output: Contribution to conferenceAbstractAcademic

TY - CONF

T1 - Identifying groundwater recharge pathways in the Moscow sub-basin

AU - Candel, J.H.J.

AU - Brooks, E.S.

AU - Verhoeff, Eric

AU - Dobre, Mariana

AU - Sanchez-Murillo, Ricardo

AU - Grader, Jr., George W.

AU - Dijksma, R.

PY - 2016

Y1 - 2016

N2 - Continual groundwater decline over the last 80 years in the Moscow-Pullman basin is motivating communities to explore a wide range of strategies ranging from reservoir development to direct injection to aquifers to ensure a sustainable regional water supply. Historic pumping records indicate the shallow Wanapum aquifer in the Moscow region does receive recharge however it is less certain that the deeper Grand Ronde aquifer is receiving any significant recharge. Moreover there is not a clear consensus in the region of the location of the major aquifer recharge flow paths. In this study we used both distributed hydrologic modeling based on detailed soil mapping and stable isotope tracers to explore and evaluate potential groundwater recharge pathways in the Moscow sub-basin. Modelling results indicate that subsurface water flow off the forested granitics in eastern margin of the sub-basin is likely a significant source of recharge. Biweekly water samples taken from 22 wells and 2 springs and high frequency streamflow and precipitation samples collected over a two year period throughout the Moscow sub-basin were analyzed for stable isotopes of hydrogen and oxygen. Frequency analysis of these stable isotope data suggest the some wells are receiving recharge. Furthermore many of these wells exist on the eastern margin of the sub-basin lending further support to the hypothesis that this region should be considered to be a critical ground recharge zone.

AB - Continual groundwater decline over the last 80 years in the Moscow-Pullman basin is motivating communities to explore a wide range of strategies ranging from reservoir development to direct injection to aquifers to ensure a sustainable regional water supply. Historic pumping records indicate the shallow Wanapum aquifer in the Moscow region does receive recharge however it is less certain that the deeper Grand Ronde aquifer is receiving any significant recharge. Moreover there is not a clear consensus in the region of the location of the major aquifer recharge flow paths. In this study we used both distributed hydrologic modeling based on detailed soil mapping and stable isotope tracers to explore and evaluate potential groundwater recharge pathways in the Moscow sub-basin. Modelling results indicate that subsurface water flow off the forested granitics in eastern margin of the sub-basin is likely a significant source of recharge. Biweekly water samples taken from 22 wells and 2 springs and high frequency streamflow and precipitation samples collected over a two year period throughout the Moscow sub-basin were analyzed for stable isotopes of hydrogen and oxygen. Frequency analysis of these stable isotope data suggest the some wells are receiving recharge. Furthermore many of these wells exist on the eastern margin of the sub-basin lending further support to the hypothesis that this region should be considered to be a critical ground recharge zone.

M3 - Abstract

ER -

Candel JHJ, Brooks ES, Verhoeff E, Dobre M, Sanchez-Murillo R, Grader, Jr. GW et al. Identifying groundwater recharge pathways in the Moscow sub-basin. 2016. Abstract from Rocky Mountain Section - 68th Annual Meeting - 18–19 May 2016, Moscow, Idaho, United States.