TY - GEN
T1 - GROUNDWATER-SURFACE WATER INTERACTIONS IN INTENSIVELY MANAGED WATER SYSTEMS
T2 - 28th European Meeting of Environmental and Engineering Geophysics, Held at the Near Surface Geoscience Conference and Exhibition 2022, NSG 2022
AU - Ragab, D.
AU - Flores, A.
AU - Kaiser, K.
AU - Niu, Q.
AU - Attwa, M.
N1 - Publisher Copyright:
© 2022 NSG. All Rights Reserved.
PY - 2022
Y1 - 2022
N2 - A better understanding of the complexity of groundwater-surface water interactions is highly required for managing the existing water resources efficiently in the agricultural landscapes. As a case study, the seepage rate is estimated using the reach gain/loss method via selected canal reaches of different sizes and lithology in the Treasure Valley (TV), USA. Then, the total gain/loss across the TV is estimated using 3 scaling methods. The resulting net water losses of the TV’s canals are 3.23 x 10, 1.18 x 10, and 1.11 x 10acre ft/yr. To better constrain the canal seepage variability and uncertainty, electrical resistivity tomography (ERT) technique is deployed applying the advanced time-lapse ERT inversion method. The subsurface resistivity variations are monitored over two months, which are attributed to the saturation and water content rates as a result of the lateral water flow movement from the adjacent water-filled surface canal. The inversion results of 2D-ERT profile are useful for getting a quantitative seepage estimate based on the dimensions of the saturated zone over time. This research provides a better understanding of groundwater-surface water interactions in such heavily managed systems for evaluating alternative management options of the existing water resources.
AB - A better understanding of the complexity of groundwater-surface water interactions is highly required for managing the existing water resources efficiently in the agricultural landscapes. As a case study, the seepage rate is estimated using the reach gain/loss method via selected canal reaches of different sizes and lithology in the Treasure Valley (TV), USA. Then, the total gain/loss across the TV is estimated using 3 scaling methods. The resulting net water losses of the TV’s canals are 3.23 x 10, 1.18 x 10, and 1.11 x 10acre ft/yr. To better constrain the canal seepage variability and uncertainty, electrical resistivity tomography (ERT) technique is deployed applying the advanced time-lapse ERT inversion method. The subsurface resistivity variations are monitored over two months, which are attributed to the saturation and water content rates as a result of the lateral water flow movement from the adjacent water-filled surface canal. The inversion results of 2D-ERT profile are useful for getting a quantitative seepage estimate based on the dimensions of the saturated zone over time. This research provides a better understanding of groundwater-surface water interactions in such heavily managed systems for evaluating alternative management options of the existing water resources.
UR - http://www.scopus.com/inward/record.url?scp=85161132969&partnerID=8YFLogxK
U2 - 10.3997/2214-4609.202220132
DO - 10.3997/2214-4609.202220132
M3 - Conference contribution
AN - SCOPUS:85161132969
T3 - 28th European Meeting of Environmental and Engineering Geophysics, Held at the Near Surface Geoscience Conference and Exhibition 2022, NSG 2022
BT - 28th European Meeting of Environmental and Engineering Geophysics, Held at the Near Surface Geoscience Conference and Exhibition 2022, NSG 2022
Y2 - 18 September 2022 through 22 September 2022
ER -