Helen Dahlke

University of California, Davis | Associate Professor

Subject Areas: Hydrology, Catchment hydrology, groundwater-surface water interaction, isotope hydrology

 Recent Activity

ABSTRACT:

This data repository contains supporting information and datasets from the publication titled "Identifying agricultural managed aquifer recharge locations to benefit drinking water supply in rural communities" published by Nisha Marwaha, George Kourakos, Elad Levintal, and Helen E. Dahlke in the journal Water Resources Research (https://doi.org/10.1029/2020WR028811).

The datasets are input and output files of a GIS-based multi-criteria decision analysis that combines biophysical data (soils, land use, and surface water conveyance) with groundwater modeling and particle tracking to identify suitable agricultural land parcels for multi-benefit groundwater recharge within well capture zones of 288 rural communities. Parcels are prioritized using a vulnerability index to change in groundwater supply, derived from well reliance and failures, pesticide applications, land subsidence, and socio-economic data. Our analysis identifies 2,998 suitable land parcels for Ag-MAR within the well capture zones of 149 of the 288 communities, of which 144 rely mainly on groundwater for drinking water. The majority of identified Ag-MAR parcels serve communities ranked as having extreme or very high vulnerability to changes in groundwater supply. Our research produces new understanding of factors contributing to community vulnerability and resilience to changes in drinking water supply and can be used to discuss actions to help achieve a stable and high-quality water supply.

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ABSTRACT:

This repository contains the output data and related GIS files to the Agricultural managed aquifer recharge study conducted in the area of Orland Artois Water District

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ABSTRACT:

This repository contains information about the C2VSim model and the required changes to run Managed aquifer recharge scenarios

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ABSTRACT:

This repository contains support material, model and data on a Managed Aquifer Recharge study in the Orland Artois Water District.
Using the California Central Valley Groundwater-Surface Water Simulation model (C2VSim) we tested a number of managed aquifer recharge scenarios.
More information about the study can be found in the following paper:
Kourakos, G., Dahlke, H. E., & Harter, T. ( 2019). Increasing Groundwater Availability and Seasonal Baseflow through Agricultural Managed Aquifer Recharge in an Irrigated Basin. Water Resources Research, 55. https://doi.org/10.1029/2018WR024019

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Resources
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Collection 0
Composite Resource 0
Generic 0
Geographic Feature 0
Geographic Raster 0
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MODFLOW Model Instance Resource 0
Multidimensional (NetCDF) 0
Script Resource 0
SWAT Model Instance 0
Time Series 0
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Collection Resource Collection Resource
2019 OAWD AgMAR Study - Folder
Created: Aug. 8, 2019, 11:14 a.m.
Authors: Kourakos, Georgios · Dahlke, Helen · Harter, Thomas

ABSTRACT:

This repository contains support material, model and data on a Managed Aquifer Recharge study in the Orland Artois Water District.
Using the California Central Valley Groundwater-Surface Water Simulation model (C2VSim) we tested a number of managed aquifer recharge scenarios.
More information about the study can be found in the following paper:
Kourakos, G., Dahlke, H. E., & Harter, T. ( 2019). Increasing Groundwater Availability and Seasonal Baseflow through Agricultural Managed Aquifer Recharge in an Irrigated Basin. Water Resources Research, 55. https://doi.org/10.1029/2018WR024019

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Model Instance Resource Model Instance Resource

ABSTRACT:

This repository contains information about the C2VSim model and the required changes to run Managed aquifer recharge scenarios

Show More
Composite Resource Composite Resource
2019 OAWD AgMAR Study - Data Files
Created: Aug. 12, 2019, 7:06 p.m.
Authors: Kourakos, Georgios · Dahlke, Helen · Harter, Thomas

ABSTRACT:

This repository contains the output data and related GIS files to the Agricultural managed aquifer recharge study conducted in the area of Orland Artois Water District

Show More
Composite Resource Composite Resource

ABSTRACT:

This data repository contains supporting information and datasets from the publication titled "Identifying agricultural managed aquifer recharge locations to benefit drinking water supply in rural communities" published by Nisha Marwaha, George Kourakos, Elad Levintal, and Helen E. Dahlke in the journal Water Resources Research (https://doi.org/10.1029/2020WR028811).

The datasets are input and output files of a GIS-based multi-criteria decision analysis that combines biophysical data (soils, land use, and surface water conveyance) with groundwater modeling and particle tracking to identify suitable agricultural land parcels for multi-benefit groundwater recharge within well capture zones of 288 rural communities. Parcels are prioritized using a vulnerability index to change in groundwater supply, derived from well reliance and failures, pesticide applications, land subsidence, and socio-economic data. Our analysis identifies 2,998 suitable land parcels for Ag-MAR within the well capture zones of 149 of the 288 communities, of which 144 rely mainly on groundwater for drinking water. The majority of identified Ag-MAR parcels serve communities ranked as having extreme or very high vulnerability to changes in groundwater supply. Our research produces new understanding of factors contributing to community vulnerability and resilience to changes in drinking water supply and can be used to discuss actions to help achieve a stable and high-quality water supply.

Show More