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`superwell.R` is an _**old version**_ of the model and will is **_not maintained_** anymore. This version has been included in the model repository to be able to reproduce following studies.
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- Niazi, H., Wild, T., Turner, S., Graham, N., Hejazi, M., Msangi, S., Kim, S., Lamontagne, J., & Zhao, M. (2024; In-press). [Global Peak Water Limit of Future Groundwater Withdrawals](https://www.nature.com/natsustain/). _Nature Sustainability_.
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- Niazi, H., Wild, T. B., Turner, S. W. D., Graham, N. T., Hejazi, M., Msangi, S., Kim, S., Lamontagne, J. R., & Zhao, M. (2024). Global peak water limit of future groundwater withdrawals. _Nature Sustainability, 7_(4), 413–422. <https://doi.org/10.1038/s41893-024-01306-w>
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- Turner, S. W. D., Hejazi, M., Yonkofski, C., Kim, S. H., & Kyle, P. (2019). [Influence of Groundwater Extraction Costs and Resource Depletion Limits on Simulated Global Nonrenewable Water Withdrawals Over the Twenty-First Century](https://doi.org/10.1029/2018EF001105). _Earth's Future_, 7(2), 123-135.
# _superwell_: A physics-based hydro-economic model for groundwater cost and supply assessment
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# _superwell_: A physics-based hydro-economic model for estimating groundwater cost and supply globally
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The [`superwell`](https://github.com/JGCRI/superwell.git) model provides estimates of the global extractable volumes and unit-costs $(USD/km^3)$ of accessible groundwater production under user-specified extraction scenarios.
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The structure of [`superwell`](https://github.com/JGCRI/superwell.git) is:
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- spatially and temporally flexible (covers grid to global and hourly to centennial scales)
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> _Key model documentation & primary citation:_\
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Niazi, H., Ferencz, S., Graham, N., Yoon, J., Wild, T., Hejazi, M., Watson, D., & Vernon, C. (2024; In-prep). [Long-term Hydro-economic Assessment Tool for Evaluating Global Groundwater Cost and Supply: Superwell v1](https://gmd.copernicus.org/preprints/). _Geoscientific Model Development_.
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Niazi, H., Ferencz, S., Graham, N., Yoon, J., Wild, T., Hejazi, M., Watson, D., & Vernon, C. (2025). [Long-term Hydro-economic Analysis Tool for Evaluating Global Groundwater Cost and Supply: Superwell v1.0](https://doi.org/10.5194/egusphere-2024-799). _Geoscientific Model Development_.
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## Getting Started
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All inputs are in [`inputs/`](./inputs/) folder. The [`superwell`](https://github.com/JGCRI/superwell.git) code requires two primary input files:
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-[params.csv](./inputs/params.csv) defining model settings and scenario assumptions
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-[inputs.csv](./inputs/inputs.csv) containing grided aquifer thickness, porosity, depth to water, permeability, grid area, WHY class, and grid area
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-[inputs_recharge_lakes.csv](./inputs/inputs_recharge_lakes.csv) containing grided aquifer thickness, porosity, depth to water, permeability, grid area, recharge, WHY class, and grid area
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and two supporting data files:
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-[GCAM_Electricity_Rates.csv](./inputs/GCAM_Electricity_Rates.csv) providing assumptions on the cost of electricity in 172 countries
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-[Theis_well_function_table.csv](./inputs/Theis_well_function_table.csv) as a look-up table for relation between $u$ and well function $W(u)$
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[`inputs/`](./inputs/) folder also contains digitized, geo-processed [shape files](./inputs/shapefiles/) of aquifer properties that makes the contents of the [inputs.csv](./inputs/inputs.csv) file after processing.
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[`inputs/`](./inputs/) folder also contains digitized, geo-processed [shape files](./inputs/shapefiles/) of aquifer properties that makes the contents of the [inputs_recharge_lakes.csv](./inputs/inputs_recharge_lakes.csv) file after processing.
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> _Cite input data as:_\
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Niazi, H., Watson, D., Hejazi, M., Yonkofski, C., Ferencz, S., Vernon, C., Graham, N., Wild, T., & Yoon, J. (2024). [Global Geo-processed Data of Aquifer Properties by 0.5° Grid, Country and Water Basins](https://doi.org/10.57931/2307831). MSD-LIVE Data Repository. <https://doi.org/10.57931/2307831> \
Niazi, H., Watson, D., Hejazi, M., Yonkofski, C., Ferencz, S., Vernon, C., Graham, N., Wild, T., & Yoon, J. (2024). [Global Geo-processed Data of Aquifer Properties by 0.5° Grid, Country and Water Basins](https://doi.org/10.57931/2484226). MultiSector Dynamics-Living, Intuitive, Value-adding, Environment. <https://doi.org/10.57931/2484226> \
See [documentation on inputs](./inputs/README.md) for more details.
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A select-few key outputs include: extractable volumes, drawdown, number of wells, costs including capital, maintenance, pumping, and unit costs of groundwater production.
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> _Cite output data as:_\
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Niazi, H., Ferencz, S., Yoon, J., Graham, N., Wild, T., Hejazi, M., Watson, D., & Vernon, C. (2024). [Globally Gridded Groundwater Extraction Volumes and Costs under Six Depletion and Ponded Depth Targets](https://doi.org/10.57931/2307832). MSD-LIVE Data Repository. <https://doi.org/10.57931/2307832> \
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Niazi, H., Ferencz, S., Yoon, J., Graham, N., Wild, T., Hejazi, M., Watson, D., & Vernon, C. (2024). [Globally Gridded Groundwater Extraction Volumes and Costs under Six Depletion and Ponded Depth Targets](https://doi.org/10.57931/2307832). MultiSector Dynamics-Living, Intuitive, Value-adding, Environment. <https://doi.org/10.57931/2307832> \
See [documentation on outputs](./outputs/README.md) for more details.
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### Papers
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- Niazi, H., Wild, T., Turner, S., Graham, N., Hejazi, M., Msangi, S., Kim, S., Lamontagne, J., & Zhao, M. (2024; In-press). [Global Peak Water Limit of Future Groundwater Withdrawals](https://www.nature.com/natsustain/). _Nature Sustainability_.
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- Niazi, H., Wild, T. B., Turner, S. W. D., Graham, N. T., Hejazi, M., Msangi, S., Kim, S., Lamontagne, J. R., & Zhao, M. (2024). Global peak water limit of future groundwater withdrawals. _Nature Sustainability, 7_(4), 413–422. <https://doi.org/10.1038/s41893-024-01306-w>
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- Turner, S., Hejazi, M., Yonkofski, C., Kim, S., & Kyle, P. (2019). [Influence of Groundwater Extraction Costs and Resource Depletion Limits on Simulated Global Nonrenewable Water Withdrawals Over the Twenty-First Century](https://doi.org/10.1029/2018EF001105). _Earth's Future_, 7(2), 123-135.
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### Model documentation
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- Niazi, H., Ferencz, S., Graham, N., Yoon, J., Wild, T., Hejazi, M., Watson, D., & Vernon, C. (2024; In-prep). [Long-term Hydro-economic Assessment Tool for Evaluating Global Groundwater Cost and Supply: Superwell v1](https://gmd.copernicus.org/preprints/). _Geoscientific Model Development_.
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- Niazi, H., Ferencz, S., Graham, N., Yoon, J., Wild, T., Hejazi, M., Watson, D., & Vernon, C. (2025). [Long-term Hydro-economic Analysis Tool for Evaluating Global Groundwater Cost and Supply: Superwell v1.0](https://doi.org/10.5194/egusphere-2024-799). _Geoscientific Model Development_.
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- Niazi/Ferencz et al software documentation JoSS in-prep
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