Spatially distributed groundwater recharge from hydrological model


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Resource type: Composite Resource
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Created: Feb 20, 2021 at 10:44 a.m.
Last updated: Jun 12, 2021 at 9:14 a.m.
DOI: 10.4211/hs.a8735826b8fe434ca570711a9b9acb49
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Sharing Status: Published
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Abstract

We present the results of a semi-distributed hydrological modeling approach that incorporates water balance routines coupled with baseflow modeling techniques for assessing spatio-temporal variations of groundwater recharge on a regional scale. The study area is the Amathole Water Supply System situated in a semi-arid part of the Eastern Cape of South Africa. Dependent on the sub-catchment, the mean annual groundwater recharge is estimated to vary between ~0.5 to 8 % of annual rainfall. Annual groundwater recharge exhibits a high spatio-temporal heterogeneity.

Subject Keywords

Resource Level Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
-32.5143°
East Longitude
28.2038°
South Latitude
-33.0938°
West Longitude
26.9321°

Content

readme.txt

1. General information:

The dataset "Watersheds_Results" contains results of a hydrological modeling study in vector format. More details on the conducted modelling study are available in the related publication. The dataset contains average annual values of simulated water balance components for watersheds in the study area. 

The simulated water balance components are listed below with corresponding abbreviations and units:

- Groundwater recharge (GWR) in mm/a
- Actual Evapotranspiration (ETa) in mm/a
- Potential Evapotranspiration (ETp) in mm/a
- Precipitation (N) in mm/a
The simulation period is mid 2007 to 2017.

2. Data structure:

There is one column for each simulation year within the simulation period for each variable (water balance component). The column headers are constituted of the variable abbreviation and the simulation year, for example column "GWR_2012" contains simulation results on average groundwater recharge in 2012.
Additionally, there is one column for each variable that holds average values over the total simulation period. Those column headers are named "GWN", "N", "ETa" and "ETp".

Related Resources

This resource is described by https://doi.org/10.1002/hyp.14264

How to Cite

Nolte, A., M. Eley, M. Schöniger, D. Gwapedza, J. Tanner, S. K. Mantel, K. Scheihing (2021). Spatially distributed groundwater recharge from hydrological model, HydroShare, https://doi.org/10.4211/hs.a8735826b8fe434ca570711a9b9acb49

This resource is shared under the Creative Commons Attribution-NoCommercial CC BY-NC.

http://creativecommons.org/licenses/by-nc/4.0/
CC-BY-NC

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