Checking for non-preferred file/folder path names (may take a long time depending on the number of files/folders) ...

GroMoPo Metadata for Atlantis aquifer MODFLOW model


Authors:
Owners: This resource does not have an owner who is an active HydroShare user. Contact CUAHSI (help@cuahsi.org) for information on this resource.
Type: Resource
Storage: The size of this resource is 1.9 KB
Created: Feb 07, 2023 at 6:06 p.m.
Last updated: Feb 07, 2023 at 6:07 p.m.
Citation: See how to cite this resource
Sharing Status: Public
Views: 312
Downloads: 199
+1 Votes: Be the first one to 
 this.
Comments: No comments (yet)

Abstract

The Atlantis Water Supply Scheme (AWSS, Western Cape, South Africa) has been in operation for about 40 years as a means to supply and augment drinking water to the town of Atlantis via managed aquifer recharge (MAR). In this study, the numerical model MODFLOW for groundwater flow and contaminant transport was used in support of the management of the AWSS. The aims were: (i) to calibrate the MODFLOW model for the MAR site at Atlantis; (ii) to run realistic scenarios that cannot be replicated through experiments; and (iii) to make recommendations in support of efficient and sustainable management of the aquifer. MODFLOW was calibrated through comparison of observed and simulated groundwater levels (R-2 between 0.663 and 0.995). Scenario simulations indicated possible drawdowns between < 5 m (low groundwater abstraction and low artificial recharge of groundwater through infiltration basins) and > 20 m (high abstraction and high artificial recharge) at localized areas of the Witzand wellfield. At Silwerstroom, large drawdown levels were not predicted to occur, so this wellfield could be exploited more without affecting the sustainability of the groundwater resource. Groundwater moves from the infiltration basins towards the Witzand wellfield at a rate of 120-150 m.a(-1). The modelling results supported recommendations for balancing groundwater abstraction and artificial recharge volumes, monitoring the water balance components of the system, the potential risks of groundwater contamination and the delineation of groundwater protection zones.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
South Africa
North Latitude
-33.5073°
East Longitude
18.5398°
South Latitude
-33.6673°
West Longitude
18.3374°

Content

Additional Metadata

Name Value
DOI 10.4314/wsa.v43i1.15
Depth 50
Scale < 100 km²
Layers 1 layer
Purpose groundwater resources
GroMoPo_ID 61
IsVerified True
Model Code MODFLOW
Model Link https://doi.org/10.4314/wsa.v43i1.15
Model Time 1993-2011
Model Year 2017
Model Authors Nebo Jovanovic, Richard DH Bugan, Gideon Tredoux, Sumaya Israel, Rodney Bishop, Vernon Marinus
Model Country South Africa
Data Available report/paper only
Developer Email njovanovic@csir.co.za
Dominant Geology siliciclastic sedimentary (sandstones, shales)
Developer Country South Africa
Publication Title Hydrogeological modelling of the Atlantis aquifer for management support to the Atlantis Water Supply Scheme
Original Developer No
Additional Information
Integration or Coupling None of the above
Evaluation or Calibration dynamic water levels
Geologic Data Availability

How to Cite

GroMoPo, A. Quichimbo (2023). GroMoPo Metadata for Atlantis aquifer MODFLOW model, HydroShare, http://www.hydroshare.org/resource/2d9065419d6644978e25ae9233f354d6

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

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

Comments

There are currently no comments

New Comment

required