Modeling approaches and strategies for data-scarce aquifers: example of the Dar es Salaam aquifer in Tanzania

Simple item page
dc.contributor.authorCamp, Marc Van
dc.contributor.authorMjemah, Ibrahimu Chikira
dc.contributor.authorFarrah, Nawal Al
dc.contributor.authorWalraevens, Kristine
dc.date.accessioned2022-12-17T09:41:39Z
dc.date.available2022-12-17T09:41:39Z
dc.date.issued2013
dc.descriptionJournal articleen_US
dc.description.abstractManagement of groundwater resources can be improved by using groundwater models to perform risk analyses and to improve development strategies, but a lack of extensive basic data often limits the implementation of sophisticated models. Dar es Salaam in Tanzania is an example of a city where increasing groundwater use in a Pleistocene aquifer is causing groundwater-related problems such as saline intrusion along the coastline, lowering of water-table levels, and contamination of pumping wells. The lack of a water-level monitoring network introduces a problem for basic data collection and model calibration and validation. As a replacement, local watersupply wells were used for measuring groundwater depth, and well-top heights were estimated from a regional digital elevation model to recalculate water depths to hydraulic heads. These were used to draw a regional piezometric map. Hydraulic parameters were estimated from short-time pumping tests in the local wells, but variation in hydraulic conductivity was attributed to uncertainty in well characteristics (information often unavailable) and not to aquifer heterogeneity. A MODFLOW model was calibrated with a homogeneous hydraulic conductivity field and a sensitivity analysis between the conductivity and aquifer recharge showed that average annual recharge will likely be in the range 80–100mm/year.en_US
dc.identifier.issn1431-2174
dc.identifier.urihttp://www.suaire.sua.ac.tz/handle/123456789/4863
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.subjectAfricaen_US
dc.subjectCoastal aquifersen_US
dc.subjectGroundwater flowen_US
dc.subjectOver-abstractionen_US
dc.subjectNumerical modelingen_US
dc.titleModeling approaches and strategies for data-scarce aquifers: example of the Dar es Salaam aquifer in Tanzaniaen_US
dc.typeArticleen_US
dc.urlhttps://doi.org/10.1007/s10040-012-0908-5en_US

Files

Original bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Van Camp et al.2013 Hydrogeo. J .pdf
Size:
2.64 MB
Format:
Adobe Portable Document Format
Description:
Download

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.67 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Articles, Conference and Workshop Papers Collection