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Modelling of Wetland Processes Impacting Water Resources at a Catchment Scale
Expanded Title:Hydrological models are an approximation of nature, thus accurate results depends on long term hydrological data with minimal missing data. Initial modelling in the Mokolo catchment was done with minimal data and knowledge of the hydrological processes of the wetlands. The findings can be improved by further studies which will investigate and conceptualise the key dominant hydrological processes of the wetlands, prior to modelling, in order to improve the accuracy of the results. The direction taken by this study to assess the incorporation of wetland process is a step in the right direction, especially in areas of the country where wetlands are an important hydrological process, not only in understanding but also managing the water resources of the catchment. Thus, a key finding of this study was that there is an insufficient representation of the underlying hydrological processes of wetlands in current water resources assessments. For a number of sub-catchments, the right results are therefore generated for the wrong reasons. Linking this project to other studies, stable Isotopes provided an accurate tracer for groundwater in freshwater ecosystems. Stable isotopes proved the most useful in the Waterberg case study in order to identify groundwater discharge in the form of base-flow in the streams. However, stable isotopes did not perform as successfully in the Wilderness case study as a result of the high evaporative signature of the lakes, although it was successful in identifying the groundwater within the aquifer. Some of these studies are still underway, and will close some of the gaps identified in this completed project
Date Published:01/10/2016
Document Type:Research Report
Document Subjects:Water Resource Management/IWRM - Catchment Management
Document Keywords:Environment
Document Format:Report
Document File Type:pdf
Research Report Type:Standard
WRC Report No:2191/1/16
ISBN No:978-1-4312-0822-7
Authors:Maherry A; Marneweck G; Kapangaziwiri E; Mandlazi NP; Hackman J; Mwenge-Kahinda J-M
Project No:K%/2191
Originator:WRC
Organizations:CSIR; Wetland Consulting Services (Pty) Ltd
Document Size:18 616 KB
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