Navigate Up
Sign In

Heuningnes Catchment Research

15th Biennial Groundwater Conference The Groundwater Division of the Geological Society of South Africa hosted the 5th biennial Groundwater Conference at Spier in Stellenbosch from 16-18 October 2017 .15th Biennial Groundwater Conference The Groundwater Division of the Geological Society of South Africa hosted the 5th biennial Groundwater Conference at Spier in Stellenbosch from 16-18 October 2017 .15th Biennial Groundwater Conference The Groundwater Division of the Geological Society of South Africa hosted the 5th biennial Groundwater Conference at Spier in Stellenbosch from 16-18 October 2017 .
Overview
Objectives
Lead Researchers
Student Researchers
Gallery
    • ​Project Overview

      The Heuningnes Catchment  with an area of 1401 km2 and located in the Cape Agulhas in the Western Cape Province of South Africa, had until this project started no monitoring of various aspects of water resources. Three gauging stations were operational on the Kars River during the 1953- 1960 period, and estimates of the available water resources have been based on the regionalization of the Pitman monthly rainfall-runoff model without any validation. This catchment has the Bredasdorp Mountains along the northern watershed, and the rest of the catchment is a low lying coastal plain. There are several temporary ponds and lakes with the largest being the km Soetendalsvlei Lake (3 km wide and 8 km long) and is the largest freshwater lake in South Africa. This lake is connected to the Indian Ocean by the Heuningnes River. The major land uses are rainfed production of wheat and barley, and livestock production. There are a few vineyards and pine plantations.

      The Breede-Gourtiz Catchment Management Agency (www.bgcma.co.za) responsible for managing water resources has inadequate information about the available and uses of water resources of this catchment. The rapid spreading of invasive alien plants is considered a major threat to water resources and biodiversity. Land owners have formed the Nuwejaars Wetland Special Management Area (http://www.nuwejaars.com/), for the purposes of enhancing sustainable management of the ecosystem of the Nuwejaars River, which is one of the major rivers in this catchment. One of the activities is the clearing of invasive alien plants particularly on riparian zones and hillslopes. There is inadequate information about the amount of water conserved by clearing invasive alien plants. There are concerns about effects of various land uses such as crop production on water quality.​ 

    • ​Project Objectives

    • ​To determine how hydrological responses vary with topography and land uses.

    • To establish how different rural land uses affect water quality along the main tributaries.

    • ​To establish effects of riparian and non-riparian wetlands on flows of the Nuwejaars River

    • To determine how river inflows, and surface water - groundwater interactions affect the water balance of Soetendalsvlei Lake.

    • ​To evaluate how rates of water use by invasive alien plants differ between riparian sites and on hillslopes, and the implications on river flows.

    • Research Students

    • First Name & Surname » Project » Degree

    • Booysen , Tamsyn Stephny » Effects of land uses on water quality in the Heuningnes Catchment » MSc

    • Steenkamp , Nur » Modelling hydrological responses of the Nuwejaars River catchment » MSc

    • Mandlazi , Nompumelelo » Representation of riparian and non-riparian wetlands in selected hydrological models » MSc

    • Maswanganye , Eugene » A comparison of remotely sensed and ground-based estimation of precipitation » MSc

    • Ndara , Nolusindiso » Analysis of monthly MOD16 evapotranspiration rates in two climatic regions of South Africa; Heuningnes and Letaba catchments (2000-2012) » MSc

    • Barbeu , Lucien » Risk assessment of groundwater quality in Heuningnes Catchment » MSc

    • Roger , Jeptha » Spatial and temporal variation of some selected water quality parametersalong the Kars River » MSc

    • Magen , Munnik » Water quality regulation by the Kars River wetland » MSc

    • Mehl , Daniel » Effects of riparian and non-riparian wetlands on flows of the Nuwejaars River » MSc

    • Yonela , Mkunyana » An assessment of water use rates by invasive alien plants on riparian sites and hillslopes » MSc

    • Damian , Hans » Effects of Kars River wetlands on river flows » MSc

    • Carolissen , Mandy » Uses and values of wetlands in the Heuningnes Catchment » PhD

    • UWC Catchment Monitoring System developed for the Heuningnes Catchment

      The project has since 2014 established the following catchment monitoring system

      LogoDonor.PNG
    • 4

    • automatic weather stations

    • 2 sites for monitoring transpiration rates of invasive alien plants using the heat pulse velocity e method

    • 15 river water level monitoring sites with data logging at 15 minutes interval

    • ​2 lake level monitoring stations with data loggers

    • ​23 groundwater level monitoring sites

​​​​​​​​​
​​
 

COLLABORATING PARTNERS

 
     

LogoDonor.PNG



Breede-Gouritz Catchment Management Agency
Council for Scientific and Industrial Research of South Africa
South African Environmental Observation Network of the National Research Foundation
Faculty of Geo-information Science and Earth Observation (ITC), University of Twente, The Netherlands


​​​​​​​​​​​​
 
 
    ​
​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​
UWC Supports Sustainability
© 2013 UWC | Disclaimer | Sign-in

Contact Centre

University of the Western Cape,
Robert Sobukwe Road,
Bellville, 7535,
Republic of South Africa

info@uwc.ac.za | +27 21 959 2911

Location