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Dam Monitoring in South Africa

The purpose of the Komati River Basin Development Project is to assure water availability in order to promote economic development. OTT’s part of the project was to supply dataloggers for the monitoring of the river flows into and out of the Maguga and the Driekoppies dams.

The technical needs were high-level:

  • Technology designed specifically for environmental monitoring applications
  • Robust in construction for long-term deployment
  • Long-life internal power source
  • Small installation footprint
  • Easy to install and maintain
  • Remote data transmission capabilities; GSM or satellite
  • Software system that is compatible with customer’s IT infrastructure
  • Flexible data management and data handling

Project Description pdf Download

OTT ecoLog 500 per monitoraggio di acque sotterranee

OTT ecoLog 500

Sensore di livello indipendente con trasmissione remota dei dati

OTT ecoLOG 500 è uno strumento indipendente per la misurazione del livello dell'acqua che offre opzioni flessibili per l'accesso ai dati remoti e prestazioni impareggiabili per il suo prezzo.

  • Acqua di superficie Acque sotterranee
  • Cella di pressione ventilata
  • Livello dell'acqua/pressione, temperatura dell'acqua
  • Misura, memorizza e trasmette i dati relativi a livello e temperatura dell'acqua
  • 0 … 4, 10, 20, 40, e 100 m
  • ± 0,05% FS
OTT ecoLog 800 CTD per il monitoraggio di acque sotterranee

OTT ecoLog 800

Sistema autonomo di trasmissione remota dei dati di misurazione relativi a livello dell'acqua, temperatura e conduttività in applicazioni nell'ambito delle acque sotterranee e di superficie

OTT ecoLog 800 è un sistema autonomo per la misurazione di livello dell'acqua, temperatura e conduttività in applicazioni nell'ambito delle acque sotterranee e di superficie.

  • Acqua di superficie Acque sotterranee
  • Cella di pressione ventilata e cella di conduttività a 4 elettrodi in grafite
  • Livello dell'acqua/pressione, temperatura dell'acqua, conduttività
  • Misura, memorizza e trasmette i dati relativi a livello e temperatura dell'acqua
  • 0 … 4, 10, 20, 40, e 100 m
  • ± 0,05% FS

The Komati River Basin Water Authority (KOBWA) was established in 1993 with the purpose of implementing the first phase of the Komati River Basin Development Project. It comprised the design, construction, operation and maintenance of the Driekoppies Dam in South Africa and the Maguga Dam in Swaziland. The purpose of the project is to assure water availability in order to promote economic development, so the tasks are:

  • Evaluating the hydrology of the Komati Basin to determine water availability
  • Developing and implementing decision support systems to optimize water allocation/supply
  • Facilitating communication between KOBWA and stakeholders on system operation

 

The remote monitoring system was designed with the following hardware components and functions:

  • 9 ecolog800 units and 2 ecoLog500 units were deployed at flow measuring points within the KOBWA water management area. All equipment was installed at existing weir sites in South Africa and Swaziland with the rivers crossing borders of both countries
  • Parameters are recorded at 15 min intervals and reported 4-hourly via GSM/GPRS using FTP transfer to a secure server hosted by OTT.
  • The ecoLog units had to be specially modified to allow for installation in pipes. The vented cables had to be cut, pulled into the cable pipes and then specially prepared and joined in housings specified by OTT Hydromet in Kempten.

The remote monitoring system was designed with the following software components and functions:

  • OTT Hydras3 + RX software was installed on a local PC at the KOBWA offices at Driekoppies Dam, Schoemansdal, Mpumalanga Province, South Africa.

  • Data is retrieved via an internet connection using FTP format and the database is populated automatically.

  • Hydras3 software provides graphical interface and data export functions into other formats (text, Excel).
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