| PONGOLA RIVER: Hydrology and geohydrology |
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eWISA Home | PONGOLA: MAIN INDEX | ALPHABETICAL LIST OF RIVERS | ||||||||||||||||||||||
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Map of the PONGOLA River |
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| HYDROLOGY | |||||||||||||||||||||||
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Return flows from the large areas of
irrigation upstream of the Pongolapoort
Dam contribute significantly to the available resource. The return
flows are estimated to be about 10% of the irrigation demand, or 21
million m3/annum. The groundwater use from within this catchment is
estimated to be only 8 million m3/annum. The groundwater potential in
this catchment is limited.
The runoff generated by the Pongola River is high by South African standards with an estimated MAR of 1 344 million m3/annum(5) of which an estimated 1 131 million m3/annum originates in South Africa. |
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| GEOHYDROLOGY | |||||||||||||||||||||||
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| References | |||||||||||||||||||||||
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Ref 1: Department of Water Affairs and Forestry, South Africa. 2004. DWAF Report No. PB WMA 06/000/00/0304: Internal Strategic Perspective: Usutu to Mhlathuze Water Management Area. (March 2004). Tlou & Matji (Pty) Ltd. | ||||||||||||||||||||||
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