| HARTENBOS RIVER: Hydrology and geohydrology |
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eWISA Home | HARTENBOS: MAIN INDEX | ALPHABETICAL LIST OF RIVERS | ||||||||||||||||||||||
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Map of the HARTENBOS River |
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| HYDROLOGY | |||||||||||||||||||||||
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Midgley and Pitman (1969) give the mean annual precipitation for the Hartenbos catchment as 462 mm to 509 mm. According to Heydorn and Tinley (1980) the catchment of the Hartenbos falls between the 400mm and 500mm mean annual isohyets. (Ref 1) | ||||||||||||||||||||||
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The mean annual run-off is given as 2 072
morgen feet (5,4 x 106m3) (Midgely and Pitman,
1969) and 5 x 106m3 (Noble and Hemens,
1978). From flow records in the publications Monthly Flow Records
(1968) and River Flow Data (1978), the mean annual run-off for the
seventeen-year period from October 1953 to September 1970, was
calculated to be 5,3 x 106m3 . The flow
measurements were made at a gauging station situated approximately 5 km
upstream of the mouth. (Ref 1)
Flow records from the above mentioned gauging station indicate that before contruction of the Hartebeeskuil Dam, the river flowed intermittently. Flow measurements for the gauging station were continued after construction of the Hartebeeskuil Dam until September 1973 when the station was closed down due to the effects of the dam. During this period, run-off occurred only from July to November 1971 and from April to July 1973. (Ref 1) |
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| GEOHYDROLOGY | |||||||||||||||||||||||
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| References | |||||||||||||||||||||||
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Ref 1: ESTUARIES OF THE CAPE: REPORT NO.11 HARTENBOS(CMS1), CSIR RESEARCH REPORT 410- AEF Heydorn, JR Grindley | ||||||||||||||||||||||
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