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Water Reconciliation Strategy Study for the Large Bulk Water Supply Systems: Greater Bloemfontein Area 38
B2. Agricultural Irrigation Audit Upstream of Maselspoort
Weir with Improvement for Catchment C52A
1. INTRODUCTION
The extent of the irrigation upstream of the Maselspoort Weir to the Rustfontein Dam is unknown and
therefore the impact on water availability is unknown. This area is not part of any Water User
Association and is therefore managed by the Department of Water Affairs. The area is included in the
quaternary catchment of C52A-F. Table 1.1 gives a summary of the extent of the irrigation in the
Catchment according to the WARMS data.
Quaternary catchment C52A is upstream of the Rustfontein Dam and includes the Upper- and Lower
Kromspruit, the Modder River and Gannaspruit. De Wetsdorp is near the start of the Modder River.
Rustfontein Dam is included in the catchment.
Quaternary catchment C52B is north of Rustfontein Dam and includes the towns Botshabelo,
Thaba Nchu, Tweefontein, Groothoek, Springfontein and Gladstone. The Klein Modder River,
Wildebeesspruit, Sepane and Kgabanyane drain this area to the Modder River between Rustfontein
Dam and confluence with the Sepane.
Quaternary catchment C52C Is north of C52B and the Korannaspruit and Steynspruit drain this
catchment to the Modder River. The small towns in this catchment are Modutung, Spitskop, Merino and
Rooifontein.
Quaternary catchment C52D is drained by the Matjiespruit and Koringspruit with the Modder River
from the Sepane confluence into the Mockes Dam.
Quaternary catchment C52E is drained by the Klein Osspruit and the Osspruit. The Modder River
from the Mockes Dam flows into the Maselspoort weir, where water is supplied to the Maselspoort
waterworks. The quaternary catchment stops downstream of the Maselspoort weir at the Glen
Agricultural College.
Quaternary catchment C52F is drained by the Bloemspruit, Rietspruit en Renostersspruit. The
Bloemspruit drains most of the city Bloemfontein, including water from the Sewage Disposal works.
Table 1.1: Irrigation in the Quaternary Catchment Areas According to WARMS Data
Quaternary
Catchment Area
Irrigation
ha
Registered Volume
m 3
Water Use
m 3 /ha
C52A 612 5 427 992 8 868
C52B 421 2 163 920 5 140
C52C 237 1 095 338 4 616
C52D 298
Irrigation only
17 075 127
2 118 760
57 363
7 118
C52E 779 3 640 846 4 671
C52F 1 957 13 713 277 7 008
Total 4 304 43 116 500
Interventions Report June 2012