Upper Orange WMA, or Upper Orange Water Management Area (coded: 13), Includes the following major rivers: the Modder River, Riet River, Caledon River and Orange River, and covers the following Dams:
Armenia Dam Leeu River
Egmont Dam Witspruit
Gariep Dam Orange River
Groothoek Dam Kgabanyane River
Kalkfontein Dam Riet River
Katse Dam Malibamatso River
Knellpoort Dam Rietspruit
Krugersdrift Dam Modder River
Mohale Dam Senqunyane River
Rustfontein Dam Modder River
Tierpoort Dam Tierpoort River
Vanderkloof Dam Orange River
Welbedacht Dam Caledon River
Boundaries
Tertiary drainage regions C51, C52, D11 to D18, D21 to D24, D31, D32, D34 and D35.