Middle Vaal Water Management Area

Middle Vaal WMA. or Middle Vaal Water Management Area (coded: 9), Includes the following major rivers: the Vet River, Vals River and Vaal River, and covers the following Dams:
Boundaries.
Tertiary drainage regions C24, C25, C41 to C43, C60 and C70.
References.
http://www.dwaf.gov.za/Hydrology/