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5-year time series graphs for selected sites and variables in the Vaal Dam catchment.

KD - Klip River at De Langesdrift

COD | Conductivity | Nitrate NO₃ as N | pH | Phosphate PO₄ as P

KSV - Spruitsonderdrift downstream of Vrede

COD | Conductivity | Nitrate NO₃ as N | pH | Phosphate PO₄ as P

VDS - Vaal River downstream of Standerton

COD | Conductivity | Nitrate NO₃ as N | pH | Phosphate PO₄ as P

VE - Vaal River above Ermelo

COD | Conductivity | Nitrate NO₃ as N | pH | Phosphate PO₄ as P

VV - Vaal River at Villiers

COD | Conductivity | E.coli | Nitrate NO₃ as N | pH | Phosphate PO₄ as P

WAE - Waterval River at Elandslaagte

COD | Conductivity | Nitrate NO₃ as N | pH | Phosphate PO₄ as P

WF - Wilge River at Frankfurt

COD | Conductivity | E.coli | Nitrate NO₃ as N | pH | Phosphate PO₄ as P

WH - Wilge River at Harrismith

COD | Conductivity | Nitrate NO₃ as N | pH | Phosphate PO₄ as P

WLA - Ash River outfall above Bethlehem

COD | Conductivity | E.coli | Nitrate NO₃ as N | pH | Phosphate PO₄ as P

WMW - Meul River at Waaiwater

COD | Conductivity | Nitrate NO₃ as N | pH | Phosphate PO₄ as P