Orange Basin
Station: Aliwal Noord


GRDC Station Information
STN Derived Subbasin Information
Station Name (GRDC ID): Aliwal Noord (1159650) Basin Name: Orange
River Name: Oranje Next Downstream Station:Upington (1159300)
GRDC Country Code: ZA Distance to Next Downstream Station: 708 km
Start Year [Month]: 1964 [10] Upstream Station(s): None
End Year [Month]: 1986 [9]
Mean Discharge: 145 m3/s
Minimum Discharge: 1 m3/s
Maximum Discharge: 1286 m3/s Length of Upstream Mainstem: 395 km
Mean Interstation Discharge: 145 m3/s Distance to Basin Outlet: 1322 km
GRDC Catchment Area: 37075 km2 STN Catchment Area: 29400 km2
GRDC Interstation Area: 37075 km2 STN Interstation Area: 29400 km2
GRDC Station Runoff: 124 mm/yr STN Station Runoff: 156 mm/yr
GRDC Interstation Runoff: 124 mm/yr STN Interstation Runoff: 156 mm/yr
Station Field DescriptionsBasin Field Descriptions


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Site Descriptor Information Station Time Series Data


Hydrograph Station Data
Extreme Values Over Period Of Record
Month MeanQ
m3/s
MinQ
m3/s
MaxQ
m3/s
Jan 219.5 17.0 785.0
Feb 364.0 14.0 1113.0
Mar 259.5 4.0 1286.0
Apr 160.0 6.0 628.0
May 88.4 3.0 369.0
Jun 58.1 2.0 345.0
Jul 28.0 2.0 77.0
Aug 41.5 2.0 217.0
Sep 55.4 1.0 183.0
Oct 140.0 10.0 909.0
Nov 160.7 23.0 552.0
Dec 169.7 20.0 480.0