Orange Basin
Station: Seaka


GRDC Station Information
STN Derived Subbasin Information
Station Name (GRDC ID): Seaka (1259150) Basin Name: Orange
River Name: Senqu Next Downstream Station:Upington (1159300)
GRDC Country Code: LS Distance to Next Downstream Station: 807 km
Start Year [Month]: 1972 [9] Upstream Station(s): None
End Year [Month]: 1984 [12]
Mean Discharge: 117 m3/s
Minimum Discharge: 2 m3/s
Maximum Discharge: 729 m3/s Length of Upstream Mainstem: 270 km
Mean Interstation Discharge: 117 m3/s Distance to Basin Outlet: 1421 km
GRDC Catchment Area: 19875 km2 STN Catchment Area: 18893 km2
GRDC Interstation Area: 19875 km2 STN Interstation Area: 18893 km2
GRDC Station Runoff: 186 mm/yr STN Station Runoff: 196 mm/yr
GRDC Interstation Runoff: 186 mm/yr STN Interstation Runoff: 196 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 198.7 11.0 643.0
Feb 270.0 25.0 729.0
Mar 197.3 19.0 718.0
Apr 128.6 14.0 495.0
May 45.2 9.0 121.0
Jun 33.1 5.0 111.0
Jul 19.8 2.0 50.0
Aug 40.8 3.0 233.0
Sep 51.9 4.0 156.0
Oct 118.9 11.0 606.0
Nov 157.7 45.0 476.0
Dec 146.8 20.0 398.0