Mississippi Basin
Station: Alton, Ill.


GRDC Station Information
STN Derived Subbasin Information
Station Name (GRDC ID): Alton, Ill. (4119800) Basin Name: Mississippi
River Name: Mississippi Next Downstream Station:Vicksburg, Miss. (4127800)
GRDC Country Code: US Distance to Next Downstream Station: 944 km
Start Year [Month]: 1927 [10] Upstream Station(s): Clinton, Iowa (4119650)
End Year [Month]: 1984 [12]
Mean Discharge: 2896 m3/s
Minimum Discharge: 598 m3/s
Maximum Discharge: 11100 m3/s Length of Upstream Mainstem: 1292 km
Mean Interstation Discharge: 1429 m3/s Distance to Basin Outlet: 1276 km
GRDC Catchment Area: 444185 km2 STN Catchment Area: 440389 km2
GRDC Interstation Area: 222481 km2 STN Interstation Area: 212744 km2
GRDC Station Runoff: 206 mm/yr STN Station Runoff: 207 mm/yr
GRDC Interstation Runoff: 203 mm/yr STN Interstation Runoff: 212 mm/yr
Station Field DescriptionsBasin Field Descriptions


Download
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 1899.1 670.0 4980.0
Feb 2312.6 728.0 5000.0
Mar 3866.0 1086.0 7830.0
Apr 5356.8 1628.0 11100.0
May 4801.3 1321.0 11000.0
Jun 3937.4 898.0 8984.0
Jul 3107.1 857.0 7380.0
Aug 1922.5 632.0 4210.0
Sep 1815.7 598.0 4285.0
Oct 1866.8 620.0 5272.0
Nov 2014.4 645.0 5029.0
Dec 1847.7 662.0 7961.0