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USGS 05474500 Mississippi River at Keokuk, IA

  Stream Site

DESCRIPTION:
Latitude 40°23'37",   Longitude 91°22'27"   NAD27
Lee County, Iowa, Hydrologic Unit 07080104
Drainage area: 119,000 square miles
Datum of gage: 477.41 feet above   NGVD29.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2021-05-06  2023-02-01  
 Daily Data
    Temperature, water, degrees Celsius  1974-11-04  2022-03-08  2352 
    Temperature, water, degrees Celsius  2021-05-07  2023-02-01  624 
    Discharge, cubic feet per second  1878-01-01  2022-08-30  52837 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1974-11-04  2021-11-30  2346 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2021-05-07  2023-02-01  617 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2021-05-06  2023-02-01  634 
    pH, water, unfiltered, field, standard units  2021-05-20  2023-02-01  614 
    Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, micrograms per liter  2021-05-07  2023-02-01  623 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2021-05-07  2023-02-01  620 
 Daily Statistics 
    Temperature, water, degrees Celsius  2021-05-07  2022-09-07 477 
    Discharge, cubic feet per second  1878-01-01  2020-10-26 52164 
 Monthly Statistics 
    Temperature, water, degrees Celsius  2021-05  2022-09  
    Discharge, cubic feet per second  1878-01  2020-10  
 Annual Statistics 
    Temperature, water, degrees Celsius  2021  2022  
    Discharge, cubic feet per second  1878  2021  
 Peak streamflow 1851-06-06  2020-04-14  144 
 Field measurements 1934-06-28  2022-10-13  259 
 Field/Lab water-quality samples 1944-07-01  2021-05-20  248 
 Water-Year Summary 2006  2021  16 
 Revisions  Loading...
OPERATION:
Record for this site is maintained by the USGS Iowa Water Science Center
Email questions about this site to Iowa Water Science Center Water-Data Inquiries