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USGS 01478120 East Branch White Clay Creek at Avondale, PA

  Stream Site

DESCRIPTION:
Latitude 39°49'42",   Longitude 75°46'52"   NAD27
Chester County, Pennsylvania, Hydrologic Unit 02040205
Drainage area: 11.3 square miles
Datum of gage: 264.65 feet above   NAVD88.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2007-10-05  2025-11-13  
 Daily Data
    Temperature, water, degrees Celsius  2019-11-15  2024-12-02  5475 
    Discharge, cubic feet per second  2007-10-01  2025-11-11  6614 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2019-11-15  2024-12-02  5463 
    pH, water, unfiltered, field, standard units  2007-10-06  2014-10-19  7224 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2020-07-23  2022-10-02  2364 
 Daily Statistics 
    Temperature, water, degrees Celsius  2019-11-15  2024-12-02 1825 
    Discharge, cubic feet per second  2007-10-01  2025-04-07 6399 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2019-11-15  2024-12-02 1821 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2020-07-23  2022-10-02 788 
 Monthly Statistics 
    Temperature, water, degrees Celsius  2019-11  2024-12  
    Discharge, cubic feet per second  2007-10  2025-04  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2019-11  2024-12  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2020-07  2022-10  
 Annual Statistics 
    Temperature, water, degrees Celsius  2020  2025  
    Discharge, cubic feet per second  2008  2025  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2020  2025  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2020  2023  
 Peak streamflow 2008-02-13  2021-09-01  14 
 Field measurements 1982-10-20  2025-09-17  191 
 Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP) 1970-06-02  2023-10-27  122 
 Water-Year Summary 2006  2025  20 
 Revisions  Loading...
OPERATION:
Record for this site is maintained by the USGS Pennsylvania Water Science Center
Email questions about this site to Pennsylvania Water Science Center Water-Data Inquiries