Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

Click to hideNews Bulletins
  • March 16, 2018 - There has been a recent change to the "Subscribe for system changes" function and it is unavailable.

    Please send an email to gs-w_support_nwisweb@usgs.gov if you would like us to add you manually until we have addressed the problem.

USGS 01401590 Rock Bk at Blawenburg NJ

  Stream Site

Latitude 40°24'40",   Longitude 74°42'09"   NAD83
Somerset County, New Jersey, Hydrologic Unit 02030105
Drainage area: 8.02 square miles
Data Type Begin Date End Date Count
 Field measurements 1962-07-10  2017-09-13  33 
 Field/Lab water-quality samples 1967-05-01  1967-05-01  1 

Additional Data Sources

Begin Date

End Date

 Annual Water-Data Report (pdf)  **offsite** 2011  2013  3 
Record for this site is maintained by the USGS New Jersey Water Science Center
Email questions about this site to New Jersey Water Science Center Water-Data Inquiries