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  • Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.
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  • USGS has scheduled planned maintenance to our IT infrastructure, starting Tuesday, June 28, 2022, from 8:00-10:00am Eastern Daylight Time (EDT). During the maintenance period, there will be a short interruption in the availability of the most recent time-series data. Any backlog will be made available following conclusion of the scheduled maintenance.
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We're modernizing Water Data for the Nation delivery. Find out what this means for you. This page will be discontinued Jan.1, 2023.

USGS 01654500 LONG BRANCH NEAR ANNANDALE, VA

PROVISIONAL DATA SUBJECT TO REVISION

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Station operated in cooperation with Fairfax County, Virginia

Gage is being relocated. During this transition period, discharge data is only partially available. We are working to get discharge back online as soon as possible. We appreciate your patience during this time.
NOTE: During storm events, backwater effects on stage and discharge determinations at this station are likely. Streamflow data displayed on this page may be significantly different from actual values during these events. Adjustment of data for backwater effects can only be done after detailed analysis. Users are encouraged to contact this office for more information.
This station managed by the Richmond Field Office.

Available Parameters Available Period
  
2013-02-08  2022-06-28
2013-02-08  2022-06-28
2013-02-07  2022-06-28
2013-02-08  2022-06-28
2013-02-08  2022-06-28
2013-02-08  2022-06-28
2013-02-08  2017-08-31
2017-08-31  2022-06-28
2022-02-28  2022-06-28







 (7)
 
  -- or --

 

 
Summary of all available data for this site
Instantaneous-data availability statement

Discharge, cubic feet per second
Most recent instantaneous value: 1.32 06-28-2022   13:55 EDT
Graph of Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Jun 28 based on 18 water years of record more
Min
(2017)		 25th
percen-
tile		 Most Recent
Instantaneous
Value Jun 28		 Median 75th
percen-
tile		 Mean Max
(2013)
0.15 1.1 1.32 1.9 2.9 5.5 57.3

Gage height, feet
Most recent instantaneous value: 2.62 06-28-2022   13:55 EDT
Graph of Gage height, feet

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