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Streamflow Measurements for the Nation

! Streamflow measurement pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline and new pages.

USGS 01644110 SYCOLIN CREEK NEAR LEESBURG, VA
Loudoun County, Virginia
Hydrologic Unit Code 02070008
Latitude  39°04'20", Longitude  77°31'09" NAD27
Drainage area 17.0  square miles
Output formats
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Meas.
Number		   Date       Time Time
Datum		 Measurement
Used?		   Who Measuring
Agency		 Stream
flow
(ft3/s)		 Gage
Height
(ft)		 GH
Change
(ft)		 Meas.
Duration
(hr)		 Meas.
Rated		   Control Flow
Adjust.
Code 
132002-11-20 12:45ESTYesDWHUSGS19.0 Good NONE
122002-08-20 13:05EDTYesDWHUSGS0.39 Fair NONE
112002-06-26 12:30EDTYesDWHUSGS2.23 Fair NONE
102001-11-06 12:20ESTYesDWHUSGS2.40 Good NONE
91999-08-17 11:20EDTYesDWHUSGS0.85 Good NONE
81997-09-02 11:00EDTYesDWHUSGS0.94 Fair NONE
71997-06-25 10:30EDTYesDWHUSGS3.80 Good NONE
61996-09-23 12:05EDTYesDWHUSGS22.1 Good NONE
51995-08-29 13:10EDTYesDWHUSGS1.54 Fair NONE
41995-06-07 09:30EDTYesDWHUSGS2.33 Fair NONE
31994-06-07 11:20EDTYesDWHUSGS4.65 Good NONE
21993-09-14 14:00EDTYesDWHUSGS0.73 Fair NONE
11993-07-22 12:00EDTYesDWHUSGS1.96 Good NONE