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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 01646700 PIMMIT RUN AT ARLINGTON, VA
Fairfax County, Virginia
Hydrologic Unit Code 02070010
Latitude  38°56'10", Longitude  77°08'22" NAD27
Drainage area 8.26  square miles
Gage datum 129.12 feet above NGVD29
Output formats
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Tab-separated data with channel data
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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 		 Channel
Number		 Channel
Name		 Meas.
type 		 Stream
flow
method 		 Velocity
method 		 Channel
flow
(ft3/s)		 Channel
width
(ft)		 Channel
area
(ft2)		 Channel
vel.
(ft/s)		 Channel
stability 		 Channel
material 		 Channel
evenness 		 Long.
vel.
desc. 		 Horz.
vel.
desc. 		 Vert.
vel.
desc. 		 Channel
loc.
code 		 Channel
loc.
dist.(ft)
361977-08-05 -- ----YesJRGUSGS1.17 Fair NONE1Imported Channel 1UNSPQSCMMunkno1.174.301.400.85UNSPUNSPUNSPunknUNSPUNSPUNSP
351974-09-25 -- ----YesMPSUSGS1.87 Fair NONE1Imported Channel 1UNSPQSCMMunkno1.8717.05.920.32UNSPUNSPUNSPunknUNSPUNSPUNSP
341973-09-28 -- ----YesDHRUSGS1.90 Fair NONE1Imported Channel 1UNSPQSCMMunkno1.9017.00.633.02UNSPUNSPUNSPunknUNSPUNSPUNSP
331973-09-06 -- ----YesPLSUSGS1.70 Fair NONE1Imported Channel 1UNSPQSCMMunkno1.7013.14.230.40UNSPUNSPUNSPunknUNSPUNSPUNSP
321972-09-07 -- ----YesRAWUSGS1.70 FairClearNONE1Imported Channel 1UNSPQSCMMunkno1.7014.37.020.24UNSPUNSPUNSPunknUNSPUNSPUNSP
311971-09-28 -- ----YesRAWUSGS2.42 Fair NONE1Imported Channel 1UNSPQSCMMunkno2.4210.68.060.30UNSPUNSPUNSPunknUNSPUNSPUNSP
301970-09-22 -- ----YesRAWUSGS0.30 GoodClearNONE1Imported Channel 1UNSPQSCMMunkno0.304.701.340.22UNSPUNSPUNSPunknUNSPUNSPUNSP
291970-08-31 -- ----YesXXUSGS0.63 GoodClearNONE1Imported Channel 1UNSPQSCMMunkno0.634.501.570.40UNSPUNSPUNSPunknUNSPUNSPUNSP
281969-08-28 23:00ESTYesFGGUSGS3.95 Good NONE1Imported Channel 1UNSPQSCMMunkno3.958.504.450.89UNSPUNSPUNSPunknUNSPUNSPUNSP
27C1968-09-09 23:00ESTYesFPK/TLCUSGS18807.20 Unspecified NONE1Imported Channel 1OTHRQIDIR 1880 UNSPUNSPUNSPunknUNSPUNSPUNSP
261968-08-22 23:00ESTYesFGGUSGS0.72 Fair NONE1Imported Channel 1UNSPQSCMMunkno0.722.400.750.96UNSPUNSPUNSPunknUNSPUNSPUNSP
251967-08-16 23:00ESTYesFPKUSGS0.61 FairClearNONE1Imported Channel 1UNSPQSCMMunkno0.612.500.990.62UNSPUNSPUNSPunknUNSPUNSPUNSP
24C1966-09-14 -- ----YesFPK/FGGUSGS27008.79 Unspecified NONE1Imported Channel 1OTHRQIDIR 2700 UNSPUNSPUNSPunknUNSPUNSPUNSP
231966-09-01 -- ----YesFGGUSGS0.080.83 FairClearNONE1Imported Channel 1UNSPQSCMMunkno0.082.000.190.42UNSPUNSPUNSPunknUNSPUNSPUNSP
221966-08-25 -- ----YesFGGUSGS0.090.85 Fair NONE1Imported Channel 1UNSPQSCMMunkno0.092.000.200.45UNSPUNSPUNSPunknUNSPUNSPUNSP
201965-11-16 -- ----YesFGG/FPKUSGS1.110.27 FairClearNONE1Imported Channel 1UNSPQSCMMunkno1.117.202.250.49UNSPUNSPUNSPunknUNSPUNSPUNSP
191965-11-16 -- ----YesFGG/FPKUSGS1.080.27 FairClearNONE1Imported Channel 1UNSPQSCMMunkno1.087.202.280.48UNSPUNSPUNSPunknUNSPUNSPUNSP
181965-11-16 -- ----YesFGG/FPKUSGS1.000.25 FairClearNONE1Imported Channel 1UNSPQSCMMunkno1.006.702.230.45UNSPUNSPUNSPunknUNSPUNSPUNSP
171965-09-09 -- ----YesFGGUSGS1.30 FairClearNONE1Imported Channel 1UNSPQSCMMunkno1.3016.05.950.22UNSPUNSPUNSPunknUNSPUNSPUNSP
16C1965-07-18 -- ----YesFPK/JLUSGS5493.73 Unspecified NONE1Imported Channel 1OTHRQIDIR 549 UNSPUNSPUNSPunknUNSPUNSPUNSP
151965-02-25 -- ----YesDGAUSGS74.91.24 FairClearNONE1Imported Channel 1UNSPQSCMMunkno74.923.028.62.62UNSPUNSPUNSPunknUNSPUNSPUNSP
141964-08-25 -- ----YesGUSGS0.46 Fair NONE1Imported Channel 1UNSPQSCMMunkno0.465.201.470.32UNSPUNSPUNSPunknUNSPUNSPUNSP
131963-08-19 -- ----YesLGCUSGS0.100.04 PoorClearNONE1Imported Channel 1UNSPQSCMMunkno0.103.300.560.18UNSPUNSPUNSPunknUNSPUNSPUNSP
121963-06-03 -- ----YesDGAUSGS2032.09 GoodClearNONE1Imported Channel 1UNSPQSCMMunkno20329.058.73.46UNSPUNSPUNSPunknUNSPUNSPUNSP
111962-08-30 -- ----YesDGAUSGS0.290.10 PoorDebrisLightNONE1Imported Channel 1UNSPQSCMMunkno0.291.800.350.83UNSPUNSPUNSPunknUNSPUNSPUNSP
101962-02-26 -- ----YesFGGUSGS1331.77 Fair NONE1Imported Channel 1UNSPQSCMMunkno13324.045.22.93UNSPUNSPUNSPunknUNSPUNSPUNSP
91961-10-19 -- ----YesFGGUSGS1.500.33 FairClearNONE1Imported Channel 1UNSPQSCMMunkno1.5016.05.820.26UNSPUNSPUNSPunknUNSPUNSPUNSP
81961-08-26 -- ----YesDGAUSGS73.71.35 FairClearNONE1Imported Channel 1UNSPQSCMMunkno73.723.531.42.34UNSPUNSPUNSPunknUNSPUNSPUNSP
71961-08-26 -- ----YesDGAUSGS1361.84 FairClearNONE1Imported Channel 1UNSPQSCMMunkno13627.043.23.15UNSPUNSPUNSPunknUNSPUNSPUNSP
61961-08-26 -- ----YesDGAUSGS8103.88 FairClearNONE1Imported Channel 1UNSPQSCMMunkno81024.01037.80UNSPUNSPUNSPunknUNSPUNSPUNSP
51961-08-23 -- ----YesFGGUSGS30.50.92 Unspecified NONE1Imported Channel 1UNSPQSCMMunkno30.522.020.71.49UNSPUNSPUNSPunknUNSPUNSPUNSP
41961-04-13 -- ----YesFGGUSGS1221.66 UnspecifiedClearNONE1Imported Channel 1UNSPQSCMMunkno12228.042.42.87UNSPUNSPUNSPunknUNSPUNSPUNSP
31961-02-23 -- ----YesFGGUSGS76.61.54 UnspecifiedClearNONE1Imported Channel 1UNSPQSCMMunkno76.623.025.03.06UNSPUNSPUNSPunknUNSPUNSPUNSP
21960-10-20 -- ----YesFGGUSGS39.01.11 UnspecifiedClearNONE1Imported Channel 1UNSPQSCMMunkno39.025.020.51.90UNSPUNSPUNSPunknUNSPUNSPUNSP
11960-09-09 -- ----Yes/USGS3.48 Unspecified NONE1Imported Channel 1UNSPother 3.48 UNSPUNSPUNSPunknUNSPUNSPUNSP