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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 01399575 Rockaway C near Potterstown NJ
Hunterdon County, New Jersey
Hydrologic Unit Code 02030105
Latitude  40°38'36", Longitude  74°45'37" NAD83
Drainage area 18.50  square miles
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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)
111977-11-13 -- ----YesRSCUSGS20.92.56 GoodClearNONE1Imported Channel 1WADEunspeunkno20.934.026.20.80UNSPUNSPUNSPunknUNSPUNSPUNSP
101977-07-06 -- ----YesDWJ/ CMUSGS8.822.40 GoodClearNONE1Imported Channel 1WADEunspeunkno8.8228.419.00.46UNSPUNSPUNSPunknUNSPUNSPUNSP
91977-06-26 -- ----YesWJPUSGS22.22.57 GoodClearNONE1Imported Channel 1WADEunspeunkno22.232.924.60.90UNSPUNSPUNSPunknUNSPUNSPUNSP
81977-06-09 -- ----YesJBCUSGS50.72.79 GoodClearNONE1Imported Channel 1WADEunspeunkno50.734.036.21.40UNSPUNSPUNSPunknUNSPUNSPUNSP
71977-06-09 -- ----YesJBCUSGS33.82.67 GoodClearNONE1Imported Channel 1WADEunspeunkno33.834.527.71.22UNSPUNSPUNSPunknUNSPUNSPUNSP
61977-06-05 -- ----YesRSCUSGS12.42.47 GoodClearNONE1Imported Channel 1WADEunspeunkno12.421.014.30.87UNSPUNSPUNSPunknUNSPUNSPUNSP
51977-05-07 -- ----YesRSCUSGS30.42.62 GoodClearNONE1Imported Channel 1WADEunspeunkno30.432.029.41.03UNSPUNSPUNSPunknUNSPUNSPUNSP
41977-03-13 -- ----YesRSCUSGS1133.37 GoodClearNONE1Imported Channel 1WADEunspeunkno11338.055.62.03UNSPUNSPUNSPunknUNSPUNSPUNSP
31977-03-04 -- ----YesMCYUSGS1273.51 Fair NONE1Imported Channel 1WADEunspeunkno12740.036.73.46UNSPUNSPUNSPunknUNSPUNSPUNSP
21976-12-07 -- ----YesRSCUSGS2614.22 GoodIceCoverNONE1Imported Channel 1WADEunspeunkno26142.01012.58UNSPUNSPUNSPunknUNSPUNSPUNSP
11976-12-07 -- ----YesRSCUSGS19.22.42 GoodIceCoverNONE1Imported Channel 1WADEunspeunkno19.224.018.41.04UNSPUNSPUNSPunknUNSPUNSPUNSP