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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 03099550 Mahoning River above outfall near Hillsville, PA
Lawrence County, Pennsylvania
Hydrologic Unit Code 05030103
Latitude  41°01'12.0", Longitude  80°29'19.8" NAD83
Drainage area 1,090  square miles
Gage datum 781 feet above NAVD88
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 		 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)
42023-08-15 09:30:13EDTYesIBLUSGS846 FairVegetationModerateNONE2Left channelBRDSQADCPVADCP43.565.374.00.59FIRMGRVLUNEVSTDYUNSPUNFMUNSP
42023-08-15 09:30:13EDTYesIBLUSGS846 FairVegetationModerateNONE1Right channelBRDSQADCPVADCP80388.32623.06FIRMCBLSUNEVSTDYUNSPUNFMUNSP
32023-05-10 10:58:13EDTYesIBL/LWE/JLCUSGS999 FairClearNONE1Main channelBRDSQADCPVADCP9991623942.54FIRMBLDRUNEVSTDYUNSPUNKNUNSP
22023-03-13 13:22:23EDTYesIBL/LWE/JLCUSGS867 Fair NONE1Mahoning ABOVE outfallBRDSQADCPVADCP8671723692.35FIRMBLDRUNEVSTDYUNSPUNKNUNSP
12022-11-30 14:33:55ESTYesIBL/LWEUSGS3080 FairUnspecifedNONE1Above outfall near HillsvilleBRDSQADCPVADCP30801937733.98FIRMBLDRUNEVSTDYUNSPUNKNUNSP