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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 01589350 GWYNNS FALLS AT US 1 AT BALTIMORE, MD
Baltimore City, Maryland
Hydrologic Unit Code 02060003
Latitude  39°16'37", Longitude  76°39'43" NAD27
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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)
101995-11-21 -- ----YesRHP/RWSUSGS48.2 GoodClearNONE1Imported Channel 1WADEunspeunkno48.235.833.61.44UNSPUNSPUNSPunknUNSPUNSPUNSP
91995-10-19 11:40EDTYesJJMUSGS31.2 GoodClearNONE1Imported Channel 1WADEunspeunkno31.228.525.21.24UNSPUNSPUNSPunknUNSPUNSPUNSP
81995-07-26 11:20EDTYesJJMUSGS36.7 GoodClearNONE1Imported Channel 1WADEunspeunkno36.730.027.71.32UNSPUNSPUNSPunknUNSPUNSPUNSP
71995-06-21 11:40EDTYesRWS/RHPUSGS34.0 GoodClearNONE1Imported Channel 1WADEunspeunkno34.032.527.21.25UNSPUNSPUNSPunknUNSPUNSPUNSP
61995-05-24 13:25EDTYesJJMUSGS43.6 FairClearNONE1Imported Channel 1WADEunspeunkno43.632.030.21.44UNSPUNSPUNSPunknUNSPUNSPUNSP
51995-04-26 11:50EDTYesJJMUSGS42.0 GoodClearNONE1Imported Channel 1WADEunspeunkno42.030.527.71.52UNSPUNSPUNSPunknUNSPUNSPUNSP
41995-03-22 13:35ESTYesRWS/RHPUSGS40.0 GoodClearNONE1Imported Channel 1WADEunspeunkno40.031.529.81.34UNSPUNSPUNSPunknUNSPUNSPUNSP
31995-02-22 15:10ESTYesJJMUSGS52.1 FairClearNONE1Imported Channel 1WADEunspeunkno52.133.031.11.68UNSPUNSPUNSPunknUNSPUNSPUNSP
21995-01-25 13:10ESTYesJJMUSGS49.0 GoodClearNONE1Imported Channel 1WADEunspeunkno49.039.036.31.35UNSPUNSPUNSPunknUNSPUNSPUNSP
11994-12-21 14:45ESTYesRWS/RHPUSGS32.8 GoodClearNONE1Imported Channel 1WADEunspeunkno32.842.033.90.97UNSPUNSPUNSPunknUNSPUNSPUNSP