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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 01590800 PATUXENT RIVER AT MULLINIX, MD
Howard County, Maryland
Hydrologic Unit Code 02060006
Latitude  39°17'40", Longitude  77°08'42" NAD27
Drainage area 10.7  square miles
Gage datum 510 feet above NGVD29
Output formats
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HTML table without channel data
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)
151990-06-27 10:00EDTYesJRDUSGS4.95 GoodClearNONE1Imported Channel 1WADEunspeunkno4.9518.312.30.40UNSPUNSPUNSPunknUNSPUNSPUNSP
141990-04-27 09:10EDTYesJRDUSGS11.6 GoodClearNONE1Imported Channel 1WADEunspeunkno11.618.616.50.70UNSPUNSPUNSPunknUNSPUNSPUNSP
131990-03-29 09:05ESTYesJRDUSGS10.8 GoodClearNONE1Imported Channel 1WADEunspeunkno10.817.616.10.68UNSPUNSPUNSPunknUNSPUNSPUNSP
121990-03-08 10:25ESTYesJRDUSGS8.16 GoodClearNONE1Imported Channel 1WADEunspeunkno8.1617.315.20.54UNSPUNSPUNSPunknUNSPUNSPUNSP
111989-10-05 14:40EDTYesJRD/MDTUSGS2.65 GoodClearNONE1Imported Channel 1WADEunspeunkno2.6515.915.60.17UNSPUNSPUNSPunknUNSPUNSPUNSP
101989-04-26 11:45EDTYesJRD/MTUSGS10.9 GoodClearNONE1Imported Channel 1WADEunspeunkno10.921.324.10.45UNSPUNSPUNSPunknUNSPUNSPUNSP
91988-12-20 12:50ESTYesJRD/MTUSGS2.52 GoodClearNONE1Imported Channel 1WADEunspeunkno2.525.203.190.79UNSPUNSPUNSPunknUNSPUNSPUNSP
81988-12-05 10:15ESTYesJRDUSGS3.18 GoodClearNONE1Imported Channel 1WADEunspeunkno3.185.303.480.92UNSPUNSPUNSPunknUNSPUNSPUNSP
71988-10-13 11:30EDTYesJRDUSGS1.48 GoodClearNONE1Imported Channel 1WADEunspeunkno1.485.302.930.50UNSPUNSPUNSPunknUNSPUNSPUNSP
61988-08-18 13:30EDTYesJRDUSGS1.32 GoodClearNONE1Imported Channel 1WADEunspeunkno1.324.202.820.47UNSPUNSPUNSPunknUNSPUNSPUNSP
51988-07-01 11:10EDTYesJRDUSGS5.92 GoodClearNONE1Imported Channel 1WADEunspeunkno5.9212.411.70.50UNSPUNSPUNSPunknUNSPUNSPUNSP
41988-03-19 10:05ESTYesJRDUSGS10.4 GoodClearNONE1Imported Channel 1WADEunspeunkno10.413.714.00.75UNSPUNSPUNSPunknUNSPUNSPUNSP
31988-03-02 10:35ESTYesJRDUSGS12.5 GoodClearNONE1Imported Channel 1WADEunspeunkno12.516.416.10.78UNSPUNSPUNSPunknUNSPUNSPUNSP
21987-11-09 11:40ESTYesJRDUSGS4.62 GoodClearNONE1Imported Channel 1WADEunspeunkno4.629.307.850.59UNSPUNSPUNSPunknUNSPUNSPUNSP
11987-10-20 11:10EDTYesJRDUSGS4.30 GoodClearNONE1Imported Channel 1WADEunspeunkno4.309.407.640.56UNSPUNSPUNSPunknUNSPUNSPUNSP