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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 06600400 West Branch Floyd River near Merrill, IA
Plymouth County, Iowa
Hydrologic Unit Code 10230002
Latitude  42°44'59", Longitude  96°14'26" NAD27
Drainage area 232.00  square miles
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)
201976-08-25 14:40CDTYesJGGUSGS3.4624.87 FairClearNONE1Imported Channel 1WADEunspeunkno3.4610.02.881.20UNSPUNSPUNSPunknUNSPUNSPUNSP
191975-10-21 09:25CDTYesJGGUSGS7.74-24.60 FairClearNONE1Imported Channel 1WADEunspeunkno7.7416.08.800.88UNSPUNSPUNSPunknUNSPUNSPUNSP
181974-09-26 08:50CDTYesRDBUSGS6.8624.30 GoodClearNONE1Imported Channel 1WADEunspeunkno6.8615.05.951.15UNSPUNSPUNSPunknUNSPUNSPUNSP
171972-10-17 08:45CDTYesRDBUSGS10.124.33 GoodClearNONE1Imported Channel 1WADEunspeunkno10.124.011.60.87UNSPUNSPUNSPunknUNSPUNSPUNSP
161971-09-02 08:50CDTYesRDBUSGS8.11-24.51 GoodClearNONE1Imported Channel 1WADEunspeunkno8.1112.05.351.52UNSPUNSPUNSPunknUNSPUNSPUNSP
151970-09-02 10:05CDTYesRDBUSGS5.2424.22 GoodClearNONE1Imported Channel 1WADEunspeunkno5.2415.04.431.13UNSPUNSPUNSPunknUNSPUNSPUNSP
141969-10-10 11:00CSTYesEDSUSGS9.6824.23 GoodClearNONE1Imported Channel 1WADEunspeunkno9.6818.07.861.23UNSPUNSPUNSPunknUNSPUNSPUNSP
131968-09-12 08:30CSTYesRDBUSGS1.4023.44 FairClearNONE1Imported Channel 1WADEunspeunkno1.408.001.740.80UNSPUNSPUNSPunknUNSPUNSPUNSP
121968-06-12 09:10CSTYesRDBUSGS1.7623.19 FairClearNONE1Imported Channel 1WADEunspeunkno1.765.501.601.10UNSPUNSPUNSPunknUNSPUNSPUNSP
111967-09-12 07:20CSTYesRDBUSGS3.0923.73 FairClearNONE1Imported Channel 1WADEunspeunkno3.0911.02.501.24UNSPUNSPUNSPunknUNSPUNSPUNSP
101966-08-16 09:10CSTYesRDBUSGS4.6023.81 FairClearNONE1Imported Channel 1WADEunspeunkno4.609.003.530.00UNSPUNSPUNSPunknUNSPUNSPUNSP
91964-10-14 10:05CSTYesCWSUSGS3.94-23.050.000.20FairClearNONE1Imported Channel 1WADEunspeunkno3.9414.04.580.86UNSPUNSPUNSPunknUNSPUNSPUNSP
81963-10-01 12:50CSTYesEDSUSGS2.8523.05 GoodClearNONE1Imported Channel 1CRANunspeunkno2.8518.06.040.47UNSPUNSPUNSPunknUNSPUNSPUNSP
71961-09-27 07:35CSTYesJLCUSGS9.9122.840.000.20FairClearNONE1Imported Channel 1WADEunspeunkno9.9115.08.681.14UNSPUNSPUNSPunknUNSPUNSPUNSP
61960-10-10 14:30CSTYesJLCUSGS11.5-22.460.000.30FairClearNONE1Imported Channel 1WADEunspeunkno11.517.07.981.46UNSPUNSPUNSPunknUNSPUNSPUNSP
51959-08-11 14:00CSTYesJLCUSGS4.9922.650.000.30GoodClearNONE1Imported Channel 1WADEunspeunkno4.9913.04.861.02UNSPUNSPUNSPunknUNSPUNSPUNSP
41959-05-18 13:20CSTYesCWSUSGS2.6522.780.000.30GoodClearNONE1Imported Channel 1WADEunspeunkno2.6511.04.460.59UNSPUNSPUNSPunknUNSPUNSPUNSP
31958-10-15 15:35CSTYesRHTUSGS0.92-22.96 UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno0.921.600.591.55UNSPUNSPUNSPunknUNSPUNSPUNSP
21958-05-13 11:30CSTYesCWSUSGS6.2622.67-0.010.30GoodClearNONE1Imported Channel 1CRANunspeunkno6.2614.07.910.79UNSPUNSPUNSPunknUNSPUNSPUNSP
11957-09-30 11:50CSTYesRHTUSGS5.6521.86 UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno5.6510.010.00.56UNSPUNSPUNSPunknUNSPUNSPUNSP
1A1953-06-08 -- ----YesCOEUSGS34800 UnspecifiedUnspecifedNONE1Imported Channel 1OTHRQIDIR 34800 UNSPUNSPUNSPunknUNSPUNSPUNSP