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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 06896100 Grand River at Knowlton, IA
Ringgold County, Iowa
Hydrologic Unit Code 10280101
Latitude  40°50'00", Longitude  94°20'00" NAD27
Drainage area 67.50  square miles
Output formats
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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)
241977-07-19 14:35CDTYesDASUSGS0.0141.20 GoodClearNONE1Imported Channel 1WADEunspeunkno0.01 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
231976-09-21 13:40CDTYesPJSUSGS0.1941.18 ExcellentClearNONE1Imported Channel 1WADEunspeunkno0.19 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
221975-08-13 13:40CDTYesJLRUSGS0.2341.09 UnspecifiedClearNONE1Imported Channel 1CRANunspeunkno0.23 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
211974-09-24 12:30CDTYesJLRUSGS0.1040.36 UnspecifiedClearNONE1Imported Channel 1CRANunspeunkno0.10 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
201971-09-20 13:30CDTYesREHUSGS0.1035.28 Good NONE1Imported Channel 1UNSPother 0.10 UNSPUNSPUNSPunknUNSPUNSPUNSP
191970-07-28 08:00CDTYesJGGUSGS0.1739.53 UnspecifiedClearNONE1Imported Channel 1OTHRQFLUM 0.17 UNSPUNSPUNSPunknUNSPUNSPUNSP
181969-09-22 09:15CSTYesJGGUSGS0.4034.67 Unspecified NONE1Imported Channel 1UNSPother 0.40 UNSPUNSPUNSPunknUNSPUNSPUNSP
171968-10-17 10:00CSTYesDASUSGS0.4535.02 GoodClearNONE1Imported Channel 1WADEunspeunkno0.455.000.860.53UNSPUNSPUNSPunknUNSPUNSPUNSP
161968-03-12 10:30CSTYesRDBUSGS0.9734.71 FairClearNONE1Imported Channel 1WADEunspeunkno0.977.002.200.44UNSPUNSPUNSPunknUNSPUNSPUNSP
151967-12-13 09:35CSTYesDASUSGS0.3535.02 FairClearNONE1Imported Channel 1WADEunspeunkno0.353.500.590.59UNSPUNSPUNSPunknUNSPUNSPUNSP
141966-08-10 08:00CSTYesRDBUSGS1.2939.52 UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno1.299.501.940.66UNSPUNSPUNSPunknUNSPUNSPUNSP
131964-10-27 15:50CSTYesDERUSGS6.35-38.93 GoodClearNONE1Imported Channel 1WADEunspeunkno6.3520.06.101.04UNSPUNSPUNSPunknUNSPUNSPUNSP
121963-10-31 13:05CSTYesEDSUSGS0.1739.92 GoodClearNONE1Imported Channel 1WADEunspeunkno0.172.500.270.63UNSPUNSPUNSPunknUNSPUNSPUNSP
111961-10-25 14:55CSTYesCWSUSGS11.838.810.000.30GoodClearNONE1Imported Channel 1WADEunspeunkno11.820.08.801.34UNSPUNSPUNSPunknUNSPUNSPUNSP
101960-10-26 14:20CSTYesSJMUSGS7.27-38.98 GoodClearNONE1Imported Channel 1WADEunspeunkno7.2714.05.821.25UNSPUNSPUNSPunknUNSPUNSPUNSP
91960-10-26 13:20CSTYesJGGUSGS7.4138.97 ExcellentClearNONE1Imported Channel 1WADEunspeunkno7.418.805.401.37UNSPUNSPUNSPunknUNSPUNSPUNSP
81960-10-26 12:40CSTYes--SUSGS7.53-38.90 GoodClearNONE1Imported Channel 1WADEunspeunkno7.5315.05.691.32UNSPUNSPUNSPunknUNSPUNSPUNSP
71960-10-26 11:00CSTYesEDSUSGS7.2338.94 GoodClearNONE1Imported Channel 1WADEunspeunkno7.239.505.161.40UNSPUNSPUNSPunknUNSPUNSPUNSP
61960-10-26 08:50CSTYesRHTUSGS7.1138.96 UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno7.1110.05.151.38UNSPUNSPUNSPunknUNSPUNSPUNSP
51960-09-13 12:00CSTYesJGGUSGS1.20 UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno1.204.001.011.19UNSPUNSPUNSPunknUNSPUNSPUNSP
41960-09-12 14:45CSTYesRDBUSGS0.9139.13 FairClearNONE1Imported Channel 1WADEunspeunkno0.913.000.861.00UNSPUNSPUNSPunknUNSPUNSPUNSP
31959-07-29 14:05CSTYesFELUSGS1.4038.81 UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno1.404.001.560.90UNSPUNSPUNSPunknUNSPUNSPUNSP
21958-10-14 11:45CSTYesFELUSGS1.7238.75 UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno1.7212.03.070.53UNSPUNSPUNSPunknUNSPUNSPUNSP