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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 06897900 Thompson River near Grand River, IA
Decatur County, Iowa
Hydrologic Unit Code 10280102
Latitude  40°52'00", Longitude  93°58'00" NAD27
Drainage area 401.00  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)
191977-07-20 12:25CDTYesDASUSGS0.0527.77 GoodClearNONE1Imported Channel 1WADEunspeunkno0.05 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
181976-09-20 13:00CDTYesDASUSGS5.9127.26 GoodClearNONE1Imported Channel 1WADEunspeunkno5.9124.010.60.56UNSPUNSPUNSPunknUNSPUNSPUNSP
171975-08-12 15:10CDTYesJLRUSGS11.126.96 GoodClearNONE1Imported Channel 1WADEunspeunkno11.128.012.80.87UNSPUNSPUNSPunknUNSPUNSPUNSP
161974-09-27 14:00CDTYesJLRUSGS2.4527.44 UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno2.456.501.781.38UNSPUNSPUNSPunknUNSPUNSPUNSP
151971-09-20 15:20CDTYesJRSUSGS2.4127.040.000.60GoodClearNONE1Imported Channel 1WADEunspeunkno2.419.502.650.91UNSPUNSPUNSPunknUNSPUNSPUNSP
141970-07-27 11:45CDTYesDASUSGS4.8727.38 GoodClearNONE1Imported Channel 1WADEunspeunkno4.8719.07.940.61UNSPUNSPUNSPunknUNSPUNSPUNSP
131969-09-22 14:40CSTYesILBUSGS25.526.73 GoodClearNONE1Imported Channel 1WADEunspeunkno25.536.020.21.26UNSPUNSPUNSPunknUNSPUNSPUNSP
12A1968-10-16 14:00CSTYesJTFUSGS0.2723.07 UnspecifiedClearNONE1Imported Channel 1UNSPother 0.27 UNSPUNSPUNSPunknUNSPUNSPUNSP
121968-10-16 12:10CSTYesWJMUSGS4.9527.540.00 GoodClearNONE1Imported Channel 1WADEunspeunkno4.9518.012.10.41UNSPUNSPUNSPunknUNSPUNSPUNSP
111968-03-12 13:20CSTYesRDBUSGS27.226.94 FairClearNONE1Imported Channel 1WADEunspeunkno27.238.033.90.80UNSPUNSPUNSPunknUNSPUNSPUNSP
10A1967-12-12 12:40CSTYesRDBUSGS11.427.26 FairClearNONE1Imported Channel 1WADEunspeunkno11.416.08.341.37UNSPUNSPUNSPunknUNSPUNSPUNSP
91966-08-09 12:00CSTYesRDBUSGS43.126.72 FairClearNONE1Imported Channel 1WADEunspeunkno43.148.066.00.65UNSPUNSPUNSPunknUNSPUNSPUNSP
81964-10-26 15:20CSTYesDERUSGS59.8-26.55 GoodClearNONE1Imported Channel 1WADEunspeunkno59.832.043.11.36UNSPUNSPUNSPunknUNSPUNSPUNSP
71963-10-31 10:00CSTYesFELUSGS2.2528.15 FairClearNONE1Imported Channel 1WADEunspeunkno2.2513.07.570.30UNSPUNSPUNSPunknUNSPUNSPUNSP
61961-10-24 17:15CSTYesCWSUSGS14026.060.000.50GoodClearNONE1Imported Channel 1CRANunspeunkno14058.01211.16UNSPUNSPUNSPunknUNSPUNSPUNSP
51960-09-13 11:45CSTYesSJMUSGS10.128.36 FairClearNONE1Imported Channel 1WADEunspeunkno10.121.09.701.04UNSPUNSPUNSPunknUNSPUNSPUNSP
41960-09-12 14:00CSTYesRHTUSGS11.728.30 UnspecifiedClearNONE1Imported Channel 1CRANunspeunkno11.725.011.61.01UNSPUNSPUNSPunknUNSPUNSPUNSP
31959-10-21 -- ----YesDERUSGS38.8 ExcellentClearNONE1Imported Channel 1WADEunspeunkno38.826.055.90.69UNSPUNSPUNSPunknUNSPUNSPUNSP
101958-10-14 14:00CSTYesFELUSGS8.4026.75 UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno8.4018.015.20.55UNSPUNSPUNSPunknUNSPUNSPUNSP
11957-09-26 10:10CSTYesAECUSGS0.8326.800.000.30FairClearNONE1Imported Channel 1WADEunspeunkno0.838.001.230.67UNSPUNSPUNSPunknUNSPUNSPUNSP