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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 06123200 Sadie Cr tributary nr Harlowton MT
Sweet Grass County, Montana
Hydrologic Unit Code 10040201
Latitude  46°11'38.00", Longitude 109°54'01.77" NAD83
Drainage area 0.39  square miles
Gage datum 4,884 feet above NAVD88
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)
332025-11-18 12:30:30MSTYesRTHUSGS0.00 Excellent NONE1MainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
322025-06-03 16:37:30MDTYesRTHUSGS0.00 Excellent NONE1MainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
312025-04-07 12:04:30MDTYesRTHUSGS0.00 Excellent NONE1mainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
302024-10-02 08:33:54MDTYesJTLUSGS0.00 Excellent NONE1mainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
292024-05-22 11:27MDTYesRTH/EEEUSGS0.00 ExcellentDebrisLightNONE1MainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
282024-03-19 10:41:39MDTYesjtl/pmsUSGS0.00 ExcellentDebrisLightNONE1mainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
272023-11-02 08:46:30MDTYesRTH/SMKUSGS0.00 UnknownClearNONE1MainOTHRother 0.00 UNSPunknUNSPUNSPUNSPUNSPATGA0.00
262023-09-14 07:15MDTYesEJBUSGS0.00 Excellent NONE106123200OTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
252023-06-20 13:45:30MDTYesZDJUSGS0.00 Excellent NONE1Main ChannelOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
242023-05-16 07:17MDTYesPMSUSGS0.00 ExcellentDebrisModerateNONE1mainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
232022-11-02 07:06MDTYesPMSUSGS0.00 ExcellentDebrisModerateNONE1mainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
222022-09-06 08:59MDTYesPMSUSGS0.00 ExcellentDebrisModerateNONE1mainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
212022-06-06 17:10MDTYesEEE/JTMUSGS0.00 ExcellentClearNONE1MainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
202022-05-09 11:35MDTYesEEEUSGS0.00 ExcellentClearNONE1MainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
192022-04-05 14:49MDTYesCCC/GCWUSGS0.00 Unknown NONE1MainUNSPother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPUNSP0.00
182021-11-02 07:05MDTYesPMSUSGS0.00 ExcellentDebrisLightNONE1mainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
172021-09-21 12:16MDTYesPMSUSGS0.00 ExcellentClearNONE1mainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
162021-05-17 17:43MDTYesPMSUnspe0.00 0.000.00ExcellentClearNONE1mainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
152021-04-06 12:22MDTYesPMSUnspe0.00 ExcellentClearNONE1mainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
142020-10-07 14:01MDTYesGCWUSGS0.00 ExcellentNoFlowNONE1mainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
132020-07-07 17:16MDTYesMCUSGS0.00 UnspecifiedClearNONE1Main ChannelOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
122020-05-07 13:54:30MDTYesDJEUSGS0.00 UnknownDebrisLightNONE1Mainunknother 0.00 unknunknunknunknunknUNKNunkn
112019-10-15 18:21:30MDTYesDJEUSGS0.00 UnknownDebrisLightNONE1Mainunknother 0.00 unknunknunknunknunknUNKNunkn
102019-10-09 15:40MDTYesSAS TBBUSGS0.00 UnknownDebrisLightNONE1Mainunknother 0.00 unknunknunknunknunknUNKNunkn
92019-09-04 07:53MDTYesDJEUSGS0.00 UnknownClearNONE1Mainunknother 0.00 unknunknunknunknunknUNKNunkn
82019-07-17 12:10MDTYesEEEUSGS0.080.83 PoorDebrisLightNONE1MainOTHRother 0.08 SOFTsiltEVENPULSUNEVSTNDUPST2.00
72019-05-15 15:15MDTYesDJEUSGS0.040.860.00 PoorClearNONE1mainWADEQSCMMVADV0.043.500.910.05FIRMsiltEVENSTDYUNEVUNKNUPST4.00
62019-04-03 15:22MDTYesEEEUSGS0.00 ExcellentDebrisLightNONE1MainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
52018-07-10 17:16:30MDTYesDJEUSGS0.521.230.000.10PoorDebrisLightNONE1mainWADEQSCMMVADV0.523.900.970.53SOFTSANDEVENSTDYUNEVSTNDUPST10.00
42018-05-24 16:02:30MDTYesDJEUSGS2.731.62-0.010.20PoorDebrisLightNONE1mainWADEQSCMMVADV2.734.602.481.10FIRMGRVLEVENPULSEVENSTNDUPST10.00
32011-06-01 14:22:30MDTYesSMKUSGS5.951.950.000.20Poor NONE1Channel 1WADEQSCMMVADV5.954.603.121.91FIRMSANDEVENunknUNEVSTNDUNSP
21991-05-22 08:40MDTYesJLFUSGS0.871.17 FairVegetationLightNONE1Imported Channel 1WADEQSCMMVPYG0.872.600.970.90UNSPUNSPUNSPunknUNSPUNSPUNSP
11981-05-20 10:00MDTYesTIFUSGS1.451.21 PoorClearNONE1Imported Channel 1WADEQSCMMVPYG1.452.801.401.04UNSPUNSPUNSPunknUNSPUNSPUNSP