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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 06120900 Antelope Creek at Harlowton, MT
Wheatland County, Montana
Hydrologic Unit Code 10040201
Latitude  46°26'18.57", Longitude 109°49'21.11" NAD83
Drainage area 90.9  square miles
Gage datum 4,203 feet above NAVD88
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)
162025-11-21 16:27:30MSTYesRTHUSGS0.00 Excellent NONE1MainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
152025-06-04 10:12:29MDTYesRTHUSGS0.741.99 Poor NONE1MainWADEQSCMMunkno0.742.201.190.62FIRMSANDUNEVSTDYEVENNSTDDNST20.00
142025-04-07 09:51:30MDTYesRTHUSGS3.322.29 Poor UNSP1mainOTHRother 2.78 FIRMsiltEVENSTDYEVENSTNDDNST20.00
132024-10-01 16:48:30MDTYesJTL/RTHUSGS1.141.44 Poor NONE1mainOTHRother 1.14 SOFTsiltEVENSTDYEVENSTNDDNST15.00
122024-05-22 10:48MDTYesRTH/EEEUSGS0.351.760.00 PoorDebrisLightNONE1MainOTHRother 0.35 FIRMGRVLEVENSTDYEVENSTNDDNST20.00
112024-03-19 10:10:38MDTYesjtl/pmsUSGS2.60 PoorDebrisLightNONE1mainOTHRother 2.60 FIRMGRVLEVENSTDYEVENSTNDDNST25.00
102023-07-26 10:55:30MDTYesEEE/DJEUSGS0.301.810.000.10Fair NONE1MainOTHRother 0.30 SOFTGRVLEVENSTDYEVENSTNDATGA0.00
92023-07-18 18:16MDTYesPMSUSGS1.70 PoorDebrisHeavyNONE1mainOTHRother 1.70 FIRMSANDEVENSTDYEVENUNFMDNST20.00
82023-05-16 13:13MDTYesPMSUSGS1.892.310.00 PoorClearNONE1mainOTHRother 1.89 FIRMSANDEVENSTDYEVENSTNDATGA0.00
72022-11-01 10:45MDTYesPMSUSGS0.00 ExcellentDebrisHeavyNONE1mainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
62022-08-23 10:28MDTYesDJE/EEEUSGS0.00 ExcellentDebrisModerateNONE1zeroOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
52022-07-26 11:50MDTYesEEEUSGS0.00 ExcellentDebrisLightNONE1MainOTHRother 0.00 UNSPUNSPUNSPUNSPUNSPUNSPATGA0.00
42022-04-25 14:02:30MDTYesDJEUSGS1.412.20 PoorDebrisModerateNONE1mainWADEQSCMMVADV1.414.601.510.93FIRMGRVLEVENSTDYUNEVSTNDDNST100.00
31955-06-26 -- ----YesnnUSGS591 Unspecified NONE1Imported Channel 1UNSPother 591 UNSPUNSPUNSPunknUNSPUNSPUNSP
21954-08-15 -- ----YesnnUSGS1600 Unspecified NONE1Imported Channel 1UNSPother 1600 UNSPUNSPUNSPunknUNSPUNSPUNSP
11950-06-17 -- ----YesnnUSGS24400 Unspecified NONE1Imported Channel 1UNSPother 24400 UNSPUNSPUNSPunknUNSPUNSPUNSP