USGS Surface Water for Montana: Peak Streamflow

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Peak Streamflow for Montana

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Questions or concerns about USGS data and data products in Montana and Wyoming can be directed to the Wyoming-Montana Water Science Center Data Management Section.

Lewis And Clark County, Montana

Hydrologic Unit Code 10030102

Latitude 47°17'27.19", Longitude 112°09'49.56" NAD83

Drainage area 5.63 square miles

Gage datum 4,165 feet above NGVD29

**Output formats**
Table
Graph
Tab-separated file
peakfq (watstore) format
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Water Year	Date	Gage Height (feet)	Stream- flow (cfs)
1974	1974	6.36^Bm	327^Bm
1975	1975-05-07	7.46	428
1976	1976-05-04	4.17	120
1977	1977-06-14	6.03	290
1978	1978-03-17	6.90	380
1979	1979-03-07	7.04¹	100²
1980	1980-05-30	4.99	190
1981	1981-05		5.00^2,Bd
1982	1982-02-13	5.96¹	240²
1983	1983-03-12	3.80	96.0
1984	1984-04-20	2.69	25.0
1985	1985-05-08	5.12	210
1986	1986-02-26	8.66	550
1987	1987-07-18	3.17	54.0
1988	1988		0.00^Bm
1989	1989-03-13	8.71	555
1990	1990-05-30		1.00²
1991	1991-06-20	4.59	10.0²
1992	1992		0.00^Bm
1993	1993-05-05	4.38	142
1994	1994-05-19	4.03	113
1995	1995-05-12	4.65	165
1996	1996-03-10	5.07	202
1997	1997-04-21	6.01	295
1998	1998-06-19	7.96	481
1999	1999		0.10^2,Bm
2000	2000		0.10^2,Bm
2001	2001		1.00^2,Bm
2002	2002-06-10	4.93	190
2003	2003-03-13	9.16	630
2004	2004-04-06	1.49	0.10²
2005	2005		0.10^2,Bm
2006	2006-06-10	3.29	60.0
2007	2007		1.00^2,Bm
2008	2008-06-11	3.60	81.0
2009	2009-04-29	4.22	128
2010	2010-06-16	3.11²	49.0
2011	2011-06-09	5.34	228
2012	2012-04-12		1.00²
2013	2013		1.00^2,Bm
2014	2014-03-10	5.50²	243
2015	2015-05-17	3.56	78.2
2016	2016	2.74^4,Bm	4.22^4,Bm
2017	2017-02-16	4.22	136
2018	2018-03-27	3.74²	92.2
2019	2019-05-27	4.81	182
2020	2020-06-29	4.37	144
2021	2021-05-19	4.31²	139
2022	2022	3.10^4,Bm	43.9^4,Bm
2023	2023-06	3.91^Bd	106^2,Bd

Peak Gage-Height Qualification Codes.

1 -- Gage height affected by backwater
2 -- Gage height not the maximum for the year
4 -- Gage height below minimum recordable elevation
Bd -- Day of occurrence is unknown or not exact
Bm -- Month of occurrence is unknown or not exact

USGS 06073600 Black Rock Creek near Augusta MT