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Peak Streamflow for the Nation

USGS 12335000 Blackfoot River near Helmville MT

Powell County, Montana
Hydrologic Unit Code 17010203
Latitude  46°56'19.39", Longitude 112°56'26.65" NAD83
Drainage area 482  square miles
Gage datum 4,301.29 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)
1941 1941-06-07 2.62 427
1942 1942-05-27 4.70 1,340
1943 1943-06-15 7.33 3,110
1944 1944-06-18 4.19 1,090
1945 1945-06-10 4.64 1,400
1946 1946-05-29 5.20 1,670
1947 1947-05-10 6.95 2,760
1948 1948-06-06 7.55 3,180
1949 1949-05-17 5.32 1,750
1950 1950-06-17 6.45 2,440
1951 1951-05-25 6.75 2,540
1952 1952-05-17 6.70 2,480
1953 1953-06-05 9.10 6,040
1964 1964-06-09 10.74 9,5007
1974 1974-06-16 5.58 1,680
1975 1975-06-20 9.20 7,600
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  Peak Streamflow Qualification Codes.