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CHOWCHILLA RIVER - BUCHANAN RESERVOIR (BHNC1)

Latitude: 37.21º N	Longitude: 119.97º W	Elevation: 450 Feet
Location: Madera County in California		Bulletin Group: San Joaquin		River Group: San Joaquin

Issuance Time:

Jun 30, 2025 at 1:15 PM PDT

Please Note:

Flow data on this product are unregulated / full natural flow.

Historical Flows

Water Year Seasonal (Apr-Jul)

Year		Annual Flow	3-Year Mean
1976	189302400000	6.9
1977	220924800000	1.9
1978	252460800000	195.4	68.1
1979	283996800000	90.0	95.8
1980	315532800000	108.2	131.2
1981	347155200000	21.0	73.1
1982	378691200000	181.4	103.5
1983	410227200000	341.2	181.2
1984	441763200000	69.8	197.5
1985	473385600000	21.9	144.3
1986	504921600000	128.4	73.3
1987	536457600000	9.5	53.3
1988	567993600000	6.6	48.2
1989	599616000000	10.1	8.8
1990	631152000000	5.7	7.5
1991	662688000000	22.1	12.7
1992	694224000000	21.9	16.6
1993	725846400000	105.3	49.7
1994	757382400000	11.8	46.3
1995	788918400000	160.1	92.4
1996	820454400000	77.7	83.2
1997	852076800000	234.7	157.5
1998	883612800000	197.3	169.9
1999	915148800000	38.1	156.7
2000	946684800000	82.1	105.8
2001	978307200000	23.3	47.8
2002	1009843200000	21.0	42.1
2003	1041379200000	23.5	22.6
2004	1072915200000	17.0	20.5
2005	1104537600000	142.3	60.9
2006	1136073600000	137.8	99.0
2007	1167609600000	9.0	96.4
2008	1199145600000	23.2	56.7
2009	1230768000000	21.1	17.8
2010	1262304000000	56.5	33.6
2011	1293840000000	173.9	83.8
2012	1325376000000	20.6	83.7
2013	1356998400000	19.2	71.2
2014	1388534400000	1.2	13.7
2015	1420070400000	0.8	7.1
2016	1451606400000	48.6	16.9
2017	1483228800000	291.8	113.8
2018	1514764800000	42.1	127.5
2019	1546300800000	128.6	154.2
2020	1577836800000	13.4	61.4
2021	1609459200000	4.7	48.9
2022	1640995200000	5.0	7.7
2023	1672531200000	299.7	103.1
2024	1704067200000	49.5	118.1
2025	1735689600000	31.4	126.8

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ317)

Today: Sunny. Highs in the mid 90s. South winds up to 5 mph shifting to the west in the afternoon.

Tonight: Clear. Lows in the upper 60s. Northwest winds up to 10 mph.

Wednesday: Sunny. Highs in the mid 90s. Southwest winds up to 10 mph.

Wednesday Night: Mostly clear. Lows in the upper 60s. Northwest winds 5 to 10 mph shifting to the north after midnight.

Thursday: Sunny. Highs in the mid 90s. Southwest winds up to 10 mph.

Thursday Night: Mostly clear. Lows in the lower 60s.

Independence Day through Monday: Clear. Highs in the lower 90s. Lows in the lower 60s.

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