BOUNDARY DAM, WA

Maximum of Precipitation (Inches)

(450844)

File last updated on April 20, 2024
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.

YEAR(S)	JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC		ANN
1965	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.58		0.57		0.43		0.16		0.82	e	0.45	b	-----	z
1966	0.58		0.20		0.60		0.33		0.56		0.65		0.55		0.30		0.24		0.33		0.83		1.39		1.39
1967	0.62		0.30	c	1.35		0.70		0.70		1.01		0.16		0.02		0.18		0.53		0.32		0.59		1.35	c
1968	0.89		0.38		0.35		0.26		0.60		0.78		0.49		0.80		0.62		0.72		1.01		0.70		1.01
1969	0.52		0.75		0.43		1.06		0.97		0.69		0.79		0.00		0.76		0.41		0.82		0.48		1.06
1970	0.64		0.73		0.27		0.29		0.41		0.80		0.23		0.13		0.94		0.56		0.37		-----	z	-----	z
1971	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1972	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1973	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1974	-----	z	-----	z	-----	z	0.41		0.54		0.31		0.81		0.17		0.20		0.03		1.00		1.12		-----	z
1975	0.60		0.85		0.36		0.36		0.61		0.76		0.56		1.28		0.37		0.76	b	0.27	e	-----	z	-----	z
1976	0.45		0.60		0.63		0.74		0.46		0.54		1.46		0.51		0.12		0.40		0.53		0.45		1.46
1977	0.59		0.20		0.50		0.19		0.72		0.32		0.72		0.75		1.22		0.32		0.80		0.90		1.22
1978	0.59		0.46		0.49		0.55		1.06		0.59		0.97		0.94		0.49		-----	z	0.60		0.31		-----	z
1979	0.27		1.00		0.45		0.60		0.68		0.68		0.68		0.52		0.71		0.48		0.33		1.00		1.00
1980	0.67		0.50		0.33		1.41		0.55		0.62		0.46		1.58		0.54		0.32		0.64		0.67		1.58
1981	0.61	a	0.75		0.34		0.58		1.03		0.78		0.47		0.34		0.37		0.58		0.57		0.49	a	1.03	b
1982	0.69		0.73		0.51		0.55		0.52		0.80		0.95		0.65		0.62		0.31		0.94		0.98		0.98
1983	0.97	b	0.49		0.65		0.49		0.30		0.55		0.50		1.68		0.42		0.69		1.46		0.62		1.68	b
1984	0.38		0.41		0.71		0.66		0.60		0.81		0.15		0.15		0.56		0.26		1.41		0.95		1.41
1985	0.28		0.38		0.17		0.23		0.50		0.56		0.02		0.38		0.97		0.48		0.32		0.36		0.97
1986	0.50		0.60		0.40		0.40		0.58		0.30		0.52		0.22		1.05		0.32		0.30		0.35		1.05
1987	0.56		0.56		0.75		0.32		1.01		0.80		0.48		0.33		0.32		0.17		0.43		0.77		1.01
1988	0.35		0.28		0.80		0.53		0.59		0.36		0.08		0.08		1.19		0.22		1.35		0.74		1.35
1989	0.54		0.41		0.52		0.58		0.57		0.51		0.32		0.88		0.07		0.61		0.75		0.67		0.88
1990	0.78		0.40		0.28		0.35		0.87		1.14		0.63		0.52		0.07		0.54		0.50		1.00		1.14
1991	0.49		0.50		0.32		0.55		0.60		0.67		1.07		0.47		0.34		0.25		0.81		0.73		1.07
1992	1.16		0.56		0.16		1.25		0.49		1.60		0.80		0.04		0.35		0.52		0.73	a	0.68		1.60	a
1993	0.70		0.19		0.87		0.62		0.45		1.05		0.54		0.48		0.36		0.48		0.41		0.63		1.05
1994	0.68		0.60		0.50		0.34		0.64		0.48		0.22		0.06		0.42		0.40		0.52	a	1.15		1.15	a
1995	0.93		0.62		1.03		0.60		0.43		1.05		0.42		0.25		0.78		0.75		0.62		1.47		1.47
1996	0.41		1.02		0.20		1.45		0.72		0.54		0.30		0.65		0.48		0.68		1.13		1.12		1.45
1997	1.14		0.47		0.83		0.92		0.56		1.01		2.01		0.45		0.86		0.54		0.36		0.47		2.01
1998	0.58		0.57		0.55		0.95		2.02		0.47		0.66		0.43		0.20		0.25		0.97		1.02		2.02
1999	0.56		1.00		0.35		0.47		0.76		1.47		0.55		0.65		0.20		0.67		0.73		0.65	a	1.47	a
2000	0.57		0.44		0.82		0.80		0.44	a	0.67		0.33		0.17		0.25		0.74		0.58		0.24		0.82	a
2001	0.35		0.24		0.45		0.46		0.63		0.79		0.28		0.27		0.38		0.49		0.47		1.18		1.18
2002	0.63		0.45		0.28		0.39		0.70		0.52		1.01		0.34		0.36		0.13		0.63		1.77		1.77
2003	0.92		0.43		0.79		0.74		0.31		0.64		0.03		0.13		0.80		0.51		0.94		0.70		0.94
2004	0.73		0.16		0.36		0.32		0.57		1.40		0.00	k	0.74		0.77		0.54		0.69		0.59	a	1.40	l
2005	0.93		0.02		0.77		0.42		0.73		0.91		0.53		0.35		0.98		0.84		0.68		0.58		0.98
2006	1.40		0.47		0.46		0.77		1.05		1.57		0.45		0.19		0.20		0.50		0.76	b	0.59	a	1.57	c
2007	0.63		0.28		0.65		0.72		1.35		0.87		0.28		0.46		0.32		0.58		0.52		0.96		1.35
2008	0.39		0.35		0.47		0.22		0.61		0.50	b	0.28		0.52		0.56		0.48		0.55		0.82		0.82	b
2009	0.81		0.31		0.40		0.54		0.46	a	0.71		0.56	a	0.20		0.27		0.65		0.58		0.55		0.81	b
2010	0.37		0.38		0.80		0.64		0.36		0.78		0.65		0.35		0.51		0.41		0.65		0.53		0.80
2011	0.56	f	0.31		0.44		0.63		0.43		0.52		0.19		0.16		0.11		0.25		1.30		0.65		1.30	f
2012	0.48		0.59		0.97		0.58		0.92		1.15		0.81		0.03	d	0.23		0.89	b	1.16		0.71		1.16	f
2013	0.26		0.41		0.27	a	0.37		1.99	b	1.92		0.50		0.39		1.51		0.17		0.93		0.70		1.99	c
2014	0.44	a	0.52	b	0.80	a	0.72	a	0.48	a	1.05		0.35	b	0.98		0.83		1.11		0.84		0.70		1.11	h
2015	1.11		0.81	a	1.15		0.18		0.29		1.04		0.78		0.38		0.25		0.58		0.68	c	0.86		1.15	d
2016	0.54	d	0.55		0.58		0.40		0.89		0.24		0.54	d	0.27		0.48		1.82		0.65	a	0.44		1.82	i
2017	0.59		1.10		0.50		0.43		0.49		0.37		0.55	b	0.12		0.33		1.06	a	0.94		1.10		1.10	c
2018	0.96	a	0.41	a	0.47	c	0.56	a	0.67	f	1.15		0.20		0.26		0.26		0.28		0.60		0.98		1.15	l
2019	0.43		0.30		0.50	d	0.24	a	0.60		0.41		0.75	b	0.37	e	0.34		0.45	f	0.47	d	0.40		0.75	v
2020	1.20	a	0.40	a	0.58	a	0.20		0.60		0.35	a	0.60	c	0.42	c	0.54		0.62	a	0.54		0.62	c	1.20	n
2021	1.11	d	0.51	e	0.20	d	0.48		0.15	a	0.60	d	0.05	b	0.83	c	0.66	b	1.80	e	0.93	a	0.41	a	-----	z
2022	0.47		0.80	c	0.54	b	0.33		1.07	a	1.00	b	0.58	a	0.10		0.27		0.25		1.30	a	1.20	a	1.30	k
2023	0.47	b	0.25	b	0.75	b	1.51	b	0.87	b	0.45	a	0.30	a	0.85	c	0.36	d	0.21		0.60		0.95	c	1.51	v
2024	0.66		0.85	f	0.40	a	0.20	m	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
Period of Record Statistics
MEAN	0.65		0.50		0.55		0.57		0.69		0.77		0.54		0.45		0.50		0.53		0.73		0.76		1.25
S.D.	0.26		0.23		0.25		0.31		0.35		0.36		0.35		0.36		0.32		0.34		0.29		0.31		0.34
SKEW	0.88		0.66		0.89		1.40		2.08		1.06		1.59		1.46		1.06		1.96		0.71		0.87		0.73
MAX	1.40		1.10		1.35		1.51		2.02		1.92		2.01		1.68		1.51		1.82		1.46		1.77		2.02
MIN	0.26		0.02		0.16		0.18		0.15		0.24		0.02		0.00		0.07		0.03		0.27		0.24		0.80
YRS	54		54		55		55		54		55		55		56		56		54		56		54		40