TWIN LAKES RESERVOIR, CO

Total of Precipitation (Inches)

(058501)

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
1949	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.48	l	1.02		1.20		0.02		0.03		2.27	h
1950	0.99		0.56		0.65		1.24		0.38		0.41	a	0.56		0.45		0.83		0.28		0.41		0.74		7.50
1951	1.00		0.17		0.03		0.80		0.56		0.67		0.49		1.68		0.60		0.66		0.32		4.87		11.85
1952	1.01		0.07		0.93		0.99		0.61		0.51		3.46		3.09		0.75		0.00		0.61		0.23		12.26
1953	0.05		0.90		0.90		0.80		2.01		0.44		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	5.10	f
1954	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	1.00	u	0.49		0.49	k
1955	0.31		2.07		0.91		0.21		1.13		0.02		3.26		3.37		-----	z	0.20		0.45		0.14		12.07	a
1956	2.22		1.16		0.80		-----	z	0.87		-----	z	-----	z	-----	z	-----	z	0.71		0.37		0.72		6.85	e
1957	1.81		0.19		0.15		1.63		3.34		0.23		1.32		1.63		0.00		0.26		-----	z	0.19		10.75	a
1958	0.05		0.00		0.58		1.34		0.25		-----	z	-----	z	-----	z	-----	z	0.07		0.29		0.07		2.65	d
1959	0.56		0.72		0.21		0.31		0.52		0.46		0.24		0.79		1.62		1.03		0.04		0.00	f	6.50	a
1960	0.41		0.77		0.26		0.13		0.65		1.14		0.82		0.10		0.76		0.89		0.09		0.71		6.73
1961	0.02		0.29		0.80		0.87		0.70		0.17		0.75		1.91		2.43		2.10		0.65		0.37		11.06
1962	1.58		0.77		0.15		1.11		0.40		0.02		0.03		0.40		0.41		0.67		0.21		0.45		6.20
1963	0.59		0.40		0.55		0.14		0.26		1.22		0.71		2.17		0.98		0.92		0.16		0.39		8.49
1964	0.09		-----	z	0.54		0.76		0.53		0.41		0.57		1.61		0.33		0.10		1.38		1.81	b	8.13	a
1965	0.37		0.42		1.65		0.72		0.33		1.27		1.18		1.68		1.08		0.80		0.65		0.56		10.71
1966	0.03		0.42		0.12		0.75		0.61		0.29		1.33		1.00		0.45		0.24		0.62		1.84		7.70
1967	0.24		0.46		0.06		-----	z	1.22		1.68		1.14		2.36		1.04		0.29		0.20		1.09	e	9.78	a
1968	0.06		0.53		0.38		0.36		0.30		0.20		2.85		2.33		0.64		0.36		0.15		0.23		8.39
1969	1.16		0.12		0.03	c	0.20		2.64		2.11		1.62		1.07		1.06		2.27		0.05		0.84		13.17
1970	0.03		0.01		0.83		0.40		0.03		0.84		1.68		2.22		3.02		0.66		0.34		0.32		10.38
1971	0.22		0.72		0.46		0.54		0.30		0.48		1.34		1.67		0.95		0.94		0.39		0.82		8.83
1972	0.43		0.19		0.48		0.44		0.57		0.81		0.41		1.07		0.97		0.35		0.48		0.59		6.79
1973	0.01		0.03		1.10		0.46		0.98		0.69		2.01		1.06		0.26		0.11		0.12		0.58		7.41
1974	0.93		0.04		0.62		0.12		0.01		0.48		1.24		0.83		0.46		1.13		0.27		0.37		6.50
1975	0.37		0.32		1.52		0.27		0.80		0.36	j	0.46		0.96		0.22		0.24		0.70		0.18		6.04	a
1976	0.03		0.39		-----	z	0.93		0.71		0.36		2.21		1.30		2.46		0.02		0.35		0.00		8.76	a
1977	0.00		0.89		0.20		-----	z	-----	z	0.34		2.19		1.29		0.53		0.46		0.42		1.74		8.06	b
1978	0.83		0.26		0.10	a	0.76		1.10		0.45		0.81		0.35		0.22		0.40	b	0.59		0.73		6.60
1979	0.86		0.22		0.84		0.09		1.95		1.75		0.51		1.22		0.41		0.73		0.59	b	0.10		9.27
1980	1.27		0.91		0.59		1.22		1.64		0.03		0.72		0.67		0.81		0.54		0.20		0.13		8.73
1981	0.18		0.10		1.15		0.23		2.04		0.20	a	2.04	c	1.48	a	1.20		0.79	a	0.17		0.90		10.48
1982	0.87	k	0.06		0.51	b	0.37	a	1.23		0.77		1.38		1.55		1.78		0.67		0.19	a	0.12	a	8.63	a
1983	0.13		0.20		0.84	b	0.86	b	1.80	c	1.08		1.67		2.75		0.26		0.40	e	1.25	c	1.21	g	11.24	a
1984	0.10	b	0.31	d	0.75	c	0.68		0.88	e	1.82		2.24		3.27	b	0.69	e	1.99	e	0.34		0.48	d	13.55
1985	0.48	b	0.32		1.23		1.12	b	0.96		0.52		2.11	g	0.18	b	1.86		1.42		0.52		0.38	a	8.99	a
1986	0.14		1.07		0.36	a	0.73		0.23		0.96		2.17	a	2.72	d	1.90	c	0.48		0.82	a	0.46	b	12.04
1987	0.39	c	0.51	b	0.97	d	0.69	a	0.89	d	1.10		1.80	c	1.54	d	0.46	a	0.31	a	0.58	c	0.31	d	9.55
1988	0.24	d	0.21	a	0.37	a	0.57	a	0.63		3.20		0.35		1.48	d	0.93	b	0.30	b	0.77	f	0.56	b	8.84	a
1989	0.40	a	1.23	e	0.43	b	0.61	e	0.81		0.56		2.50	b	0.99	b	1.25	a	0.48		0.47		0.38	c	10.11
1990	0.24	b	0.22		0.53		2.46	c	0.44		0.41		1.41	g	0.96	c	1.11	g	1.15	e	0.39	a	0.28	c	7.08	b
1991	0.08	a	0.17	c	1.09	d	0.60	c	0.13		1.22		2.08	c	1.47	d	0.35	c	0.71	b	0.52	e	0.20		8.62
1992	0.03		0.19	c	0.73	b	0.39	a	0.99		1.11		2.05	b	2.46	e	0.26	c	0.65		1.02		0.28		10.16
1993	0.27		0.88		1.13	c	0.42		0.42		0.45		0.79		1.32		1.19	d	0.50		0.69		0.10	b	8.16
1994	0.18		0.67		0.40		1.21	c	1.40	d	0.31		0.09		1.90		1.05		0.75	d	0.77		0.28		9.01
1995	0.23	d	1.68	a	2.21	c	1.54	c	2.99	d	0.71	a	0.97		2.32		0.85	a	0.75	a	0.72	c	0.37		15.34
1996	1.65	b	1.91	e	0.75	e	0.95	e	0.83		0.97		0.84	a	1.25	d	0.65		0.79		0.43		0.85	j	11.02	a
1997	0.61		0.44	b	0.39		1.13		1.51		0.73		0.59	b	1.51	d	0.75	c	0.60	b	0.76		0.09		9.11
1998	0.24		0.41		1.10		1.36		0.06		0.80		3.13		1.16		0.47	a	0.98	d	0.42	b	0.08		10.21
1999	0.69	c	0.21		0.38		1.99	c	1.41	b	1.06		1.12	e	2.01	c	1.39	c	0.57		0.17	b	0.25	b	11.25
2000	0.96	b	0.57	e	1.03	e	0.42		0.77		1.07	a	2.80		1.96	i	1.36		0.53		0.20		0.57		10.28	a
2001	0.00		0.66	d	1.34		1.06	f	1.15	b	0.45		2.69		2.11	c	0.23	f	0.12		0.26		0.22	b	9.00	b
2002	0.10		0.28	c	0.61		0.11		0.39		0.29		1.23	i	0.76	g	1.23	g	0.70		0.94	b	0.06		3.48	c
2003	0.06		0.42		1.48	b	0.51		0.43	b	1.67		1.41	b	2.19	g	1.92	b	0.18	b	0.88		0.10	e	9.06	a
2004	0.25	c	0.48		0.28		0.83		0.24		0.96		2.55	n	0.96	d	0.94	g	0.72	b	0.27	e	0.12		5.11	b
2005	0.93	d	0.15		0.07	f	0.00	h	0.41	b	1.36		1.20	d	1.67	h	1.43	f	3.67		0.03	q	0.52		8.24	e
2006	0.31	n	0.04		0.34		0.18		0.76		0.41		3.05		2.72		-----	z	0.90		0.70		0.28		9.38	b
2007	0.48		0.28	m	0.52		1.12		0.72		0.62		0.82		1.84		1.03		0.80		0.03		1.55		9.53	a
2008	1.01	b	1.22		1.01	c	1.06	c	0.64		0.16		1.06		1.23		0.56		0.43		0.18		1.12		9.68
2009	0.34		0.40		0.34		0.45		1.54		1.42		1.03		0.61		1.45		0.85	b	0.23		0.61	b	9.27
2010	0.07		0.65		0.74		0.41		0.57		1.15		1.05		2.24		0.40		0.81	i	0.31		0.51	b	8.10	a
2011	0.05	m	0.28	h	0.33	g	0.55	j	0.83	b	0.58		1.68		1.95	e	0.73	s	-----	z	-----	z	-----	z	5.04	h
2012	0.08	y	0.45	l	0.03	s	0.16	d	0.90		0.05	p	1.66	i	2.31	e	0.79	n	0.08	k	0.04	c	0.18	g	3.41	h
2013	0.26		0.42	d	0.72	k	1.27		1.69		0.28		2.71	d	1.50	e	2.60	h	0.18		0.59	k	0.26		8.57	c
2014	1.80		0.82	b	0.59		0.58		0.97		0.24		2.40	b	1.27	j	1.77	e	0.47	c	1.01	i	0.82	c	10.46	b
2015	0.02	d	0.43	e	0.32	a	1.49		1.64		1.06		1.05	S	0.65	j	0.64		0.58	c	0.24	d	0.86	e	8.33	a
2016	0.18	g	0.63	c	0.48	b	1.49	f	0.73	e	0.73		0.66	b	2.22	d	0.36	S	0.65	e	0.20	c	1.29	h	6.66	c
2017	1.22	i	0.40	c	0.10	S	0.57	d	2.08		0.12		2.59		1.02	c	1.52		1.32	e	1.02	d	0.65	e	11.39	a
2018	0.68	g	0.54	j	0.18	d	1.61	f	0.28		0.39		1.92	c	0.84	g	1.03	b	1.42		0.86	e	0.06		6.14	d
2019	0.55	e	0.70	e	1.90	h	1.79	a	1.01		0.40		0.71		1.05		1.01		1.29		0.50	b	0.78	j	9.01	b
2020	0.26	g	0.44	g	0.93	a	0.91	b	0.76		0.94		1.43		0.20	d	1.20	c	0.40		1.32	h	0.64	S	6.77	d
2021	0.13	c	0.67	c	0.96	e	0.42	S	1.05	b	1.01		2.42	c	0.80	e	0.62		0.51	m	0.15	e	0.21	i	8.23	b
2022	1.12	b	1.28		0.67		0.47		0.67		0.86		4.58	a	3.81		0.95		0.76		0.62		0.78	n	15.79	a
2023	0.28	d	0.58	b	0.77	S	0.86	i	0.84	d	0.89	d	0.20	f	1.79	j	0.63	j	1.49	l	0.24	i	0.43		3.02	g
2024	0.85	e	0.93	g	0.86	n	0.25	s	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.85	k
Period of Record Statistics
MEAN	0.50		0.53		0.66		0.75		0.92		0.76		1.52		1.57		0.96		0.72		0.45		0.56		9.56
S.D.	0.52		0.44		0.43		0.50		0.67		0.56		0.95		0.82		0.61		0.59		0.30		0.69		2.17
SKEW	1.35		1.48		0.94		1.02		1.44		1.58		0.77		0.49		1.13		2.41		0.87		4.15		0.58
MAX	2.22		2.07		2.21		2.46		3.34		3.20		4.58		3.81		3.02		3.67		1.38		4.87		15.34
MIN	0.00		0.00		0.03		0.09		0.01		0.02		0.03		0.10		0.00		0.00		0.02		0.00		6.20
YRS	66		67		66		64		72		69		64		62		60		68		65		64		34