Salt Lake City Public Utilities
					Hydrology Department
			Get Snow Survey results on the WEB!!!       www.ci.slc.ut.us/utilities/snow_survey.htm
					Snow Survey for April 1st
					by Dan Schenck & Larry Alserda
				Little Cottonwood watershed
Alta Central snow course    19 years of record     elevation 8800'							Snowbird Snotel		elevation 9160'		26 years of record
water content		snow depth	density	percent	date of		water content		snow depth	density	percent	date of
year	(inches)	(inches)	(percent)	of normal	sampling		year	(inches)	(inches)	(percent)	of normal	sampling
2002	37.8	88	43	105%	3-Apr		2002	42.1	116	36	116%	3-Apr
2001	23.4	59	40	65%			2001	22.5	64	35	62%
2000	33.4	94	36	93%			2000	36.6	109	34	101%
1999	26.9	77	35	75%			1999	31.9	90	35	88%
1998	41.9	106	39	116%			1998	37.3	106	35	102%
1997	42.1	103	39	117%			1997	47.3	128	37	130%
1996	42.9	111	39	119%			1996	48.3	129	38	133%
1995	47.2	117	40	131%			1995	53.2	144	37	146%
1994	27.4	69	40	76%			1994	27.9	85	33	77%
1993	42.8	104	40	119%			1993	56.4	143	39	155%
1992	26.1	64	41	73%			1990	31.4	98	32	86%
1991	33.4	96	35	93%			1989	32.8	88	37	90%
1990	31.9	77	41	89%			1988	20	74	27	55%
1989	36.3	88	41	101%			1984	47	112	42	129%
1988	26.3	74	35	73%			1983	50	150	33	137%
1984	54.1	133	41	150%			1977	17.8	64	28	49%
average	36.0						average	36.4
	Little Cottonwood snowpack			110%	of normal
					Parleys Watershed
Parleys Summit snow course    69 years of record     elevation 7700'							Lambs snow course    31 years of record     elevation 7600'
water content		snow depth	density	percent	date of		water content		snow depth	density	percent	date of										Mill D snow course -- Big Cottonwood watershed
year	(inches)	(inches)	(percent)	of normal	sampling		year	(inches)	(inches)	(percent)	of normal	sampling										62	years of record		elevation 7400'
2002	19.3	58	33	104%	28-Mar		2002	16.3	47	34	103%	28-Mar
2001	12.5	40	31	68%			2001	8.9	31	29	56%
2000	18.6	50	33	101%			2000	15	45	33	94%
1999	14.3	41	35	77%			1999	11.9	34	35	75%
1998	21.1	60	35	114%			1998	17.6	52	34	111%
1997	20.9	62	34	113%			1997	18.4	49	38	116%
1996	23.7	68	35	128%			1996	18.9	55	35	119%
1995	20.4	58	34	110%			1995	15.8	46	35	99%										water content		snow depth	density	percent	date of
1994	15.9	45	35	86%			1994	13.1	34	38	82%										year	(inches)	(inches)	(percent)	of normal	sampling
1993	19.7	49	40	106%			1993	14.0	35	42	88%										1996				#VALUE![1]
1992	9.4	30	32	51%			1992	4.4	19	30	28%										1995	18.5	54	34	#VALUE![2]
1991	16.1	52	31	87%			1991	14.7	46	32	92%										1994	15.4	38	41%	#VALUE![3]
1990	13.3	46	32	72%			1990	12.3	34	36	77%										1993	13.7	29	47	#VALUE![4]
1988	13.8	46	30	75%			1989	16.0	42	38	101%										1992	6.1	17	35	#VALUE![5]
1984	26.5	73	36	143%			1988	11.5	37	31	72%										1991	16.1	51	32	#VALUE![6]
1983	21.4	74	29	116%			1984	23.5	62	38	148%										1990	14.5	43	34	#VALUE![7]
1977	13.7	53	25	74%			1983	19.8	62	32	125%										1989	17.0	42	40	#VALUE![8]
1952	32.3	90	36	175%			1977	11.6	42	27	73%										1988	12.6	37	34	#VALUE![9]
average	18.5						average	15.9													1984	24.6	64	39	#VALUE![10]
	Parleys snowpack		103%	of normal																	1977	14.3	44	32	#VALUE![11]
		Millcreek watershed						Emigration watershed													1952	34.4	93	37	#VALUE![12]
Millcreek snow course    30 years of record     elevation 7000'							Killyon snow course    17 years of record     elevation 6300'
water content		snow depth	density	percent	date of		water content		snow depth	density	percent	date of
year	(inches)	(inches)	(percent)	of normal	sampling		year	(inches)	(inches)	(percent)	of normal	sampling
2002	22.8	63	36	112%	28-Mar		2002	10.6	29	36	366%	26-Mar
2001	14	43	33	69%			2001	0.1	0.4	25	3%
2000	19.5	56	35	96%			2000	0.2	1	33	7%
1999	18.2	54	34	89%			1999	0	0	0	0%
1998	24.4	70	35	120%			1998	8	27	30	276%
1997	24.1	68	36	118%			1997	0.5	1	36	17%
1996	21.8	63	35	107%			1996	8.8	19	46	303%
1995	22.8	64	36	112%			1995	1.2	4	29	41%
1994	19.9	51	39	98%			1994	0.6	2	40	21%
1993	20.9	52	41	102%			1993	2.9	7	39	100%
1992	11.0	32	35	54%			1992	0.0	0	0	0%
1991	16.9	54	32	83%			1991	5.9	13	45	203%
1990	15.2	44	35	75%			1990	0.0	0	0	0%
1988	13.2	42	31	65%			1989	3.3	8	44	114%
1984	26.0	74	35	127%			1988	1.9	8	24	66%
1983	24.1	78	31	118%			1987	5.2	13	39	179%
1977	14.1	54	26	69%			1986	0.0	0	0	0%
average	20.4						average	2.9
		Snow Survey report April  first            Page   2
	Big Cottonwood watershed								City Creek watershed
Brighton Cabin Snow course    81 years of record     elevation 8700'								City Creek Lakes snow course    19 years of record     elevation 7550'
water content		snow depth	density	percent	date of			water content		snow depth	density	percent	date of
year	(inches)	(inches)	(percent)	of normal	sampling			year	(inches)	(inches)	(percent)	of normal	sampling
2002	27.2	68	40	100%	2-Apr			2002	29.4	79	37	115%	27-Mar
2001	18.7	55	34	69%				2001	20.4	48	43	80%
2000	23.6	64	37	87%				2000	25.6	65	39	100%
1999	20.6	62	33	76%				1999	20.4	44	46	80%
1998	28	76	37	103%				1998	31.9	77	41	125%
1997	35.2	86	41	129%				1997	31	72	43	122%
1996	34.7	88	40	128%				1996	32.6	81	40	128%
1995	32.3	83	39	119%				1995	29.8	71	42	117%
1994	24.1	65	37	89%				1994	22.2	57	39	87%
1993	33.8	87	39	124%				1993	27.1	60	45	106%
1992	16.1	47	34	59%				1992	11.4	31	37	45%
1988	16.8	54	30	62%				1991	23.7	63	38	93%
1984	32.5	84	39	119%				1990	13.5	34	40	53%
1983	36.2	103	35	133%				1989	27.5	62	44	108%
1977	10.6	44	24	39%				1988	15.4	43	36	60%
1952	43.2	130	31	159%				1984	40.3	97	41.0	158%
average	27.2							average	25.5
Silver Lake Snow Course      68 years of record     elevation 8700'								Louis Meadow snow course     26 years of record    elevation 6700'
water content		snow depth	density	percent	date of			water content		snow depth	density	percent	date of
year	(inches)	(inches)	(percent)	of normal	sampling			year	(inches)	(inches)	(percent)	of normal	sampling
2002	24.3	64	38	93%	2-Apr			2002	22.2	56	40	132%	27-Mar
2001	20.1	55	36	77%				2001	11.4	30	38	68%
2000	22.6	64	35	87%				2000	19.1	47	39	114%
1999	23.6	63	37	90%				1999	12.2	28	44	73%
1998	30.1	73	41	115%				1998	25.8	64	40	154%
1997	34.6	79	44	133%				1997	17.5	43	41	104%
1996	29.6	80	37	113%				1996	22.4	52	43	133%
1995	34.6	83	42	133%				1995	20.4	49	41	121%
1994	21.0	63	34	80%				1994	15.2	37	41	90%
1993	37.1	84	44	142%				1993	19.3	40	46	115%
1992	15.7	44	36	60%				1992	4.6	12	38	27%
1991	21.4	64	33	82%				1991	15.5	41	38	92%
1990	22.8	61	37	87%				1990	4.6	11	41	27%
1988	16.4	48	34	63%				1989	16.3	37	44	97%
1984	28.2	76	37	108%				1988	9.0	23	38	54%
1983	31.0	92	34	119%				1987	13.5	36	38	80%
1977	12.1	44	27	46%				1986	15.5	37	42	92%
1952	38.2	114	34	146%				1985	22.5	50	45	134%
average	26.1							average	16.8
Mill  D snowcourse     68 years of record     elevation 7400'								Hidden Springs snow course    21 years of record     elevation 5500'
water content		snow depth	density	percent	date of			water content		snow depth	density	percent	date of
year	(inches)	(inches)	(percent)	of normal	sampling			year	(inches)	(inches)	(percent)	of normal	sampling
2002	20.1	50	40	104%	2-Apr			2002	6.5	19	35	283%	27-Mar
2001	9.8	27	36	51%				2001	0	0	0	0%
2000	17.4	53	32	90%				2000	0	0	0	0%
1999	14.4	35	41	74%				1999	0	0	0	0%
1998	21.1	55	38	109%				1998	5.5	15	38	239%
1997	21.4	54.9	39	110%				1997	0	0	0	0%
1996	24.6	68	36	127%				1996	1.9	6	32	83%
1995	18.5	54	34	95%				1995	0.4	1	40	17%
1994	15.4	38	41	79%				1994	0.0	0	0	0%
1993	13.7	29	47	71%				1993	1.1	3	37	48%
1990	14.5	43	34	75%				1992	0.0	0	0	0%
1989	17.0	42	40	88%				1991	1.0	3	37	43%
1988	12.6	37	34	65%				1990	0.0	0	0	0%
1984	24.6	64	39	127%				1989	0.0	0	0	0%
1983	24.6	74	33	127%				1988	2.5	7	34	109%
1977	14.3	44	32	74%				1984	12.9	32	40	561%
1952	34.4	93	37	177%				1983	8.1	22	37	352%
average	19.4							average	2.3
	Big Cottonwood snowpack			99%	of normal					City Creek snowpack		126.5%	of normal
	Snowpack percent of normal
	above 7500 feet :		105.1%
	7500 feet and lower :		115.8%	*Hidden Springs and Killyon Snow Courses had excessive % of normal and are not included.
	Total Wasatch Front:		108.3%
Narrative:
March had some impressive gains in the snowpack.  The cold, wet Maritime climate during the first 3 weeks of March helped bring much needed moisture, kept temperatures cool
and most important delayed runoff.   Around March 1st our streams start to bump off their Winter base flows this has been delayed by about 3 weeks.  This will produce better runoff volume
and have less soil moisture loss.  We should see average to slightly above average stream flow volume for 2002. The peak flows should be delayed a week or two.
Dan Schenck - Hydrologist SLC Corp. Public Utilities