Snow Course Measurements for January 2008

January measurements received as of Tuesday, January 15, 06:01 PM

Snow depth and water content are in inches. April 1 averages are based on measurements made during years 1951-2000. Courses are grouped by river basins, listed in north-south and high-low elevation order. Contact Dave Hart for more information.

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Num         Name                 Elev.  Date     Depth  Water   Density  April 1 Average
                                                       Content
                              Feather River Basin
361 Kettle Rock               7,300	26-DEC	 13.7	  2.8	20%	 23.4	 12%	
359 Grizzly Ridge             6,900	28-DEC	 17.8	  3.1	17%	 30.4	 10%	
 75 Church Meadows            6,700	27-DEC	 24.6	  5.6	23%	 30.7	 18%	
280 Rowland Creek             6,700		Scheduled for measurement by CA Dept of Water Resources, Beckwourth
360 Mount Hough               6,700	27-DEC	 20.4	  4.4	22%	 30.7	 14%	
353 Frenchman Cove            5,800	29-DEC	  5.2	  1.1	21%	  2.1	 52%	*
354 Antelope Ridge            5,650	26-DEC	  4.4	  0.7	16%	  3.0	 23%	*
355 Abbey                     5,650	28-DEC	 10.3	  1.5	15%	  9.0	 17%	
                                                Basin Average Pct. of April 1:  14%
                                                                     January 1:  39%
                              Yuba River Basin
 65 Castle Creek 5            7,400		Scheduled for measurement by Central Sierra Snow Lab
                              American River Basin
365 Alpha                     7,600		Scheduled for measurement by CA Dept of Water Resources/Snow Surveys
108 Echo Summit               7,450	03-JAN	 26.0	  7.8	30%	 33.8	 23%	
110 Lake Audrain              7,300	03-JAN	 30.3	  9.7	32%	 35.3	 27%	
113 PHillips                  6,800	03-JAN	 29.2	  7.3	25%	 27.6	 26%	
320 Lyons Creek               6,700		Scheduled for measurement by CA Dept of Water Resources/Snow Surveys
289 Tamarack Flat             6,550	03-JAN	 28.9	  7.1	25%	 28.4	 25%	
                                                Basin Average Pct. of April 1:  26%
                                                                     January 1:  69%

Summary of Snow Surveys

Region	No. Basins	No. Courses	Avg WC	% Average April 1	% Average January 1
North Coast
Sacramento	2	11	4.5"	16%	43%
San Joaquin Valley
Tulare Lake
North Lahontan
South Lahontan
Statewide Average (weighted)				6%	16%

* This course not included in river, basin or Statewide computations.

THIS SUMMARY MAY NOT MATCH THAT PUBLISHED IN BULLETIN 120 DUE TO CHANGES IN AVERAGES AND COURSE SELECTION. USE ONLY FOR COMPARISONS BETWEEN YEARS

Data are preliminary and subject to revision. This document is updated hourly during the data-collection period.

hart@water.ca.gov

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