Note: file last modified 72 days ago

Snow Course Measurements California Department of Water Resources
Division of Flood Management


Snow Course Measurements for January 2004

January measurements received as of Thursday, 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.


Num         Name                 Elev.  Date     Depth  Water   Density  April 1 Average
                                                       Content
                              Feather River Basin
361 Kettle Rock               7,300	31-DEC	 50.1	 12.2	24%	 23.4	 52%	
359 Grizzly Ridge             6,900	30-DEC	 59.0	 14.7	25%	 30.4	 48%	
 75 Church Meadows            6,700	26-DEC	 39.9	  9.9	25%	 30.7	 32%	
280 Rowland Creek             6,700	29-DEC	 34.4	  7.0	20%	 17.4	 40%	
360 Mount Hough               6,700	26-DEC	 48.5	 12.2	25%	 30.7	 40%	
353 Frenchman Cove            5,800	29-DEC	 13.9	  2.1	15%			
354 Antelope Ridge            5,650	31-DEC	 17.5	  2.7	15%			
355 Abbey                     5,650	30-DEC	 25.7	  4.7	18%	  9.0	 52%	
                                                Basin Average Pct. of April 1:  44%
                                                                     January 1: 119%
                              Yuba River Basin
 65 Castle Creek 5            7,400	31-DEC	 88.0	 24.0	27%	 52.1	 46%	
391 Lexington                 5,600	30-DEC	 57.6	 18.1	31%	 30.7	 59%	
277 Gibsonville               5,400	30-DEC	 62.0	 17.3	28%	 28.7	 60%	
                                                Basin Average Pct. of April 1:  55%
                                                                     January 1: 149%
                              American River Basin
106 Upper Carson Pass         8,500	05-JAN	 81.4	 21.8	27%	 36.2	 60%	
331 Lower Carson Pass         8,400	05-JAN	 88.5	 23.4	26%	 39.2	 60%	
107 Caples Lake (DWR)         8,000	05-JAN	 78.8	 20.6	26%	 30.8	 67%	
365 Alpha                     7,600		Scheduled for measurement by CA Dept of Water Resources/Snow Surveys
108 Echo Summit               7,450		Scheduled for measurement by Placerville Ranger District
110 Lake Audrain              7,300		Scheduled for measurement by Placerville Ranger District
111 Darrington                7,100		Scheduled for measurement by CA Dept of Water Resources/Snow Surveys
113 PHillips                  6,800	29-DEC	 58.6	 16.0	27%	 27.6	 58%	
320 Lyons Creek               6,700		Scheduled for measurement by CA Dept of Water Resources/Snow Surveys
289 Tamarack Flat             6,550	29-DEC	 58.3	 15.3	26%	 28.4	 54%	
                                                Basin Average Pct. of April 1:  60%
                                                                     January 1: 161%

Summary of Snow Surveys

RegionNo. BasinsNo. CoursesAvg WC% Average
April 1
% Average
January 1
North Coast
Sacramento 3 14 15.5" 52% 141%
San Joaquin Valley
Tulare Lake
North Lahontan
South Lahontan
Statewide Average (weighted) 19% 52%

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 every 30 minutes during the data-collection period.

hart@water.ca.gov


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