California Department of Water Resources
Division of Flood Management

Snow Course Measurements for January 2002

January measurements received as of Friday, February 1, 08:54 AM

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	 37.6	 12.3	33%	 23.4	 53%	
359 Grizzly Ridge             6,900	28-DEC	 49.2	 14.2	29%	 30.4	 47%	
280 Rowland Creek             6,700	27-DEC	 31.7	  8.3	26%	 17.4	 48%	
360 Mount Hough               6,700	26-DEC	 52.1	 15.3	29%	 30.7	 50%	
 75 Church Meadows            6,700	24-DEC	 64.7	 16.3	25%	 30.7	 53%	
353 Frenchman Cove            5,800	27-DEC	 17.1	  4.9	29%			
354 Antelope Ridge            5,650	31-DEC	 13.2	  4.0	30%			
355 Abbey                     5,650	28-DEC	 22.7	  6.5	29%	  9.0	 72%	
                                                Basin Average Pct. of April 1:  54%
                                                                     January 1: 145%
                              Yuba River Basin
 65 Castle Creek 5            7,400	30-DEC	 80.4	 26.0	32%	 52.1	 50%	
 67 Red Mountain              7,200	07-JAN	 83.2	 33.0	40%	 51.9	 64%	
 66 Meadow Lake               7,200	07-JAN	 90.6	 36.8	41%	 55.8	 66%	
 77 Lake Fordyce              6,500	07-JAN	 61.0	 25.8	42%	 40.9	 63%	
 80 Cisco                     5,900	07-JAN	 47.2	 19.2	41%	 27.6	 70%	
391 Lexington                 5,600	02-JAN	 58.7	 24.9	42%	 30.7	 81%	
 85 Lake Spaulding            5,200	07-JAN	 37.6	 15.6	41%	 21.3	 73%	
                                                Basin Average Pct. of April 1:  67%
                                                                     January 1: 180%
                              American River Basin
106 Upper Carson Pass         8,500	02-JAN	 67.0	 22.0	33%	 36.2	 61%	
331 Lower Carson Pass         8,400	02-JAN	 70.4	 23.2	33%	 39.2	 59%	
107 Caples Lake (DWR)         8,000	02-JAN	 58.5	 18.9	32%	 30.8	 61%	
365 Alpha                     7,600	02-JAN	 57.1	 21.6	38%	 33.8	 64%	
108 Echo Summit               7,450	03-JAN	 54.5	 19.4	36%	 33.8	 57%	
110 Lake Audrain              7,300		Scheduled for measurement by Placerville Ranger District
111 Darrington                7,100	03-JAN	 61.7	 22.7	37%	 29.1	 78%	
113 PHillips                  6,800	03-JAN	 53.6	 20.7	39%	 27.6	 75%	
289 Tamarack Flat             6,550	03-JAN	 53.3	 19.6	37%	 28.4	 69%	
                                                Basin Average Pct. of April 1:  66%
                                                                     January 1: 177%

Summary of Snow Surveys

RegionNo. BasinsNo. CoursesAvg WC% Average
April 1
% Average
January 1
North Coast
Sacramento 3 21 20.1" 63% 169%
San Joaquin Valley
Tulare Lake
North Lahontan
South Lahontan
Statewide Average (weighted) 23% 63%

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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