Snow Course Measurements for January 2005

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     28-DEC   19.1     5.6   29%      23.4    24%    
359 Grizzly Ridge             6,900     29-DEC   33.2     8.2   25%      30.4    27%    
 75 Church Meadows            6,700     27-DEC   23.0     6.6   29%      30.7    21%    
360 Mount Hough               6,700     27-DEC   24.8     8.5   34%      30.7    28%    
280 Rowland Creek             6,700     30-DEC   39.6     6.5   16%      17.4    37%    
353 Frenchman Cove            5,800     28-DEC   21.9     2.3   11%       2.1   110%    *
354 Antelope Ridge            5,650     28-DEC    6.1     1.3   21%       3.0    43%    *
355 Abbey                     5,650     29-DEC   16.8     2.9   17%       9.0    32%    
                                                Basin Average Pct. of April 1:  28%
                                                                     January 1:  76%
                              Yuba River Basin
 65 Castle Creek 5            7,400             Scheduled for measurement by Central Sierra Snow Lab
                              American River Basin
107 Caples Lake (DWR)         8,000     04-JAN   66.4    16.7   25%      30.8    54%    
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
113 PHillips                  6,800     29-DEC   39.0    10.9   28%      27.6    39%    
320 Lyons Creek               6,700             Scheduled for measurement by CA Dept of Water Resources/Snow Surveys
289 Tamarack Flat             6,550     29-DEC   39.0    10.0   26%      28.4    35%    
                                                Basin Average Pct. of April 1:  43%
                                                                     January 1: 116%

Summary of Snow Surveys

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.

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