Snow Course Measurements for January 2007

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     03-JAN   16.5     4.6   28%      23.4    20%    
359 Grizzly Ridge             6,900     29-DEC   26.6     6.3   24%      30.4    21%    
 75 Church Meadows            6,700     28-DEC   29.5     6.8   23%      30.7    22%    
360 Mount Hough               6,700     28-DEC   27.9     6.5   23%      30.7    21%    
280 Rowland Creek             6,700     27-DEC   17.1     3.0   18%      17.4    17%    
353 Frenchman Cove            5,800     27-DEC    3.8     0.6   16%       2.1    29%    *
354 Antelope Ridge            5,650     03-JAN    2.9     0.5   17%       3.0    17%    *
355 Abbey                     5,650     29-DEC    7.7     1.3   17%       9.0    14%    
                                                Basin Average Pct. of April 1:  19%
                                                                     January 1:  52%
                              Yuba River Basin
 65 Castle Creek 5            7,400     29-DEC   42.5    10.2   24%      52.1    20%    
391 Lexington                 5,600     03-JAN   18.6     6.1   33%      30.7    20%    
277 Gibsonville               5,400     03-JAN   21.3     6.1   29%      28.7    21%    
                                                Basin Average Pct. of April 1:  20%
                                                                     January 1:  55%
                              American River Basin
106 Upper Carson Pass         8,500     03-JAN   21.9     5.8   26%      36.2    16%    
331 Lower Carson Pass         8,400     03-JAN   26.3     7.1   27%      39.2    18%    
107 Caples Lake (DWR)         8,000     03-JAN   23.6     5.7   24%      30.8    19%    
365 Alpha                     7,600             Scheduled for measurement by CA Dept of Water Resources/Snow Surveys
108 Echo Summit               7,450     03-JAN   22.5     6.8   30%      33.8    20%    
110 Lake Audrain              7,300     03-JAN   28.3     7.8   28%      35.3    22%    
113 PHillips                  6,800     04-JAN   28.6     8.3   29%      27.6    30%    
320 Lyons Creek               6,700     03-JAN   29.7     8.7   29%      31.8    27%    
289 Tamarack Flat             6,550     03-JAN   25.4     7.2   28%      28.4    25%    
                                                Basin Average Pct. of April 1:  22%
                                                                     January 1:  60%

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 hourly during the data-collection period.