California Department of Water Resources
Division of Flood Management

Snow Course Measurements for May 2001

May measurements received as of Wednesday, May 2, 06:02 PM

Snow depth and water content are in inches. April 1 averages are based on measurements made during years 1946-1995. 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
                              Scott River Basin
  5 Middle Boulder 1          6,600	01-MAY	 32.8	 16.7	51%	 31.0	 54%	
311 Middle Boulder 3          6,200		Scheduled for measurement by US Bureau of Reclamation
298 Dynamite Meadow           5,700	01-MAY	 21.4	 10.6	50%	 18.0	 59%	
285 Swampy John               5,500	30-APR	  8.2	  3.9	48%	 36.4	 11%	
                                                Basin Average Pct. of April 1:  41%
                                                                     May 1:  55%
                              Trinity River Basin
  9 Deadfall Lakes            7,200		Scheduled for measurement by Mount Shasta Ranger District
 10 Red Rock Mountain         6,700	25-APR	 61.0	 33.0	54%	 42.8	 77%	
 11 Bear Basin                6,500	25-APR	 65.3	 35.0	54%	 37.8	 93%	
 12 Shimmy Lake               6,400	25-APR	 72.5	 41.5	57%	 48.8	 85%	
 16 Highland Lakes            6,030	25-APR	 54.6	 28.8	53%	 33.5	 86%	
 17 Big Flat (Course)         5,100	25-APR	  0.0	  0.0		 14.5	  0%	
                                                Basin Average Pct. of April 1:  68%
                                                                     May 1:  91%
                              Sacramento River Basin
 18 Mount Shasta              7,900		Scheduled for measurement by Mount Shasta Ranger District
 19 Sand Flat                 6,800		Scheduled for measurement by Mount Shasta Ranger District
 22 Slate Creek               5,700	25-APR	 62.8	 35.4	56%	 29.3	121%	
                                                Basin Average Pct. of April 1: 121%
                                                                     May 1: 155%
                              Mc Cloud River Basin
 23 Brewer Creek              6,250		Scheduled for measurement by McCloud Ranger District
 25 Stouts Meadow             5,400		Scheduled for measurement by US Bureau of Reclamation
                              Pit River Basin
 33 Thousand Lakes            6,500	30-APR	 29.3	 12.7	44%	 34.0	 37%	
 35 Adin Mountain             6,200		Scheduled for measurement by Big Valley Ranger District
343 New Manzanita Lake        5,900		Scheduled for measurement by Lassen Volcanic National Park
                                                Basin Average Pct. of April 1:  37%
                                                                     May 1:  48%
                              Stony Cr Basin
 62 Anthony Peak              6,200	30-APR	 41.2	 18.8	46%	 28.6	 66%	
                                                Basin Average Pct. of April 1:  66%
                                                                     May 1:  84%
                              Feather River Basin
361 Kettle Rock               7,300	26-APR	 10.7	  4.5	42%	 23.1	 19%	
 48 Mount Dyer 1              7,100	25-APR	 39.5	 17.7	45%	 25.3	 70%	
359 Grizzly Ridge             6,900	24-APR	 25.1	 12.3	49%	 29.7	 41%	
279 Eureka Bowl               6,800	25-APR	 38.4	 18.7	49%	 42.3	 44%	
 75 Church Meadows            6,700	25-APR	 27.2	 12.3	45%	 32.4	 38%	
280 Rowland Creek             6,700	24-APR	  6.3	  2.4	38%	 17.3	 14%	
360 Mount Hough               6,700	27-APR	 24.7	 10.5	43%	 29.5	 36%	
 53 Three Lakes               6,250	25-APR	 58.3	 30.8	53%	 40.1	 77%	
 51 Harkness Flat             6,200	25-APR	 19.1	  8.2	43%	 28.5	 29%	
 52 Eureka Lake               6,200	25-APR	 24.6	 11.2	46%	 31.8	 35%	
290 Mount Dyer 2              6,050	25-APR	  9.2	  4.3	47%	 16.1	 27%	
 54 Mill Creek Flat           5,900	25-APR	 55.7	 26.4	47%	 38.6	 68%	
353 Frenchman Cove            5,800	25-APR	  0.0	  0.0		  2.3	  0%	
354 Antelope Ridge            5,650	25-APR	  0.0	  0.0		  3.2	  0%	
355 Abbey                     5,650	25-APR	  0.0	  0.0		  8.8	  0%	
 55 Mount Stover              5,600	25-APR	  0.7	  0.3	43%	 16.0	  2%	
 49 Letterbox                 5,600	25-APR	 72.2	 37.7	52%	 48.7	 77%	
 56 Browns Camp               5,400	25-APR	 14.1	  7.3	52%	 23.1	 32%	
 58 Feather River Meadow      5,400	25-APR	 14.7	  6.6	45%	 22.6	 29%	
 59 Warner Creek              5,100	25-APR	  0.0	  0.0		 14.9	  0%	
434 Humbug Summit 2           4,850	25-APR	 11.4	  5.2	46%			
                                                Basin Average Pct. of April 1:  32%
                                                                     May 1:  41%
                              Yuba River Basin
 65 Castle Creek 5            7,400	01-MAY	 43.8	 20.7	47%	 51.6	 40%	
 69 Donner Summit             6,900	27-APR	 23.8	 11.4	48%	 38.4	 30%	
 74 Yuba Pass                 6,700	30-APR	  4.9	  1.9	39%	 29.4	  6%	
 80 Cisco                     5,900	27-APR	 24.0	 11.6	48%	 26.2	 44%	
372 Chapman Creek             5,850	30-APR	 17.1	  6.9	40%	 23.0	 30%	
391 Lexington                 5,600		Scheduled for measurement by Oroville-Wyandotte Irrigation District
277 Gibsonville               5,400		Scheduled for measurement by Oroville-Wyandotte Irrigation District
 85 Lake Spaulding            5,200	27-APR	 24.3	 11.6	48%	 21.8	 53%	
                                                Basin Average Pct. of April 1:  34%
                                                                     May 1:  44%
                              American River Basin
106 Upper Carson Pass         8,500	30-APR	 27.4	 12.6	46%	 35.4	 36%	
331 Lower Carson Pass         8,400	30-APR	 35.2	 15.7	45%	 38.4	 41%	
107 Caples Lake (DWR)         8,000	30-APR	 27.3	  9.0	33%	 30.3	 30%	
365 Alpha                     7,600	25-APR	 37.6	 16.9	45%	 33.4	 51%	
338 Lost Corner Mountain      7,500	27-APR	 39.0	 16.0	41%	 34.8	 46%	
108 Echo Summit               7,450	27-APR	 33.9	 13.7	40%	 35.4	 39%	
110 Lake Audrain              7,300	27-APR	 37.3	 15.6	42%	 35.4	 44%	
109 Silver Lake               7,100	30-APR	  2.4	  0.8	34%	 21.4	  4%	
111 Darrington                7,100	25-APR	 19.8	  8.8	44%	 29.9	 29%	
316 Wrights Lake              6,900	27-APR	 34.0	 15.0	44%	 31.8	 47%	
113 PHillips                  6,800	26-APR	 20.1	  8.6	43%	 28.1	 31%	
320 Lyons Creek               6,700	25-APR	 42.9	 17.6	41%	 31.2	 56%	
115 Huysink                   6,600	30-APR	 49.4	 23.7	48%	 44.6	 53%	
289 Tamarack Flat             6,550	25-APR	 35.1	 15.9	45%	 27.1	 59%	
120 Onion Creek               6,100		Scheduled for measurement by Central Sierra Snow Lab
322 Robbs Valley              5,600	30-APR	  0.0	  0.0		 17.4	  0%	
127 Ice House                 5,300	30-APR	  0.0	  0.0		  6.8	  0%	
                                                Basin Average Pct. of April 1:  35%
                                                                     May 1:  45%
                              Mokelumne River Basin
323 Highland Meadow           8,700	26-APR	 71.6	 34.8	49%	 46.7	 75%	
364 Tragedy Creek             8,150	30-APR	 47.3	 22.6	48%	 44.4	 51%	
133 Corral Flat               7,200	30-APR	 50.4	 24.4	48%	 39.5	 62%	
363 Podesta                   7,200	30-APR	 45.6	 23.4	51%	 44.2	 53%	
435 Lumberyard 2              6,500	30-APR	  2.9	  1.3	45%			
136 Hams Station              5,500	30-APR	  0.0	  0.0		  6.3	  0%	*
137 Antelope Springs          4,350	30-APR	  0.0	  0.0		  3.4	  0%	*
                                                Basin Average Pct. of April 1:  60%
                                                                     May 1:  75%
                              Stanislaus River Basin
345 Deadman Creek             9,250		Scheduled for measurement by CA Dept of Water Resources
344 Clark Fork Meadow         8,900		Scheduled for measurement by Pacific Gas and Electric Company, Angels Camp
427 Gianelli Meadow           8,400	01-MAY	 77.9	 38.1	49%	 50.0	 76%	
138 Lower Relief Valley       8,100		Scheduled for measurement by CA Dept of Water Resources
139 Soda Creek Flat           7,800		Scheduled for measurement by Pacific Gas and Electric Company, Angels Camp
384 Stanislaus Meadow         7,750	26-APR	 60.8	 28.0	46%	 45.0	 62%	
140 Eagle Meadow              7,500		Scheduled for measurement by Pacific Gas and Electric Company, Angels Camp
142 Herring Creek             7,300		Scheduled for measurement by Pacific Gas and Electric Company, Angels Camp
143 Relief Dam                7,250		Scheduled for measurement by Pacific Gas and Electric Company, Angels Camp
416 Bloods Creek              7,200	01-MAY	 27.0	 12.3	46%	 32.0	 38%	
373 Hells Kitchen             6,550	01-MAY	  0.0	  0.0		 21.6	  0%	
145 Niagara Flat              6,500		Scheduled for measurement by Pacific Gas and Electric Company, Angels Camp
386 Black Springs             6,500	01-MAY	 14.7	  6.6	45%	 22.1	 30%	
                                                Basin Average Pct. of April 1:  41%
                                                                     May 1:  52%
                              Tuolumne River Basin
157 Dana Meadows              9,800	25-APR	 49.0	 23.0	47%	 30.4	 76%	
159 Bond Pass                 9,300	25-APR	 69.3	 29.2	42%	 45.0	 65%	
368 New Grace Meadow          8,900	29-APR	 69.8	 33.2	48%	 47.9	 69%	
161 Tuolumne Meadows          8,600	25-APR	 26.0	 11.0	42%	 22.4	 49%	
162 Horse Meadow              8,400	25-APR	 65.2	 33.7	52%	 47.0	 72%	
163 Wilmer Lake               8,000	29-APR	 55.4	 26.5	48%	 42.2	 63%	
165 Sachse Springs            7,900	27-APR	 57.7	 25.9	45%	 37.5	 69%	
164 Spotted Fawn              7,800	27-APR	 73.8	 34.7	47%	 45.0	 77%	
166 Huckleberry Lake          7,800	26-APR	 64.0	 27.9	44%	 41.1	 68%	
167 Paradise Meadow           7,650	30-APR	 45.7	 21.6	47%	 39.0	 55%	
348 Kerrick Corral            7,000	28-APR	 32.6	 13.8	42%	 21.4	 64%	
168 Upper Kibbie Ridge        6,700	28-APR	 10.9	  4.4	40%	 18.7	 24%	
173 Lower Kibbie              6,700	28-APR	 26.9	 12.1	45%	 26.2	 46%	
169 Vernon Lake               6,700	30-APR	 15.4	  6.4	42%	 22.8	 28%	
171 Beehive Meadow            6,500	01-MAY	 21.7	 10.3	47%	 24.0	 43%	
172 Bell Meadow               6,500	28-APR	 12.0	  5.4	45%	 16.7	 32%	
                                                Basin Average Pct. of April 1:  56%
                                                                     May 1:  70%
                              Merced River Basin
176 Snow Flat                 8,700	24-APR	 66.0	 34.0	52%	 43.4	 78%	
177 Ostrander Lake            8,200	27-APR	 50.9	 24.3	48%	 33.4	 73%	
178 Tenaya Lake               8,150	24-APR	 47.0	 21.0	45%	 32.4	 65%	
180 Peregoy Meadows           7,000	30-APR	 48.9	 20.9	43%	 30.5	 69%	
179 Gin Flat                  7,000	23-APR	 62.6	 28.7	46%	 31.8	 90%	
                                                Basin Average Pct. of April 1:  75%
                                                                     May 1:  94%
                              San Joaquin River Basin
183 Piute Pass               11,300	28-APR	 58.4	 25.0	43%	 35.8	 70%	
187 Rose Marie               10,000	24-APR	 52.0	 20.6	40%	 28.5	 72%	
190 Kaiser Pass               9,100	24-APR	 63.5	 25.1	40%	 38.5	 65%	
191 Dutch Lake                9,100	24-APR	 42.9	 18.3	43%	 27.2	 67%	
193 Cora Lakes                8,400		Scheduled for measurement by Minarets Ranger District
346 Badger Flat               8,300	24-APR	 41.9	 18.2	43%	 30.0	 61%	
196 Chilkoot Lake             7,450	26-APR	 60.1	 28.4	47%	 36.1	 79%	
197 Chilkoot Meadow           7,150	26-APR	 71.4	 36.0	50%	 35.7	101%	
200 Clover Meadow             7,000	26-APR	 28.2	 13.0	46%	 22.4	 58%	
199 Huntington Lake           7,000	23-APR	 38.2	 15.5	41%	 18.6	 83%	
201 Jackass Meadow            6,950	26-APR	 20.3	 10.7	53%	 23.1	 46%	
202 Chiquito Creek            6,800	26-APR	 28.0	 12.9	46%	 21.2	 61%	
204 Poison Meadow             6,800	26-APR	 55.7	 27.7	50%	 24.0	115%	
                                                Basin Average Pct. of April 1:  73%
                                                                     May 1:  92%
                              Kings River Basin
222 Bishop Pass              11,200		Scheduled for measurement by CA Dept of Water Resources/Snow Surveys
223 Blackcap Basin           10,300		Scheduled for measurement by CA Dept of Water Resources/Snow Surveys
396 Rattlesnake Creek Ba      9,900		Scheduled for measurement by Pacific Gas and Electric Company, Auberry
225 Beard Meadow              9,800		Scheduled for measurement by Pacific Gas and Electric Company, Auberry
224 Upper Burnt Corral        9,700		Scheduled for measurement by CA Dept of Water Resources/Snow Surveys
229 Round Corral              9,000		Scheduled for measurement by Pacific Gas and Electric Company, Auberry
227 Woodchuck Meadow          8,800		Scheduled for measurement by Pacific Gas and Electric Company, Auberry
232 Long Meadow (Kings R)     8,500		Scheduled for measurement by Pacific Gas and Electric Company, Auberry
426 Courtright                8,350		Scheduled for measurement by Pacific Gas and Electric Company, Auberry
234 Post Corral Meadow        8,200		Scheduled for measurement by Pacific Gas and Electric Company, Auberry
308 Dodsons Meadow            8,050		Scheduled for measurement by Pacific Gas and Electric Company, Auberry
239 Fred Meadow               6,950		Scheduled for measurement by Pacific Gas and Electric Company, Auberry
240 Grant Grove               6,600		Scheduled for measurement by Sequoia and Kings Canyon National Parks
                              Kaweah River Basin
292 Farewell Gap              9,500	26-APR	 54.5	 25.4	47%	 34.5	 73%	
243 Panther Meadow            8,600	27-APR	 80.0	 36.0	45%	 36.3	 99%	
244 Hockett Meadows           8,500	26-APR	 35.6	 19.6	55%	 27.4	 72%	
245 Mineral King              8,000	26-APR	 19.6	  7.1	36%	 20.1	 35%	
246 Giant Forest              6,400	26-APR	 28.0	 13.1	47%	 15.4	 85%	
                                                Basin Average Pct. of April 1:  73%
                                                                     May 1:  91%
                              Tule River Basin
247 Quaking Aspen             7,000	30-APR	  1.6	  0.7	44%	 12.8	  5%	
248 Old Enterprise Mill       6,600		Scheduled for measurement by CA Dept of Forestry
                                                Basin Average Pct. of April 1:   5%
                                                                     May 1:   7%
                              Kern River Basin
250 Bighorn Plateau          11,350	27-APR	 33.3	 15.1	45%	 21.9	 69%	
251 Cottonwood Pass          11,050	23-APR	 34.6	 14.3	41%	 13.4	107%	
252 Siberian Pass            10,900	25-APR	 33.3	 14.8	44%	 18.3	 81%	
253 Crabtree Meadow          10,700	26-APR	 23.0	 10.6	46%	 18.8	 56%	
255 Tyndall Creek            10,650	27-APR	 27.7	 12.8	46%	 18.3	 70%	
254 Guyot Flat               10,650	26-APR	 28.0	 12.4	44%	 20.0	 62%	
275 Sandy Meadows            10,650	27-APR	 17.9	  8.2	46%	 18.3	 45%	
257 Big Whitney Meadow        9,750	24-APR	 26.0	 11.0	42%	 16.6	 66%	
256 Rock Creek                9,600	25-APR	 12.5	  5.5	44%	 17.2	 32%	
258 Round Meadow              9,000	27-APR	 32.5	 14.9	46%	 24.9	 60%	
259 Ramshaw Meadows           8,700	24-APR	  9.0	  4.0	44%	 11.3	 35%	
260 Little Whitney Meadow     8,500	24-APR	  4.8	  1.9	40%	 13.5	 14%	
264 Quinn Ranger Station      8,350	26-APR	 17.6	  8.2	47%	 19.4	 42%	
249 Dead Horse Meadow         7,300	30-APR	  2.8	  0.5	18%	 11.3	  4%	
                                                Basin Average Pct. of April 1:  53%
                                                                     May 1:  66%
                              Susan River Basin
 45 Silver Lake Meadows       6,450	25-APR	 18.1	  8.7	48%	 30.2	 29%	
 46 Norvell Flat              5,700	25-APR	  0.0	  0.0		 16.5	  0%	
                                                Basin Average Pct. of April 1:  14%
                                                                     May 1:  18%
                              Walker River Basin
150 Virginia Lakes            9,400	26-APR	 20.3	  9.9	49%	 17.0	 58%	
377 Virginia Lakes Ridge      9,300	26-APR	 35.8	 14.5	41%	 18.9	 77%	
152 Sonora Pass               8,750		Scheduled for measurement by Pacific Gas and Electric Company, Angels Camp
                                                Basin Average Pct. of April 1:  67%
                                                                     May 1:  87%
                              Owens River Basin
284 Bishop Lake              11,300		Scheduled for measurement by CA Dept of Water Resources
212 East Piute Pass          10,800	28-APR	 30.3	 14.4	48%	 13.6	106%	
213 Sawmill                  10,200		Scheduled for measurement by CA Dept of Water Resources/Snow Surveys
221 Cottonwood Lakes 1       10,150		Scheduled for measurement by City of Los Angeles; Dept of Water and Power
214 North Lake                9,300	28-APR	 11.4	  5.7	50%	  9.3	 61%	
205 Mammoth Pass (DWR)        9,300		Scheduled for measurement by City of Los Angeles; Dept of Water and Power
                                                Basin Average Pct. of April 1:  84%
                                                                     May 1: 104%

Summary of Snow Surveys

RegionNo. BasinsNo. CoursesAvg WC% Average
April 1
% Average
May 1
North Coast 2 8 21.2" 58% 77%
Sacramento 5 44 11.7" 36% 46%
San Joaquin Valley 5 42 21.2" 62% 77%
Tulare Lake 3 20 11.8" 56% 70%
North Lahontan 1 2 12.2" 67% 87%
South Lahontan 1 2 10.1" 84% 104%
Statewide Average (weighted) 52% 66%

* 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 every 30 minutes during the data-collection period.

hart@water.ca.gov


Webmaster

Revised: May 02, 2001 06:04