Welcome to California Cooperative Snow Surveys Website
Snow Course Measurements
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 Rizzardo
for more information.
* This course not included in river, basin or Statewide computations.
Snow Course Measurements for May 2013
May measurements received as of Tuesday, May 14, 06:01 AM
Num Name Elev. Date Depth Water Density April 1 Average
Content
Scott River Basin
5 Middle Boulder 1 6,600 02-MAY 7.5 3.9 52% 32.4 12%
311 Middle Boulder 3 6,200 02-MAY 1.3 0.8 62% 28.3 3%
298 Dynamite Meadow 5,700 02-MAY 0.0 0.0 18.6 0%
285 Swampy John 5,500 01-MAY 3.6 1.6 44% 34.0 5%
Basin Average Pct. of April 1: 5%
May 1: 7%
Trinity River Basin
9 Deadfall Lakes 7,200 01-MAY 27.9 11.9 43% 34.2 35%
10 Red Rock Mountain 6,700 27-APR 19.3 8.9 46% 44.1 20%
11 Bear Basin 6,500 27-APR 18.6 8.9 48% 39.1 23%
12 Shimmy Lake 6,400 28-APR 25.8 13.9 54% 50.3 28%
16 Highland Lakes 6,030 Scheduled for measurement by Weaverville Ranger District
17 Big Flat (Course) 5,100 Scheduled for measurement by Weaverville Ranger District
Basin Average Pct. of April 1: 26%
May 1: 38%
Sacramento River Basin
18 Mount Shasta 7,900 03-MAY 70.0 34.0 49% 53.6 63%
19 Sand Flat (Course) 6,800 02-MAY 32.5 16.0 49% 43.6 37%
22 Slate Creek 5,700 Scheduled for measurement by Weaverville Ranger District
Basin Average Pct. of April 1: 50%
May 1: 70%
Mc Cloud River Basin
23 Brewer Creek 6,250 01-MAY 7.3 4.0 55% 36.2 11%
25 Stouts Meadow 5,400 02-MAY 0.0 0.0 37.8 0%
Basin Average Pct. of April 1: 6%
May 1: 8%
Pit River Basin
33 Thousand Lakes 6,500 26-APR 28.1 13.4 48% 34.6 39%
35 Adin Mountain 6,200 29-APR 0.0 0.0 12.5 0%
343 New Manzanita Lake 5,900 Scheduled for measurement by Lassen Volcanic National Park
Basin Average Pct. of April 1: 19%
May 1: 27%
Stony Cr Basin
62 Anthony Peak 6,200 30-APR 1.1 0.5 45% 30.1 2%
Basin Average Pct. of April 1: 2%
May 1: 2%
Feather River Basin
47 Lower Lassen Peak 8,250 29-APR 120.7 60.9 50% 80.2 76%
361 Kettle Rock 7,300 02-MAY 0.0 0.0 23.4 0%
48 Mount Dyer 1 7,100 29-APR 9.2 4.6 50% 25.9 18%
359 Grizzly Ridge 6,900 02-MAY 0.0 0.0 30.4 0%
388 Pilot Peak (DWR) 6,800 24-APR 0.0 0.0 45.5 0%
279 Eureka Bowl 6,800 02-MAY 0.0 0.0 42.7 0%
360 Mount Hough 6,700 02-MAY 0.0 0.0 30.7 0%
75 Church Meadows 6,700 02-MAY 0.0 0.0 30.7 0%
280 Rowland Creek 6,700 02-MAY 0.0 0.0 17.4 0%
53 Three Lakes 6,250 29-APR 0.0 0.0 40.8 0%
52 Eureka Lake 6,200 02-MAY 0.0 0.0 31.7 0%
51 Harkness Flat 6,200 29-APR 0.0 0.0 28.5 0%
290 Mount Dyer 2 6,050 29-APR 0.0 0.0 16.6 0%
54 Mill Creek Flat 5,900 29-APR 0.8 0.5 53% 39.0 1%
353 Frenchman Cove 5,800 02-MAY 0.0 0.0 2.1 0% *
354 Antelope Ridge 5,650 02-MAY 0.0 0.0 3.0 0% *
355 Abbey 5,650 02-MAY 0.0 0.0 9.0 0%
49 Letterbox 5,600 29-APR 6.3 3.6 57% 49.0 7%
55 Mount Stover 5,600 29-APR 0.0 0.0 14.7 0%
56 Browns Camp 5,400 29-APR 0.0 0.0 23.3 0%
58 Feather River Meadow 5,400 29-APR 0.0 0.0 23.1 0%
59 Warner Creek 5,100 29-APR 0.0 0.0 14.7 0%
434 Humbug Summit 2 4,850 29-APR 0.0 0.0 14.3 0%
Basin Average Pct. of April 1: 5%
May 1: 7%
Yuba River Basin
64 Webber Peak 7,800 02-MAY 33.8 17.9 53% 41.9 43%
65 Castle Creek 5 7,400 30-APR 23.7 11.5 49% 52.1 22%
66 Meadow Lake 7,200 24-APR 44.4 22.1 50% 55.8 40%
67 Red Mountain 7,200 25-APR 30.5 15.7 51% 51.9 30%
68 English Mountain 7,100 02-MAY 4.4 2.0 45% 45.4 4%
69 Donner Summit 6,900 24-APR 1.8 0.9 50% 38.6 2%
74 Yuba Pass 6,700 29-APR 0.0 0.0 29.6 0%
76 Furnace Flat 6,700 24-APR 18.7 9.5 51% 48.4 20%
77 Lake Fordyce 6,500 24-APR 0.0 0.0 40.9 0%
78 Findley Peak 6,500 02-MAY 0.0 0.0 29.8 0%
389 Robinson Cow Camp Snow 6,480 20-APR 0.0 0.0 42.5 0%
390 Sunnyside Meadow 6,300 24-APR 21.5 11.6 54% 55.4 21%
80 Cisco 5,900 24-APR 0.0 0.0 27.6 0%
372 Chapman Creek 5,850 29-APR 0.0 0.0 23.7 0%
83 Bowman Lake 5,650 02-MAY 0.0 0.0 22.3 0%
391 Lexington 5,600 24-APR 0.0 0.0 30.7 0%
277 Gibsonville 5,400 24-APR 0.0 0.0 28.7 0%
85 Lake Spaulding 5,200 24-APR 0.0 0.0 21.3 0%
Basin Average Pct. of April 1: 10%
May 1: 14%
American River Basin
106 Upper Carson Pass 8,500 26-APR 13.0 4.8 37% 36.2 13%
331 Lower Carson Pass 8,400 26-APR 20.7 9.1 44% 39.2 23%
107 Caples Lake 8,000 26-APR 6.1 2.7 44% 30.8 9%
365 Alpha 7,600 25-APR 2.6 1.2 46% 33.8 4%
338 Lost Corner Mountain 7,500 25-APR 7.4 3.6 49% 36.2 10%
108 Echo Summit 7,450 02-MAY 0.0 0.0 33.8 0%
110 Lake Audrain 7,300 02-MAY 1.2 0.3 26% 35.3 1%
109 Silver Lake 7,100 30-APR 0.0 0.0 21.0 0%
316 Wrights Lake 6,900 25-APR 1.4 0.7 50% 32.8 2%
113 PHillips 6,800 02-MAY 0.0 0.0 27.6 0%
320 Lyons Creek 6,700 25-APR 7.1 3.3 46% 31.8 10%
115 Huysink 6,600 02-MAY 0.0 0.0 45.0 0%
289 Tamarack Flat 6,550 24-APR 0.0 0.0 28.4 0%
114 Wabena Meadows 6,300 24-APR 8.7 4.6 53% 42.8 11%
369 Miranda Cabin 6,200 24-APR 1.9 1.0 53% 40.0 2%
120 Onion Creek 6,100 01-MAY 0.0 0.0 19.6 0%
371 Diamond Crossing 6,050 24-APR 0.0 0.0 22.0 0%
122 Talbot Camp 5,750 24-APR 0.0 0.0 20.9 0%
322 Robbs Valley 5,600 26-APR 0.0 0.0 15.6 0%
127 Ice House 5,300 26-APR 0.0 0.0 5.8 0%
Basin Average Pct. of April 1: 4%
May 1: 6%
Mokelumne River Basin
323 Highland Meadow 8,700 29-APR 42.7 23.1 54% 48.7 47%
364 Tragedy Creek 8,150 30-APR 26.3 10.6 40% 45.0 24%
129 Blue Lakes 8,000 30-APR 21.1 10.3 49% 36.2 28%
131 Wheeler Lake 7,800 30-APR 49.8 26.9 54% 53.3 50%
132 Pacific Valley 7,500 30-APR 11.6 6.1 53% 38.9 16%
363 Podesta 7,200 30-APR 3.0 1.1 37% 44.8 2%
133 Corral Flat 7,200 30-APR 3.6 1.1 31% 40.5 3%
134 Bear Valley Ridge 1 6,700 30-APR 0.0 0.0 24.6 0%
435 Lumberyard 2 6,500 30-APR 0.0 0.0 13.8 0%
136 Hams Station 5,500 30-APR 0.0 0.0 5.3 0% *
137 Antelope Springs 4,350 30-APR 0.0 0.0 2.9 0% *
Basin Average Pct. of April 1: 19%
May 1: 23%
Stanislaus River Basin
345 Deadman Creek 9,250 29-APR 31.2 16.2 52% 35.1 46%
344 Clark Fork Meadow 8,900 30-APR 33.3 17.7 53% 39.8 44%
427 Gianelli Meadow 8,400 28-APR 48.4 23.7 49% 52.9 45%
138 Lower Relief Valley 8,100 29-APR 22.3 11.4 51% 39.6 29%
139 Soda Creek Flat 7,800 30-APR 0.0 0.0 22.0 0%
384 Stanislaus Meadow 7,750 29-APR 18.9 10.1 53% 51.0 20%
140 Eagle Meadow 7,500 29-APR 0.0 0.0 24.2 0%
142 Herring Creek 7,300 29-APR 0.0 0.0 28.0 0%
143 Relief Dam 7,250 30-APR 0.0 0.0 19.9 0%
416 Bloods Creek 7,200 29-APR 0.0 0.0 34.6 0%
373 Hells Kitchen 6,550 29-APR 0.0 0.0 21.8 0%
145 Niagara Flat 6,500 29-APR 0.0 0.0 19.6 0%
386 Black Springs 6,500 29-APR 0.0 0.0 22.0 0%
Basin Average Pct. of April 1: 14%
May 1: 17%
Tuolumne River Basin
157 Dana Meadows 9,800 27-APR 26.0 12.5 48% 31.1 40%
159 Bond Pass 9,300 24-APR 59.2 28.7 48% 44.9 64%
368 New Grace Meadow 8,900 25-APR 57.7 28.6 50% 48.0 60%
161 Tuolumne Meadows 8,600 27-APR 0.0 0.0 22.7 0%
162 Horse Meadow 8,400 24-APR 55.3 27.4 50% 46.7 59%
163 Wilma Lake 8,000 25-APR 46.9 23.8 51% 43.2 55%
165 Sachse Springs 7,900 24-APR 6.5 3.3 51% 38.1 9%
166 Huckleberry Lake 7,800 26-APR 35.8 17.1 48% 41.9 41%
164 Spotted Fawn 7,800 26-APR 38.2 18.7 49% 45.6 41%
167 Paradise Meadow 7,650 24-APR 26.8 12.7 47% 39.9 32%
348 Kerrick Corral 7,000 28-APR 0.0 0.0 23.5 0%
173 Lower Kibbie 6,700 24-APR 0.0 0.0 26.0 0%
168 Upper Kibbie Ridge 6,700 24-APR 0.0 0.0 18.6 0%
169 Vernon Lake 6,700 24-APR 3.1 1.5 48% 22.4 7%
171 Beehive Meadow 6,500 26-APR 0.0 0.0 23.5 0%
172 Bell Meadow 6,500 28-APR 0.0 0.0 15.5 0%
Basin Average Pct. of April 1: 25%
May 1: 31%
Merced River Basin
176 Snow Flat 8,700 24-APR 48.0 24.7 51% 44.5 56%
177 Ostrander Lake 8,200 29-APR 7.3 3.8 52% 32.6 12%
178 Tenaya Lake 8,150 24-APR 22.0 9.1 41% 33.6 27%
180 Peregoy Meadows 7,000 29-APR 3.7 1.8 49% 29.3 6%
179 Gin Flat (Course) 7,000 28-APR 0.0 0.0 32.0 0%
Basin Average Pct. of April 1: 20%
May 1: 24%
San Joaquin River Basin
183 Piute Pass 11,300 29-APR 43.1 18.6 43% 37.9 49%
276 Pioneer Basin 10,400 23-APR 26.8 13.5 50% 34.0 40%
185 Heart Lake 10,100 23-APR 27.9 12.7 46% 27.9 46%
187 Rose Marie 10,000 23-APR 25.3 11.8 47% 29.7 40%
190 Kaiser Pass 9,100 23-APR 30.6 15.3 50% 39.0 39%
191 Dutch Lake 9,100 23-APR 11.8 6.1 52% 28.1 22%
193 Cora Lakes 8,400 Scheduled for measurement by Bass Lake Ranger District
196 Chilkoot Lake 7,450 29-APR 0.0 0.0 36.8 0%
197 Chilkoot Meadow 7,150 29-APR 1.0 0.6 60% 36.6 2%
199 Huntington Lake 7,000 Scheduled for measurement by Southern California Edison Company, Big Creek
200 Clover Meadow 7,000 30-APR 0.0 0.0 22.8 0%
201 Jackass Meadow 6,950 29-APR 0.8 0.2 25% 24.0 1%
204 Poison Meadow 6,800 29-APR 0.0 0.0 24.8 0%
202 Chiquito Creek 6,800 29-APR 0.0 0.0 21.7 0%
Basin Average Pct. of April 1: 20%
May 1: 24%
Kings River Basin
223 Blackcap Basin 10,300 25-APR 36.0 16.4 46% 34.1 48%
396 Rattlesnake Creek Ba 9,900 25-APR 9.1 4.3 47% 39.8 11%
225 Beard Meadow 9,800 25-APR 20.4 9.6 47% 33.3 29%
224 Upper Burnt Corral 9,700 25-APR 32.6 15.8 48% 37.8 42%
229 Round Corral 9,000 29-APR 3.6 1.8 50% 35.8 5%
227 Woodchuck Meadow 8,800 29-APR 1.4 0.6 43% 31.5 2%
232 Long Meadow (Kings R) 8,500 24-APR 1.4 0.6 43% 29.3 2%
426 Courtright 8,350 24-APR 9.2 3.8 41% 30.7 12%
233 Statum Meadow 8,300 29-APR 0.0 0.0 32.3 0%
230 Helms Meadow 8,250 25-APR 1.7 0.7 41% 26.7 3%
234 Post Corral Meadow 8,200 24-APR 1.8 0.8 44% 26.3 3%
308 Dodsons Meadow 8,050 24-APR 0.0 0.0 29.6 0%
438 Ridge Trail 7,500 30-APR 0.0 0.0
239 Fred Meadow 6,950 29-APR 0.0 0.0 21.3 0%
Basin Average Pct. of April 1: 12%
May 1: 15%
Kaweah River Basin
292 Farewell Gap 9,500 30-APR 5.0 2.2 44% 35.8 6%
243 Panther Meadow 8,600 02-MAY 10.4 6.0 58% 36.7 16%
244 Hockett Meadows 8,500 28-APR 0.0 0.0 27.5 0%
245 Mineral King 8,000 30-APR 0.0 0.0 20.6 0%
246 Giant Forest 6,400 29-APR 0.0 0.0 14.7 0%
Basin Average Pct. of April 1: 4%
May 1: 6%
Tule River Basin
247 Quaking Aspen 7,000 30-APR 0.0 0.0 12.3 0%
248 Old Enterprise Mill 6,600 01-MAY 0.0 0.0 14.3 0%
Basin Average Pct. of April 1: 0%
May 1: 0%
Kern River Basin
250 Bighorn Plateau 11,350 01-MAY 3.9 1.7 44% 23.7 7%
251 Cottonwood Pass 11,050 28-APR 0.0 0.0 14.8 0%
252 Siberian Pass 10,900 29-APR 3.5 1.3 37% 20.0 6%
253 Crabtree Meadow 10,700 02-MAY 0.0 0.0 19.6 0%
275 Sandy Meadows 10,650 01-MAY 0.0 0.0 19.2 0%
254 Guyot Flat 10,650 30-APR 0.0 0.0 20.8 0%
255 Tyndall Creek 10,650 01-MAY 0.0 0.0 18.8 0%
257 Big Whitney Meadow 9,750 28-APR 0.0 0.0 17.2 0%
256 Rock Creek 9,600 29-APR 0.0 0.0 17.8 0%
258 Round Meadow 9,000 30-APR 0.0 0.0 24.1 0%
259 Ramshaw Meadows 8,700 28-APR 0.0 0.0 11.5 0%
260 Little Whitney Meadow 8,500 28-APR 0.0 0.0 12.9 0%
264 Quinn Ranger Station 8,350 28-APR 0.0 0.0 18.9 0%
249 Dead Horse Meadow 7,300 30-APR 0.0 0.0 10.7 0%
Basin Average Pct. of April 1: 1%
May 1: 1%
Susan River Basin
45 Silver Lake Meadows 6,450 29-APR 0.0 0.0 29.4 0%
46 Norvell Flat 5,700 29-APR 0.0 0.0 15.1 0%
Basin Average Pct. of April 1: 0%
May 1: 0%
Truckee River Basin
89 Webber Lake 7,000 02-MAY 4.3 2.1 49% 31.7 7%
Basin Average Pct. of April 1: 7%
May 1: 8%
Walker River Basin
377 Virginia Lakes Ridge 9,300 30-APR 15.0 6.6 44% 19.5 34%
152 Sonora Pass 8,750 29-APR 2.7 1.3 47% 24.9 5%
Basin Average Pct. of April 1: 19%
May 1: 23%
Owens River Basin
212 East Piute Pass 10,800 28-APR 1.6 0.6 37% 15.2 4%
221 Cottonwood Lakes 1 10,150 Scheduled for measurement by City of Los Angeles; Dept of Water and Power
205 Mammoth Pass (Ladwp) 9,300 Scheduled for measurement by City of Los Angeles; Dept of Water and Power
214 North Lake 9,300 28-APR 0.0 0.0 10.2 0%
Basin Average Pct. of April 1: 2%
May 1: 2%
Summary of Snow Surveys
| Region | No. Basins | No. Courses | Avg WC | % Average April 1 | % Average May 1 |
|---|---|---|---|---|---|
| North Coast | 2 | 8 | 6.2" | 16% | 22% |
| Sacramento | 6 | 67 | 3.9" | 8% | 11% |
| San Joaquin Valley | 5 | 55 | 8.2" | 20% | 24% |
| Tulare Lake | 3 | 34 | 1.9" | 6% | 7% |
| North Lahontan | 2 | 5 | 2.0" | 9% | 11% |
| South Lahontan | 1 | 2 | 0.3" | 2% | 2% |
| Statewide Average (weighted) | 12% | 15% | |||
* 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 hourly during the data-collection period.
