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Snow Course Measurements for May 2012
May measurements received as of Tuesday, May 15, 06:01 PM
Num Name Elev. Date Depth Water Density April 1 Average
Content
Scott River Basin
5 Middle Boulder 1 6,600 01-MAY 52.7 25.8 49% 32.4 80%
311 Middle Boulder 3 6,200 01-MAY 41.0 18.7 46% 28.3 66%
298 Dynamite Meadow 5,700 01-MAY 31.0 13.0 42% 18.6 70%
285 Swampy John 5,500 03-MAY 36.0 15.8 44% 34.0 46%
Basin Average Pct. of April 1: 66%
May 1: 94%
Trinity River Basin
9 Deadfall Lakes 7,200 02-MAY 47.5 23.1 49% 34.2 68%
10 Red Rock Mountain 6,700 30-APR 75.5 36.6 48% 44.1 83%
11 Bear Basin 6,500 01-MAY 56.9 29.5 52% 39.1 75%
12 Shimmy Lake 6,400 29-APR 80.7 46.0 57% 50.3 91%
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: 79%
May 1: 113%
Sacramento River Basin
18 Mount Shasta 7,900 01-MAY 100.6 48.6 48% 53.6 91%
19 Sand Flat (Course) 6,800 02-MAY 69.5 31.2 45% 43.6 72%
22 Slate Creek 5,700 Scheduled for measurement by Weaverville Ranger District
Basin Average Pct. of April 1: 81%
May 1: 113%
Mc Cloud River Basin
23 Brewer Creek 6,250 03-MAY 39.4 18.2 46% 36.2 50%
25 Stouts Meadow 5,400 01-MAY 42.7 20.7 48% 37.8 55%
Basin Average Pct. of April 1: 53%
May 1: 73%
Pit River Basin
33 Thousand Lakes 6,500 27-APR 47.4 21.8 46% 34.6 63%
35 Adin Mountain 6,200 27-APR 5.0 1.8 36% 12.5 14%
343 New Manzanita Lake 5,900 30-APR 0.0 0.0 8.0 0%
Basin Average Pct. of April 1: 26%
May 1: 36%
Stony Cr Basin
62 Anthony Peak 6,200 30-APR 47.0 20.9 44% 30.1 69%
Basin Average Pct. of April 1: 69%
May 1: 96%
Feather River Basin
47 Lower Lassen Peak 8,250 01-MAY 126.6 64.4 51% 80.2 80%
361 Kettle Rock 7,300 25-APR 15.2 6.1 40% 23.4 26%
48 Mount Dyer 1 7,100 01-MAY 37.4 16.5 44% 25.9 64%
359 Grizzly Ridge 6,900 26-APR 28.0 11.8 42% 30.4 39%
279 Eureka Bowl 6,800 27-APR 44.1 20.1 46% 42.7 47%
388 Pilot Peak (DWR) 6,800 01-MAY 45.0 21.9 49% 45.5 48%
280 Rowland Creek 6,700 24-APR 6.5 2.8 43% 17.4 16%
75 Church Meadows 6,700 26-APR 36.2 14.9 41% 30.7 49%
360 Mount Hough 6,700 25-APR 34.3 13.9 41% 30.7 45%
53 Three Lakes 6,250 01-MAY 45.2 26.3 58% 40.8 64%
52 Eureka Lake 6,200 27-APR 36.2 13.6 38% 31.7 43%
51 Harkness Flat 6,200 30-APR 23.1 11.3 49% 28.5 40%
290 Mount Dyer 2 6,050 02-MAY 1.4 0.6 43% 16.6 4%
54 Mill Creek Flat 5,900 01-MAY 35.4 18.1 51% 39.0 46%
353 Frenchman Cove 5,800 24-APR 0.0 0.0 2.1 0% *
354 Antelope Ridge 5,650 25-APR 0.0 0.0 3.0 0% *
355 Abbey 5,650 26-APR 0.0 0.0 9.0 0%
49 Letterbox 5,600 30-APR 50.3 25.5 51% 49.0 52%
55 Mount Stover 5,600 30-APR 0.0 0.0 14.7 0%
56 Browns Camp 5,400 01-MAY 5.9 3.1 53% 23.3 13%
58 Feather River Meadow 5,400 30-APR 3.1 1.6 52% 23.1 7%
59 Warner Creek 5,100 30-APR 0.0 0.0 14.7 0%
434 Humbug Summit 2 4,850 01-MAY 0.0 0.0 14.3 0%
Basin Average Pct. of April 1: 33%
May 1: 45%
Yuba River Basin
64 Webber Peak 7,800 30-APR 58.2 27.0 46% 41.9 64%
65 Castle Creek 5 7,400 27-APR 64.0 29.5 46% 52.1 57%
66 Meadow Lake 7,200 02-MAY 79.6 36.1 45% 55.8 65%
67 Red Mountain 7,200 25-APR 72.3 32.9 46% 51.9 63%
68 English Mountain 7,100 30-APR 47.4 24.9 53% 45.4 55%
69 Donner Summit 6,900 25-APR 32.7 13.9 43% 38.6 36%
74 Yuba Pass 6,700 27-APR 27.0 11.7 43% 29.6 40%
76 Furnace Flat 6,700 24-APR 58.6 26.5 45% 48.4 55%
78 Findley Peak 6,500 30-APR 31.1 15.0 48% 29.8 50%
77 Lake Fordyce 6,500 24-APR 37.2 16.6 45% 40.9 41%
389 Robinson Cow Camp Snow 6,480 01-MAY 42.6 22.0 52% 42.5 52%
390 Sunnyside Meadow 6,300 01-MAY 75.4 37.3 49% 55.4 67%
80 Cisco 5,900 25-APR 23.8 10.4 44% 27.6 38%
372 Chapman Creek 5,850 27-APR 25.3 12.4 49% 23.7 52%
83 Bowman Lake 5,650 30-APR 8.4 4.4 52% 22.3 20%
391 Lexington 5,600 01-MAY 26.9 14.7 55% 30.7 48%
277 Gibsonville 5,400 01-MAY 13.6 6.6 49% 28.7 23%
85 Lake Spaulding 5,200 25-APR 16.2 7.4 46% 21.3 35%
Basin Average Pct. of April 1: 48%
May 1: 66%
American River Basin
106 Upper Carson Pass 8,500 26-APR 29.9 10.6 35% 36.2 29%
331 Lower Carson Pass 8,400 26-APR 30.4 15.1 50% 39.2 39%
107 Caples Lake (DWR) 8,000 26-APR 14.6 6.7 46% 30.8 22%
365 Alpha 7,600 24-APR 26.5 11.6 44% 33.8 34%
338 Lost Corner Mountain 7,500 01-MAY 28.9 13.4 46% 36.2 37%
108 Echo Summit 7,450 27-APR 19.1 7.8 41% 33.8 23%
110 Lake Audrain 7,300 27-APR 25.7 11.5 45% 35.3 33%
109 Silver Lake 7,100 24-APR 4.8 2.1 44% 21.0 10%
316 Wrights Lake 6,900 24-APR 32.8 15.1 46% 32.8 46%
113 PHillips 6,800 01-MAY 0.0 0.0 27.6 0%
320 Lyons Creek 6,700 24-APR 37.0 15.0 41% 31.8 47%
115 Huysink 6,600 02-MAY 29.0 15.7 54% 45.0 35%
289 Tamarack Flat 6,550 30-APR 18.4 7.9 43% 28.4 28%
114 Wabena Meadows 6,300 24-APR 54.1 23.7 44% 42.8 55%
369 Miranda Cabin 6,200 24-APR 40.4 19.3 48% 40.0 48%
120 Onion Creek 6,100 30-APR 8.9 3.9 44% 19.6 20%
371 Diamond Crossing 6,050 24-APR 8.9 3.3 38% 22.0 15%
122 Talbot Camp 5,750 24-APR 6.2 2.7 44% 20.9 13%
322 Robbs Valley 5,600 30-APR 0.0 0.0 15.6 0%
127 Ice House 5,300 30-APR 0.0 0.0 5.8 0%
Basin Average Pct. of April 1: 27%
May 1: 37%
Mokelumne River Basin
323 Highland Meadow 8,700 30-APR 42.1 21.9 52% 48.7 45%
364 Tragedy Creek 8,150 24-APR 49.7 23.2 47% 45.0 52%
129 Blue Lakes 8,000 30-APR 29.3 13.6 46% 36.2 38%
131 Wheeler Lake 7,800 30-APR 52.9 26.8 51% 53.3 50%
132 Pacific Valley 7,500 30-APR 19.7 9.8 50% 38.9 25%
133 Corral Flat 7,200 24-APR 44.1 21.7 49% 40.5 54%
363 Podesta 7,200 25-APR 45.1 22.1 49% 44.8 49%
134 Bear Valley Ridge 1 6,700 30-APR 4.1 2.3 55% 24.6 9%
435 Lumberyard 2 6,500 24-APR 0.5 0.2 50% 13.8 2%
136 Hams Station 5,500 24-APR 0.0 0.0 5.3 0% *
137 Antelope Springs 4,350 25-APR 0.0 0.0 2.9 0% *
Basin Average Pct. of April 1: 36%
May 1: 44%
Stanislaus River Basin
345 Deadman Creek 9,250 01-MAY 24.1 10.4 43% 35.1 30%
344 Clark Fork Meadow 8,900 01-MAY 26.8 11.2 42% 39.8 28%
427 Gianelli Meadow 8,400 02-MAY 48.2 22.7 47% 52.9 43%
138 Lower Relief Valley 8,100 01-MAY 19.9 8.2 41% 39.6 21%
139 Soda Creek Flat 7,800 01-MAY 0.0 0.0 22.0 0%
384 Stanislaus Meadow 7,750 30-APR 22.0 11.2 51% 51.0 22%
140 Eagle Meadow 7,500 30-APR 0.0 0.0 24.2 0%
142 Herring Creek 7,300 30-APR 2.6 1.5 58% 28.0 5%
143 Relief Dam 7,250 01-MAY 0.0 0.0 19.9 0%
416 Bloods Creek 7,200 27-APR 17.8 7.3 41% 34.6 21%
373 Hells Kitchen 6,550 27-APR 0.0 0.0 21.8 0%
386 Black Springs 6,500 27-APR 6.7 3.4 51% 22.0 15%
145 Niagara Flat 6,500 30-APR 0.0 0.0 19.6 0%
Basin Average Pct. of April 1: 14%
May 1: 17%
Tuolumne River Basin
157 Dana Meadows 9,800 24-APR 26.7 12.0 45% 31.1 39%
159 Bond Pass 9,300 27-APR 40.3 20.3 50% 44.9 45%
368 New Grace Meadow 8,900 01-MAY 39.2 19.4 49% 48.0 40%
161 Tuolumne Meadows 8,600 24-APR 0.2 0.1 50% 22.7 0%
162 Horse Meadow 8,400 27-APR 38.4 18.8 49% 46.7 40%
163 Wilma Lake 8,000 01-MAY 30.2 13.5 45% 43.2 31%
165 Sachse Springs 7,900 27-APR 17.5 7.2 41% 38.1 19%
164 Spotted Fawn 7,800 29-APR 34.9 16.0 46% 45.6 35%
166 Huckleberry Lake 7,800 29-APR 32.1 13.8 43% 41.9 33%
167 Paradise Meadow 7,650 30-APR 15.6 7.0 45% 39.9 18%
348 Kerrick Corral 7,000 24-APR 14.2 6.8 48% 23.5 29%
168 Upper Kibbie Ridge 6,700 29-APR 0.0 0.0 18.6 0%
173 Lower Kibbie 6,700 29-APR 0.0 0.0 26.0 0%
169 Vernon Lake 6,700 29-APR 3.6 1.5 42% 22.4 7%
171 Beehive Meadow 6,500 29-APR 5.2 2.1 40% 23.5 9%
172 Bell Meadow 6,500 24-APR 0.0 0.0 15.5 0%
Basin Average Pct. of April 1: 22%
May 1: 26%
Merced River Basin
176 Snow Flat 8,700 24-APR 38.7 25.0 65% 44.5 56%
177 Ostrander Lake 8,200 01-MAY 14.4 7.0 49% 32.6 22%
178 Tenaya Lake 8,150 25-APR 17.9 9.3 52% 33.6 28%
179 Gin Flat (Course) 7,000 29-APR 13.4 5.6 42% 32.0 18%
180 Peregoy Meadows 7,000 02-MAY 15.7 6.9 44% 29.3 24%
Basin Average Pct. of April 1: 29%
May 1: 36%
San Joaquin River Basin
183 Piute Pass 11,300 27-APR 47.4 20.4 43% 37.9 54%
276 Pioneer Basin 10,400 01-MAY 30.9 12.3 40% 34.0 36%
185 Heart Lake 10,100 01-MAY 26.7 9.2 34% 27.9 33%
187 Rose Marie 10,000 01-MAY 25.4 10.4 41% 29.7 35%
191 Dutch Lake 9,100 01-MAY 14.1 6.7 48% 28.1 24%
190 Kaiser Pass 9,100 01-MAY 33.7 14.1 42% 39.0 36%
193 Cora Lakes 8,400 Scheduled for measurement by Bass Lake Ranger District
196 Chilkoot Lake 7,450 01-MAY 5.2 2.8 54% 36.8 8%
197 Chilkoot Meadow 7,150 Scheduled for measurement by Bass Lake Ranger District
200 Clover Meadow 7,000 02-MAY 0.0 0.0 22.8 0%
199 Huntington Lake 7,000 26-APR 0.0 0.0 18.6 0%
201 Jackass Meadow 6,950 02-MAY 0.0 0.0 24.0 0%
202 Chiquito Creek 6,800 01-MAY 0.0 0.0 21.7 0%
204 Poison Meadow 6,800 01-MAY 6.3 2.6 41% 24.8 10%
Basin Average Pct. of April 1: 20%
May 1: 24%
Kings River Basin
223 Blackcap Basin 10,300 20-APR 27.0 12.6 47% 34.1 37%
396 Rattlesnake Creek Ba 9,900 02-MAY 12.6 5.2 41% 39.8 13%
225 Beard Meadow 9,800 03-MAY 22.6 8.4 37% 33.3 25%
224 Upper Burnt Corral 9,700 03-MAY 30.0 11.0 37% 37.8 29%
229 Round Corral 9,000 02-MAY 17.2 7.2 42% 35.8 20%
227 Woodchuck Meadow 8,800 02-MAY 10.1 3.9 39% 31.5 12%
232 Long Meadow (Kings R) 8,500 03-MAY 0.0 0.0 29.3 0%
426 Courtright 8,350 02-MAY 14.0 5.2 37% 30.7 17%
233 Statum Meadow 8,300 02-MAY 3.1 1.3 42% 32.3 4%
230 Helms Meadow 8,250 03-MAY 2.2 0.8 36% 26.7 3%
234 Post Corral Meadow 8,200 03-MAY 2.2 1.0 45% 26.3 4%
308 Dodsons Meadow 8,050 02-MAY 0.0 0.0 29.6 0%
438 Ridge Trail 7,500 26-APR 0.0 0.0
239 Fred Meadow 6,950 03-MAY 0.0 0.0 21.3 0%
Basin Average Pct. of April 1: 13%
May 1: 16%
Kaweah River Basin
292 Farewell Gap 9,500 28-APR 39.0 16.6 43% 35.8 46%
243 Panther Meadow 8,600 30-APR 37.8 17.4 46% 36.7 47%
244 Hockett Meadows 8,500 27-APR 17.0 10.0 59% 27.5 36%
245 Mineral King 8,000 27-APR 1.4 0.7 47% 20.6 3%
246 Giant Forest 6,400 29-APR 3.0 0.5 17% 14.7 3%
Basin Average Pct. of April 1: 27%
May 1: 35%
Tule River Basin
247 Quaking Aspen 7,000 02-MAY 0.0 0.0 12.3 0%
248 Old Enterprise Mill 6,600 01-MAY 3.6 1.6 44% 14.3 11%
Basin Average Pct. of April 1: 6%
May 1: 7%
Kern River Basin
250 Bighorn Plateau 11,350 28-APR 11.6 3.6 31% 23.7 15%
251 Cottonwood Pass 11,050 23-APR 5.7 2.1 37% 14.8 14%
252 Siberian Pass 10,900 26-APR 12.3 2.1 17% 20.0 11%
253 Crabtree Meadow 10,700 27-APR 4.5 1.4 31% 19.6 7%
275 Sandy Meadows 10,650 28-APR 0.7 0.3 43% 19.2 2%
255 Tyndall Creek 10,650 28-APR 2.5 0.7 28% 18.8 4%
254 Guyot Flat 10,650 27-APR 8.4 2.6 31% 20.8 12%
257 Big Whitney Meadow 9,750 25-APR 0.0 0.0 17.2 0%
256 Rock Creek 9,600 27-APR 0.0 0.0 17.8 0%
258 Round Meadow 9,000 30-APR 3.9 1.6 41% 24.1 7%
259 Ramshaw Meadows 8,700 24-APR 0.0 0.0 11.5 0%
260 Little Whitney Meadow 8,500 24-APR 0.0 0.0 12.9 0%
264 Quinn Ranger Station 8,350 26-APR 0.0 0.0 18.9 0%
249 Dead Horse Meadow 7,300 01-MAY 0.0 0.0 10.7 0%
Basin Average Pct. of April 1: 5%
May 1: 7%
Susan River Basin
45 Silver Lake Meadows 6,450 01-MAY 21.8 11.1 51% 29.4 38%
46 Norvell Flat 5,700 30-APR 0.0 0.0 15.1 0%
Basin Average Pct. of April 1: 19%
May 1: 22%
Truckee River Basin
89 Webber Lake 7,000 30-APR 38.0 19.1 50% 31.7 60%
Basin Average Pct. of April 1: 60%
May 1: 71%
Walker River Basin
377 Virginia Lakes Ridge 9,300 26-APR 11.3 4.3 38% 19.5 22%
152 Sonora Pass 8,750 01-MAY 7.0 3.5 50% 24.9 14%
Basin Average Pct. of April 1: 18%
May 1: 21%
Owens River Basin
220 Cottonwood Lakes 2 11,100 01-MAY 2.0 0.1 4% 14.1 0%
212 East Piute Pass 10,800 27-APR 10.5 3.9 37% 15.2 26%
213 Sawmill 10,200 24-APR 4.2 1.8 43% 19.0 9%
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 27-APR 0.0 0.0 10.2 0%
Basin Average Pct. of April 1: 9%
May 1: 10%
Summary of Snow Surveys
| Region | No. Basins | No. Courses | Avg WC | % Average April 1 | % Average May 1 |
|---|---|---|---|---|---|
| North Coast | 2 | 8 | 26.1" | 72% | 103% |
| Sacramento | 6 | 68 | 14.0" | 36% | 49% |
| San Joaquin Valley | 5 | 55 | 8.9" | 22% | 27% |
| Tulare Lake | 4 | 34 | 3.5" | 11% | 14% |
| North Lahontan | 3 | 5 | 7.6" | 27% | 32% |
| South Lahontan | 1 | 4 | 1.4" | 9% | 10% |
| Statewide Average (weighted) | 30% | 40% | |||
* 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.