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Snow Course Measurements for May 2009
May measurements received as of Friday, 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 04-MAY 39.4 14.8 38% 32.4 46%
311 Middle Boulder 3 6,200 04-MAY 25.7 10.3 40% 28.3 36%
298 Dynamite Meadow 5,700 04-MAY 0.5 0.2 40% 18.6 1%
285 Swampy John 5,500 01-MAY 28.9 12.2 42% 34.0 36%
Basin Average Pct. of April 1: 30%
May 1: 43%
Trinity River Basin
9 Deadfall Lakes 7,200 Scheduled for measurement by Mount Shasta Ranger District
10 Red Rock Mountain 6,700 29-APR 37.3 19.0 51% 44.1 43%
11 Bear Basin 6,500 29-APR 44.6 23.4 52% 39.1 60%
12 Shimmy Lake 6,400 29-APR 45.6 22.9 50% 50.3 46%
16 Highland Lakes 6,030 29-APR 23.7 11.2 47% 35.2 32%
437 Paradise Peak 5,800 Scheduled for measurement by Hayfork Ranger District
17 Big Flat (Course) 5,100 29-APR 0.0 0.0 13.1 0%
Basin Average Pct. of April 1: 36%
May 1: 52%
Sacramento River Basin
18 Mount Shasta 7,900 02-MAY 94.5 46.0 49% 53.6 86%
19 Sand Flat (Course) 6,800 03-MAY 66.0 31.1 47% 43.6 71%
22 Slate Creek 5,700 29-APR 18.0 7.9 44% 30.1 26%
Basin Average Pct. of April 1: 61%
May 1: 85%
Mc Cloud River Basin
23 Brewer Creek 6,250 05-MAY 49.0 23.0 47% 36.2 64%
25 Stouts Meadow 5,400 Scheduled for measurement by McCloud Ranger District
Basin Average Pct. of April 1: 64%
May 1: 88%
Pit River Basin
33 Thousand Lakes 6,500 Scheduled for measurement by Hat Creek Ranger District
35 Adin Mountain 6,200 30-APR 12.0 4.2 35% 12.5 34%
343 New Manzanita Lake 5,900 01-MAY 0.0 0.0 8.0 0%
Basin Average Pct. of April 1: 17%
May 1: 23%
Cottonwood Cr Basin
436 Bully Choop 6,100 Scheduled for measurement by Hayfork Ranger District
Feather River Basin
47 Lower Lassen Peak 8,250 29-APR 130.4 65.7 50% 80.2 82%
361 Kettle Rock 7,300 29-APR 21.5 7.9 37% 23.4 34%
48 Mount Dyer 1 7,100 28-APR 38.1 18.4 48% 25.9 71%
359 Grizzly Ridge 6,900 28-APR 33.7 14.9 44% 30.4 49%
388 Pilot Peak (DWR) 6,800 29-APR 47.1 22.6 48% 45.5 50%
279 Eureka Bowl 6,800 01-MAY 33.1 14.6 44% 42.7 34%
360 Mount Hough 6,700 Scheduled for measurement by CA Dept of Water Resources, Beckwourth
280 Rowland Creek 6,700 30-APR 3.1 1.1 35% 17.4 6%
75 Church Meadows 6,700 01-MAY 23.9 9.8 41% 30.7 32%
53 Three Lakes 6,250 27-APR 49.4 25.1 51% 40.8 62%
52 Eureka Lake 6,200 01-MAY 12.2 5.0 41% 31.7 16%
51 Harkness Flat 6,200 29-APR 8.3 3.8 46% 28.5 13%
290 Mount Dyer 2 6,050 29-APR 3.8 1.7 45% 16.6 10%
54 Mill Creek Flat 5,900 29-APR 35.4 17.5 49% 39.0 45%
353 Frenchman Cove 5,800 30-APR 0.0 0.0 2.1 0% *
354 Antelope Ridge 5,650 29-APR 0.0 0.0 3.0 0% *
355 Abbey 5,650 28-APR 0.0 0.0 9.0 0%
49 Letterbox 5,600 29-APR 56.2 29.2 52% 49.0 60%
55 Mount Stover 5,600 29-APR 0.0 0.0 14.7 0%
56 Browns Camp 5,400 29-APR 6.1 3.3 54% 23.3 14%
58 Feather River Meadow 5,400 29-APR 4.0 1.9 48% 23.1 8%
59 Warner Creek 5,100 29-APR 0.0 0.0 14.7 0%
434 Humbug Summit 2 4,850 28-APR 2.5 1.2 48% 14.3 8%
Basin Average Pct. of April 1: 30%
May 1: 41%
Yuba River Basin
64 Webber Peak 7,800 29-APR 68.2 30.6 45% 41.9 73%
65 Castle Creek 5 7,400 01-MAY 74.3 35.1 47% 52.1 67%
66 Meadow Lake 7,200 29-APR 87.0 43.0 49% 55.8 77%
67 Red Mountain 7,200 30-APR 75.5 38.4 51% 51.9 74%
68 English Mountain 7,100 29-APR 67.2 33.2 49% 45.4 73%
69 Donner Summit 6,900 30-APR 37.6 17.1 45% 38.6 44%
76 Furnace Flat 6,700 29-APR 67.1 33.7 50% 48.4 70%
74 Yuba Pass 6,700 01-MAY 11.9 6.9 58% 29.6 23%
77 Lake Fordyce 6,500 29-APR 50.1 23.0 46% 40.9 56%
78 Findley Peak 6,500 29-APR 31.0 14.1 45% 29.8 47%
389 Robinson Cow Camp Snow 6,480 29-APR 51.4 23.8 46% 42.5 56%
390 Sunnyside Meadow 6,300 29-APR 76.1 36.4 48% 55.4 66%
80 Cisco 5,900 30-APR 19.6 9.3 47% 27.6 34%
372 Chapman Creek 5,850 01-MAY 17.4 8.7 50% 23.7 37%
83 Bowman Lake 5,650 29-APR 0.0 0.0 22.3 0%
391 Lexington 5,600 30-APR 34.3 17.6 51% 30.7 57%
277 Gibsonville 5,400 30-APR 11.2 4.5 40% 28.7 16%
85 Lake Spaulding 5,200 30-APR 18.3 8.6 47% 21.3 40%
Basin Average Pct. of April 1: 51%
May 1: 70%
American River Basin
106 Upper Carson Pass 8,500 30-APR 42.0 21.6 51% 36.2 60%
331 Lower Carson Pass 8,400 30-APR 49.0 23.0 47% 39.2 59%
107 Caples Lake (DWR) 8,000 30-APR 36.0 15.4 43% 30.8 50%
365 Alpha 7,600 28-APR 35.8 18.6 52% 33.8 55%
338 Lost Corner Mountain 7,500 27-APR 50.2 22.4 45% 36.2 62%
108 Echo Summit 7,450 30-APR 34.2 14.9 44% 33.8 44%
110 Lake Audrain 7,300 30-APR 40.2 18.3 46% 35.3 52%
109 Silver Lake 7,100 29-APR 6.8 3.1 46% 21.0 15%
316 Wrights Lake 6,900 27-APR 41.4 19.0 46% 32.8 58%
113 PHillips 6,800 30-APR 11.1 5.7 51% 27.6 21%
320 Lyons Creek 6,700 28-APR 45.0 21.1 47% 31.8 66%
115 Huysink 6,600 30-APR 61.9 30.3 49% 45.0 67%
289 Tamarack Flat 6,550 30-APR 30.8 13.4 44% 28.4 47%
114 Wabena Meadows 6,300 30-APR 56.2 25.0 44% 42.8 58%
369 Miranda Cabin 6,200 30-APR 44.7 20.3 45% 40.0 51%
120 Onion Creek 6,100 30-APR 12.6 5.8 46% 19.6 30%
371 Diamond Crossing 6,050 30-APR 10.3 4.4 43% 22.0 20%
122 Talbot Camp 5,750 30-APR 0.0 0.0 20.9 0%
322 Robbs Valley 5,600 01-MAY 0.0 0.0 15.6 0%
127 Ice House 5,300 01-MAY 0.0 0.0 5.8 0%
Basin Average Pct. of April 1: 41%
May 1: 57%
Mokelumne River Basin
323 Highland Meadow 8,700 28-APR 84.7 42.3 50% 48.7 87%
364 Tragedy Creek 8,150 29-APR 64.5 32.3 50% 45.0 72%
129 Blue Lakes 8,000 28-APR 58.1 27.3 47% 36.2 75%
131 Wheeler Lake 7,800 28-APR 95.8 50.7 53% 53.3 95%
132 Pacific Valley 7,500 28-APR 56.0 26.8 48% 38.9 69%
363 Podesta 7,200 29-APR 59.8 30.4 51% 44.8 68%
133 Corral Flat 7,200 29-APR 63.9 32.6 51% 40.5 80%
134 Bear Valley Ridge 1 6,700 28-APR 27.4 13.4 49% 24.6 54%
435 Lumberyard 2 6,500 30-APR 2.1 1.0 48% 13.8 7%
136 Hams Station 5,500 29-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: 68%
May 1: 82%
Stanislaus River Basin
345 Deadman Creek 9,250 29-APR 60.4 29.1 48% 35.1 83%
344 Clark Fork Meadow 8,900 29-APR 61.2 29.1 48% 39.8 73%
427 Gianelli Meadow 8,400 24-APR 96.8 46.1 48% 52.9 87%
138 Lower Relief Valley 8,100 29-APR 61.4 30.6 50% 39.6 77%
139 Soda Creek Flat 7,800 29-APR 19.0 7.6 40% 22.0 35%
384 Stanislaus Meadow 7,750 28-APR 65.9 33.4 51% 51.0 65%
140 Eagle Meadow 7,500 29-APR 19.2 9.6 50% 24.2 40%
142 Herring Creek 7,300 28-APR 30.7 14.2 46% 28.0 51%
143 Relief Dam 7,250 29-APR 13.9 6.0 43% 19.9 30%
416 Bloods Creek 7,200 01-MAY 38.3 16.6 43% 34.6 48%
373 Hells Kitchen 6,550 01-MAY 0.0 0.0 21.8 0%
145 Niagara Flat 6,500 28-APR 9.8 4.4 45% 19.6 22%
386 Black Springs 6,500 01-MAY 13.7 6.1 45% 22.0 28%
Basin Average Pct. of April 1: 49%
May 1: 60%
Tuolumne River Basin
157 Dana Meadows 9,800 28-APR 51.0 26.1 51% 31.1 84%
159 Bond Pass 9,300 25-APR 92.6 44.2 48% 44.9 98%
368 New Grace Meadow 8,900 30-APR 87.8 46.6 53% 48.0 97%
161 Tuolumne Meadows 8,600 25-APR 29.5 11.9 40% 22.7 52%
162 Horse Meadow 8,400 25-APR 80.8 42.2 52% 46.7 90%
163 Wilma Lake 8,000 30-APR 71.2 35.0 49% 43.2 81%
165 Sachse Springs 7,900 27-APR 37.0 18.0 49% 38.1 47%
166 Huckleberry Lake 7,800 26-APR 69.9 33.9 48% 41.9 81%
164 Spotted Fawn 7,800 27-APR 72.2 36.1 50% 45.6 79%
167 Paradise Meadow 7,650 29-APR 55.7 26.1 47% 39.9 65%
348 Kerrick Corral 7,000 02-MAY 11.0 5.9 54% 23.5 25%
173 Lower Kibbie 6,700 28-APR 9.8 4.6 47% 26.0 18%
169 Vernon Lake 6,700 28-APR 15.8 7.1 45% 22.4 32%
168 Upper Kibbie Ridge 6,700 28-APR 0.0 0.0 18.6 0%
171 Beehive Meadow 6,500 28-APR 13.5 6.0 44% 23.5 26%
172 Bell Meadow 6,500 02-MAY 0.0 0.0 15.5 0%
Basin Average Pct. of April 1: 55%
May 1: 67%
Merced River Basin
176 Snow Flat 8,700 26-APR 71.4 41.6 58% 44.5 93%
177 Ostrander Lake 8,200 01-MAY 42.0 21.6 51% 32.6 66%
178 Tenaya Lake 8,150 27-APR 42.9 20.1 47% 33.6 60%
180 Peregoy Meadows 7,000 02-MAY 42.0 19.4 46% 29.3 66%
179 Gin Flat (Course) 7,000 26-APR 36.0 19.0 53% 32.0 59%
Basin Average Pct. of April 1: 69%
May 1: 84%
San Joaquin River Basin
183 Piute Pass 11,300 30-APR 73.4 34.4 47% 37.9 91%
276 Pioneer Basin 10,400 28-APR 48.9 21.9 45% 34.0 64%
185 Heart Lake 10,100 28-APR 46.5 20.4 44% 27.9 73%
186 Volcanic Knob 10,050 28-APR 44.0 19.8 45% 30.7 64%
190 Kaiser Pass 9,100 28-APR 47.8 23.3 49% 39.0 60%
191 Dutch Lake 9,100 28-APR 29.8 14.0 47% 28.1 50%
192 Coyote Lake 8,850 28-APR 32.6 14.4 44% 32.2 45%
193 Cora Lakes 8,400 29-APR 47.5 24.0 51% 36.3 66%
194 Nellie Lake 8,000 28-APR 48.8 21.2 43% 35.8 59%
196 Chilkoot Lake 7,450 28-APR 41.4 21.4 52% 36.8 58%
197 Chilkoot Meadow 7,150 28-APR 56.8 31.0 55% 36.6 85%
200 Clover Meadow 7,000 29-APR 15.5 8.3 54% 22.8 36%
201 Jackass Meadow 6,950 29-APR 8.4 4.8 57% 24.0 20%
204 Poison Meadow 6,800 28-APR 27.8 8.6 31% 24.8 35%
202 Chiquito Creek 6,800 29-APR 0.0 0.0 21.7 0%
Basin Average Pct. of April 1: 54%
May 1: 66%
Kings River Basin
223 Blackcap Basin 10,300 29-APR 64.4 30.0 47% 34.1 88%
396 Rattlesnake Creek Ba 9,900 28-APR 54.2 23.2 43% 39.8 58%
225 Beard Meadow 9,800 27-APR 62.0 28.0 45% 33.3 84%
224 Upper Burnt Corral 9,700 27-APR 62.2 28.2 45% 37.8 75%
229 Round Corral 9,000 28-APR 46.0 19.2 42% 35.8 54%
227 Woodchuck Meadow 8,800 27-APR 37.7 15.6 41% 31.5 50%
232 Long Meadow (Kings R) 8,500 27-APR 35.6 14.6 41% 29.3 50%
426 Courtright 8,350 29-APR 40.6 16.4 40% 30.7 53%
233 Statum Meadow 8,300 28-APR 26.0 12.1 47% 32.3 37%
230 Helms Meadow 8,250 29-APR 15.7 6.8 43% 26.7 25%
234 Post Corral Meadow 8,200 27-APR 28.0 10.9 39% 26.3 41%
308 Dodsons Meadow 8,050 27-APR 25.6 10.8 42% 29.6 36%
438 Ridge Trail 7,500 29-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: 50%
May 1: 64%
Kaweah River Basin
292 Farewell Gap 9,500 26-APR 52.0 25.5 49% 35.8 71%
243 Panther Meadow 8,600 25-APR 67.9 28.8 42% 36.7 78%
244 Hockett Meadows 8,500 01-MAY 22.6 12.3 54% 27.5 45%
245 Mineral King 8,000 25-APR 13.6 7.8 57% 20.6 38%
246 Giant Forest 6,400 28-APR 36.0 11.0 31% 14.7 75%
Basin Average Pct. of April 1: 61%
May 1: 79%
Tule River Basin
247 Quaking Aspen 7,000 Scheduled for measurement by Tule River Ranger District
248 Old Enterprise Mill 6,600 28-APR 6.8 3.5 52% 14.3 24%
Basin Average Pct. of April 1: 24%
May 1: 31%
Kern River Basin
250 Bighorn Plateau 11,350 30-APR 41.0 16.5 40% 23.7 70%
251 Cottonwood Pass 11,050 29-APR 14.9 5.7 38% 14.8 39%
252 Siberian Pass 10,900 29-APR 28.0 11.8 42% 20.0 59%
253 Crabtree Meadow 10,700 30-APR 16.8 7.1 42% 19.6 36%
254 Guyot Flat 10,650 30-APR 29.0 12.1 42% 20.8 58%
255 Tyndall Creek 10,650 01-MAY 27.0 12.1 45% 18.8 64%
275 Sandy Meadows 10,650 01-MAY 7.8 3.2 41% 19.2 17%
257 Big Whitney Meadow 9,750 29-APR 16.0 6.0 38% 17.2 35%
256 Rock Creek 9,600 30-APR 8.7 3.8 44% 17.8 21%
258 Round Meadow 9,000 02-MAY 23.8 10.0 42% 24.1 41%
259 Ramshaw Meadows 8,700 27-APR 0.0 0.0 11.5 0%
260 Little Whitney Meadow 8,500 26-APR 0.6 0.2 33% 12.9 2%
264 Quinn Ranger Station 8,350 30-APR 26.5 14.0 53% 18.9 74%
249 Dead Horse Meadow 7,300 Scheduled for measurement by Hot Springs Ranger District
Basin Average Pct. of April 1: 40%
May 1: 51%
Susan River Basin
45 Silver Lake Meadows 6,450 30-APR 21.2 9.4 44% 29.4 32%
46 Norvell Flat 5,700 30-APR 0.0 0.0 15.1 0%
Basin Average Pct. of April 1: 16%
May 1: 19%
Truckee River Basin
89 Webber Lake 7,000 29-APR 46.4 21.2 46% 31.7 67%
Basin Average Pct. of April 1: 67%
May 1: 79%
Walker River Basin
377 Virginia Lakes Ridge 9,300 01-MAY 35.9 14.9 42% 19.5 76%
152 Sonora Pass 8,750 29-APR 31.1 13.9 45% 24.9 56%
Basin Average Pct. of April 1: 66%
May 1: 78%
Owens River Basin
212 East Piute Pass 10,800 30-APR 24.3 10.3 42% 15.2 68%
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 30-APR 0.0 0.0 10.2 0%
Basin Average Pct. of April 1: 34%
May 1: 39%
Summary of Snow Surveys
| Region | No. Basins | No. Courses | Avg WC | % Average April 1 | % Average May 1 |
|---|---|---|---|---|---|
| North Coast | 2 | 9 | 12.7" | 33% | 48% |
| Sacramento | 6 | 66 | 15.5" | 39% | 55% |
| San Joaquin Valley | 5 | 58 | 21.1" | 56% | 69% |
| Tulare Lake | 4 | 32 | 12.7" | 47% | 60% |
| North Lahontan | 3 | 5 | 11.9" | 46% | 54% |
| South Lahontan | 1 | 2 | 5.2" | 34% | 39% |
| Statewide Average (weighted) | 45% | 59% | |||
* 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.