Washington SNOTEL Snowpack Update Report
Based on Mountain Data from NRCS SNOTEL Sites
**Provisional data, subject to revision**
Data based on the first reading of the day (typically 00:00) for Wednesday, May 08, 2024
Basin   Site Name Elev (ft) Snow Water Equivalent Percent of Current (in) Today's Median (in) Median Peak (in) Median Peak Date Today's Median Median Peak SPOKANE   Sherwin 3200 0.0    0.0    9.6(29) Mar 06(29) *   0*     Ragged Mountain 4210 2.9    1.6(14) 22.8(14) Apr 01(14) 181*   13*     Humboldt Gulch 4250 0.0    0.0    11.7(29) Mar 16(29) *   0*     Mica Creek 4510 3.9    7.2    23.0(29) Mar 29(29) 54    17      Quartz Peak 4700 0.0    6.9    21.5    Mar 25 0    0      Lookout 5190 9.3    19.0    26.7    Apr 09 49    35      Mosquito Ridge 5260 19.8    27.4(29) 34.2(29) Apr 15(29) 72    58      Sunset 5540 11.0    15.8    23.0    Apr 15 70    48      Lost Lake 6110 39.2    50.4    55.2    Apr 23 78    71    Basin Index (%) 67    LOWER PEND OREILLE   Quartz Peak 4700 0.0    6.9    21.5    Mar 25 0    0      Bunchgrass Mdw 5000 18.5    23.4    29.3    Apr 17 79    63      Hidden Lake 5040 25.5    28.2(20) 36.1(20) Apr 15(20) 90    71      Mosquito Ridge 5260 19.8    27.4(29) 34.2(29) Apr 15(29) 72    58      Schweitzer Basin 6090 36.5    46.3    51.0    Apr 21 79    72    Basin Index (%) 76    UPPER COLUMBIA   Swamp Creek 3930 0.1    0.0(21) 19.0(21) Mar 20(21) *   1*     Gold Mountain 4390 0.0    N/A    N/A    N/A    *   *     Salmon Meadows 4460 0.1    0.0    10.5    Mar 27 *   1*     Muckamuck 4470 0.0    N/A    N/A    N/A    *   *     Sentinel Butte 4680 0.0    0.1(17) 10.7(17) Apr 04(17) 0*   0*     Rainy Pass 4890 17.2    31.6    39.6    Apr 18 54    43      Moses Mtn 5010 0.3    8.3(29) 16.7(29) Apr 09(29) 4    2      Gold Axe Camp 5360 0.1    0.0(10) 11.8(10) Apr 05(10) *   1*     Harts Pass 6490 33.8    41.1    47.9    Apr 27 82    71    Basin Index (%) 64*   CENTRAL COLUMBIA   Trinity 2930 0.7    6.1(10) 33.6(10) Mar 19(10) 11    2      Fish Lake 3430 7.5    17.0    30.4    Mar 28 44    25      Pope Ridge 3590 0.1    0.0    17.3    Mar 17 *   1*     Stevens Pass 3950 18.0    26.6    38.0    Mar 30 68    47      Blewett Pass 4240 0.2    0.0    15.0    Mar 12 *   1*     Upper Wheeler 4330 0.6    0.9    12.9    Mar 30 67*   5*     Park Creek Ridge 4600 9.0    32.7    49.2    Apr 10 28    18      Rainy Pass 4890 17.2    31.6    39.6    Apr 18 54    43      Grouse Camp 5390 0.0    5.0    20.2    Mar 28 0    0      Trough 5480 4.0    0.2    11.6    Mar 30 2000*   34*     Lyman Lake 5980 34.5    60.6    66.0    Apr 29 57    52    Basin Index (%) 51    UPPER YAKIMA   Fish Lake 3430 7.5    17.0    30.4    Mar 28 44    25      Stampede Pass 3850 17.6    29.3    38.2    Apr 11 60    46      Olallie Meadows 4030 38.4    50.0    55.9    Apr 17 77    69      Blewett Pass 4240 0.2    0.0    15.0    Mar 12 *   1*     Sasse Ridge 4340 9.5    21.6    32.0    Apr 07 44    30      Grouse Camp 5390 0.0    5.0    20.2    Mar 28 0    0      Trough 5480 4.0    0.2    11.6    Mar 30 2000*   34*   Basin Index (%) 63    NACHES   White Pass E.S. 4440 15.2    14.2    22.6    Apr 05 107    67      Bumping Ridge 4610 12.5    19.0    28.6    Apr 07 66    44      Sawmill Ridge 4640 11.2    30.0(14) 40.3(14) Apr 11(14) 37    28      Cayuse Pass 5240 35.7    55.8(14) 65.3(14) Apr 19(14) 64    55      Morse Lake 5410 41.5    50.4    57.8    Apr 21 82    72      Corral Pass 5800 24.8    35.5(29) 38.2(29) Apr 25(29) 70    65      Pigtail Peak 5800 43.4    53.3    59.2    Apr 29 81    73      Green Lake 5920 17.5    18.7    25.2    Apr 15 94    69    Basin Index (%) 73    LOWER YAKIMA   Satus Pass 3960 0.0    N/A    N/A    N/A    *   *     Lost Horse 5120 0.0    4.2    19.0    Mar 28 0    0      Indian Rock 5360 0.0    5.4(12) 30.7(11) Mar 30(11) 0    0      Green Lake 5920 17.5    18.7    25.2    Apr 15 94    69    Basin Index (%) 62    KLICKITAT   Satus Pass 3960 0.0    N/A    N/A    N/A    *   *     Potato Hill 4510 26.7    20.6    32.0    Apr 03 130    83      Lost Horse 5120 0.0    4.2    19.0    Mar 28 0    0      Indian Rock 5360 0.0    5.4(12) 30.7(11) Mar 30(11) 0    0      Green Lake 5920 17.5    18.7    25.2    Apr 15 94    69    Basin Index (%) 90    LOWER SNAKE, WALLA WALLA   Sourdough Gulch 4000 0.0    0.0(20) 2.0(20) Jan 22(20) *   0*     Bowman Springs 4530 0.0    0.0    7.4    Mar 04 *   0*     County Line 4830 0.7    0.0    5.0    Feb 27 *   14*     High Ridge 4920 15.4    8.8    25.7    Mar 28 175    60      Beaver Reservoir 5150 -M    0.0    11.4    Mar 26 *   *     Schneider Meadows 5400 14.9    13.0    27.4    Mar 30 115    54      Touchet 5530 12.2    18.4    30.7    Apr 10 66    40      Milk Shakes 5580 31.4    35.3(13) 45.4(13) Apr 19(13) 89    69      Wolf Creek 5630 1.5    1.6    16.6    Apr 03 94    9      Spruce Springs 5700 0.0    0.0(20) 14.7(19) Mar 30(19) *   0*     Taylor Green 5740 1.8    5.0    21.2    Apr 01 36    8      Moss Springs 5760 18.3    17.4    26.4    Apr 09 105    69      Aneroid Lake #2 7400 19.9    24.2    26.0    Apr 30 82    77      Mt. Howard 7910 16.2    17.6    20.6    Apr 25 92    79    Basin Index (%) 94    LOWER COLUMBIA   Pepper Creek 2140 0.0    0.0(13) 9.7(13) Mar 03(13) *   0*     Calamity 2500 0.0    0.0(12) 5.9(12) Mar 08(12) *   0*     Spencer Meadow 3400 10.8    13.6    32.3    Mar 28 79    33      June Lake 3440 32.4    27.0    45.4    Apr 03 120    71      Spirit Lake 3520 0.0    0.0    11.3    Mar 04 *   0*     Skate Creek 3770 16.6    N/A    N/A    N/A    *   *     Lone Pine 3930 33.9    30.4    41.9    Apr 15 112    81      Sheep Canyon 3990 35.8    25.0    40.0    Apr 07 143    90      Surprise Lakes 4290 34.2    37.0    49.0    Apr 10 92    70      Pinto Rock 4440 23.8    N/A    N/A    N/A    *   *     Swift Creek 4440 75.0    59.2(18) 72.5(18) Apr 22(18) 127    103      White Pass E.S. 4440 15.2    14.2    22.6    Apr 05 107    67      Potato Hill 4510 26.7    20.6    32.0    Apr 03 130    83      Paradise 5130 60.8    78.0    81.6    May 04 78    75      Cayuse Pass 5240 35.7    55.8(14) 65.3(14) Apr 19(14) 64    55      Morse Lake 5410 41.5    50.4    57.8    Apr 21 82    72      Pigtail Peak 5800 43.4    53.3    59.2    Apr 29 81    73    Basin Index (%) 96    SOUTH PUGET SOUND   Huckleberry Creek 2250 0.0    0.0(23) 3.9(23) Feb 09(23) *   0*     Mowich 3160 0.0    0.0(22) 3.8(22) Feb 25(22) *   0*     Cougar Mountain 3200 0.0    1.4    17.7    Mar 22 0*   0*     Meadows Pass 3230 9.3    11.0(27) 30.3(27) Mar 28(27) 85    31      Skate Creek 3770 16.6    N/A    N/A    N/A    *   *     Rex River 3810 15.3    23.4(24) 40.4(24) Apr 07(24) 65    38      Stampede Pass 3850 17.6    29.3    38.2    Apr 11 60    46      Lynn Lake 3900 6.4    16.4(13) 29.3(13) Apr 16(13) 39    22      Burnt Mountain 4170 4.4    8.4(21) 20.0(21) Apr 06(21) 52    22      Sawmill Ridge 4640 11.2    30.0(14) 40.3(14) Apr 11(14) 37    28      Paradise 5130 60.8    78.0    81.6    May 04 78    75      Cayuse Pass 5240 35.7    55.8(14) 65.3(14) Apr 19(14) 64    55      Morse Lake 5410 41.5    50.4    57.8    Apr 21 82    72      Corral Pass 5800 24.8    35.5(29) 38.2(29) Apr 25(29) 70    65    Basin Index (%) 67    CENTRAL PUGET SOUND   Mount Gardner 2920 0.0    0.0(27) 17.1(27) Mar 16(27) *   0*     Tinkham Creek 2990 7.1    15.8(27) 28.4(27) Mar 28(27) 45    25      Cougar Mountain 3200 0.0    1.4    17.7    Mar 22 0*   0*     Meadows Pass 3230 9.3    11.0(27) 30.3(27) Mar 28(27) 85    31      Skookum Creek 3310 11.2    21.8(24) 41.2(24) Apr 08(24) 51    27      Alpine Meadows 3500 32.9    51.0(26) 58.7(26) Apr 19(26) 65    56      Rex River 3810 15.3    23.4(24) 40.4(24) Apr 07(24) 65    38      Stevens Pass 3950 18.0    26.6    38.0    Mar 30 68    47      Olallie Meadows 4030 38.4    50.0    55.9    Apr 17 77    69    Basin Index (%) 66    NORTH PUGET SOUND   Hozomeen Camp 1690 -M    N/A    N/A    N/A    *   *     Elbow Lake 3040 1.2    28.3(25) 40.5(25) Apr 01(25) 4    3      Marten Ridge 3520 26.1    55.8(14) 67.2(14) Apr 16(14) 47    39      Beaver Pass 3630 21.7    34.2(19) 44.3(19) Apr 09(19) 63    49      Swamp Creek 3930 0.1    0.0(21) 19.0(21) Mar 20(21) *   1*     Wells Creek 4030 22.5    28.0(24) 35.7(23) Apr 12(23) 80    63      Thunder Basin 4320 12.9    22.8    30.4    Apr 06 57    42      Rainy Pass 4890 17.2    31.6    39.6    Apr 18 54    43      MF Nooksack 4970 45.8    69.1(18) 72.4(18) May 03(18) 66    63      Easy Pass 5270 70.8    97.2(10) 103.2(10) Apr 27(10) 73    69      Brown Top 5830 34.4    66.0(11) 72.6(11) Apr 25(11) 52    47      Lyman Lake 5980 34.5    60.6    66.0    Apr 29 57    52      Harts Pass 6490 33.8    41.1    47.9    Apr 27 82    71    Basin Index (%) 60    OLYMPIC   Mount Crag 3960 17.1    21.4    32.4    Apr 09 80    53      Dungeness 4010 0.0    0.0(21) 9.9(21) Mar 15(21) *   0*     Buckinghorse 4870 31.7    49.4(12) 62.7(12) Apr 17(12) 64    51      Waterhole 5010 19.1    36.8(21) 43.8(21) Apr 21(21) 52    44    Basin Index (%) 63

-M  = Missing data.
 *  = Analysis may not provide a valid measure of conditions.
N/A = Not available.

Footnotes for median and average:
(##) = If less than 30 years are available, this value specifies the number of years used for the median and average calculations.
Sites with less than 10 years available do not have medians or averages.

The snow water equivalent percent of median (or average) represents the current snow water
equivalent found at selected SNOTEL sites in or near the basin compared to the median (or average) value
for those sites on this day.

The snow water equivalent percent of median (or average) peak represents the current
snow water equivalent at selected SNOTEL sites in or near the basin compared to the median (or average)
of the maximum seasonal values observed each water year for those sites.


Contact your state water supply staff for assistance.

Medians and averages are calculated for the period 1991-2020.

Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median or average for the day is less than 10% of the maximum median or average value for the year.

* Basin - More than half of the stations for a basin with normals report missing or invalid data.


The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians or averages and the resulting fraction multiplied by 100.