"Figure 2. Change in Peak Snowpack Timing in the Western United States, 1982-2023",,,
Source: EPA's Climate Change Indicators in the United States: www.epa.gov/climate-indicators,,,
"Data source: USDA Natural Resources Conservation Service, 2023",,,
Web update: June 2024,,,
Units: degrees; degrees; days,,,
,,,
State,Latitude,Longitude,Timing total change (days)
Colorado,37.33067,-105.06766,-32.06976744
Oregon,45.19085,-119.25392,2.644518272
Wyoming,44.8007,-107.84442,-1.382059801
Montana,48.5712,-115.44573,3.800664452
Idaho,44.30342,-115.23447,-1.166112957
Montana,46.09713,-113.13038,2.448504983
Montana,45.79737,-112.52047,-13.64119601
New Mexico,36.51174,-106.31543,-19.59468439
Montana,44.47147,-112.98191,-4.156146179
Nevada,41.83384,-115.45278,-10.04651163
Colorado,40.31176,-105.6467,-12.82392027
Idaho,44.60533,-116.98097,-1.657807309
Wyoming,43.88743,-107.06135,-4.186046512
Wyoming,44.94307,-109.56743,7.930232558
Montana,44.94966,-111.35852,-2.219269103
Utah,39.13683,-111.55813,-13.95348837
Utah,40.61233,-111.09782,5.508305648
Oregon,45.14532,-118.219,14.82392027
Utah,41.37603,-111.94405,-17.57475083
Utah,41.38291,-111.92103,-18.61461794
Nevada,39.31917,-114.62278,-6.202657807
Colorado,39.80364,-105.77786,-5.196013289
Nevada,41.76168,-115.6931,-7.342192691
Nevada,39.29148,-117.11506,-8.049833887
Idaho,44.62621,-115.79561,-2.930232558
Utah,38.30183,-112.35672,-1.096345515
Oregon,42.05257,-122.85487,7.574750831
Oregon,42.40717,-122.26617,-3.388704319
Montana,44.50832,-111.12803,4.199335548
Utah,38.6799,-111.59765,-11.63122924
Montana,46.414,-113.43095,-4.707641196
Wyoming,44.37667,-109.79333,-1.926910299
Oregon,45.4287,-121.85605,5.315614618
Washington,47.35037,-120.6796,-34.37541528
Montana,45.16507,-113.50099,0.797342193
California,38.60801,-119.92455,-5.588039867
Oregon,44.24767,-118.51722,-10.6744186
Wyoming,44.67888,-107.5811,2.352159468
Idaho,42.16442,-114.19272,-10.85714286
Montana,46.5596,-111.28973,-0.468438538
Oregon,44.83052,-118.18787,-23.97342193
Oregon,45.36428,-118.46715,-5.920265781
Montana,45.2719,-110.24903,-10.96345515
Utah,38.50809,-112.01856,-20.99667774
Utah,40.58102,-110.58587,-10.16943522
Colorado,39.08758,-106.54231,-12.97342193
Utah,39.134,-111.43722,-17.57142857
Nevada,41.75067,-117.53182,-2.093023256
Utah,41.68541,-111.41987,-5.50166113
Colorado,39.87504,-107.59902,-25.04983389
Colorado,38.89435,-106.95327,-13.66445183
Montana,45.8838,-113.32553,-12.44518272
Wyoming,44.71961,-110.51084,12.72425249
Montana,44.96192,-111.29403,-12.73754153
Oregon,43.59042,-122.0601,0.102990033
Utah,37.66098,-112.74093,-5.541528239
California,41.58233,-120.3025,-20.84717608
Utah,40.85464,-111.04765,-9.49833887
Utah,40.88529,-111.06954,0.023255814
New Mexico,36.95606,-106.65723,-17.42192691
Oregon,43.22625,-121.80662,-1.372093023
Utah,40.77458,-110.0105,-16.7807309
Utah,39.86671,-111.28363,-16.59468439
Utah,39.89275,-111.25154,-6.435215947
Wyoming,44.40343,-107.06057,-1.445182724
Montana,45.01788,-111.8456,-0.787375415
Oregon,42.53305,-122.17683,-12.37541528
Montana,45.19405,-109.34548,4.166112957
Colorado,40.39591,-106.60437,-16.46179402
Montana,46.46523,-113.39358,-9.07641196
Montana,47.05678,-112.595,-24.47508306
Montana,47.08158,-112.72955,1.548172757
Colorado,39.48917,-106.17154,-9.488372093
Nevada,40.27551,-115.54017,-18.92026578
Idaho,44.28846,-115.65508,0.511627907
Idaho,44.437,-111.99384,-14.96677741
Montana,46.78942,-109.51205,15.09966777
Colorado,37.20939,-105.19988,-3.920265781
Colorado,37.01877,-106.45275,-11
Utah,40.35747,-111.08993,-18.05980066
Montana,46.18367,-113.8533,-9.49833887
Utah,40.2953,-111.25677,-6.980066445
Montana,45.17367,-113.58448,-0.604651163
Montana,46.79279,-110.67545,-1.42192691
Colorado,40.80572,-105.77018,-1.541528239
Oregon,44.4465,-119.93012,-12.15614618
Utah,39.04554,-111.46875,-8.700996678
California,41.99127,-120.18033,1.604651163
Montana,44.79317,-112.05645,-4.657807309
Wyoming,41.30399,-107.15255,-3.475083056
Idaho,43.6025,-114.67417,-17.31229236
Wyoming,44.57462,-107.29537,-1.408637874
Nevada,40.89343,-115.21104,-8.392026578
Utah,41.41289,-111.5377,-8.299003322
Colorado,40.5337,-106.7814,-11.34551495
California,38.5497,-119.80468,-4.584717608
California,38.849,-120.0795,-4.009966777
Oregon,44.86887,-118.11387,-13.53156146
Colorado,40.84758,-106.96861,-16.40531561
Wyoming,43.00657,-109.75893,-2.046511628
Montana,48.43412,-113.93725,-7.534883721
California,38.93403,-120.0545,5.644518272
Utah,40.97462,-111.80975,-5.415282392
Utah,38.77246,-111.67662,-7.624584718
Nevada,41.82098,-116.10153,-13.27906977
Oregon,42.70992,-118.6321,-8.65448505
Oregon,42.3801,-122.34943,19.91694352
Montana,45.06235,-109.94488,8.332225914
Utah,40.71785,-110.46721,-13.76079734
Montana,48.80225,-113.85713,8.96345515
Oregon,42.43933,-122.2288,-6.126245847
Idaho,42.0505,-111.6012,-10.87043189
Colorado,39.38014,-106.19784,-6.159468439
Montana,46.43545,-112.19277,-12.96013289
New Mexico,36.19418,-105.55742,-23.77408638
Idaho,43.6104,-113.9308,-6.265780731
Oregon,44.7638,-118.3117,5.046511628
Utah,38.80034,-111.68333,-14.57142857
Idaho,43.9538,-115.27387,-10.49169435
Nevada,41.67032,-117.56668,-9.086378738
Wyoming,44.12612,-110.83435,1.57807309
Montana,48.91453,-114.76663,8.96345515
Nevada,40.3848,-115.52757,-5.122923588
Colorado,39.64646,-105.8694,-6.34551495
Wyoming,43.38939,-110.12943,-8.109634551
California,38.8519,-119.9374,-23.45182724
Montana,48.30754,-114.84075,-18.37873754
Arizona,33.65352,-109.30877,-24.17275748
Wyoming,44.25602,-106.97983,1.784053156
Utah,37.48997,-112.57602,-0.202657807
Montana,48.9723,-115.95337,-8.544850498
Utah,40.79669,-110.88472,-14.48837209
California,38.92431,-119.91641,-2.657807309
Oregon,45.69682,-118.10657,20.71096346
Wyoming,42.86984,-109.09455,3.873754153
Oregon,44.42042,-121.85655,-35.39534884
Oregon,43.66917,-122.56877,-9.747508306
Montana,46.9751,-115.0349,8.990033223
Colorado,39.36092,-106.05999,1.209302326
New Mexico,36.71632,-106.2637,-8.993355482
Utah,41.31372,-111.44624,-9.877076412
Idaho,42.32029,-113.61587,-6.029900332
Idaho,43.71077,-114.15894,-0.521594684
Colorado,37.93389,-107.6762,-7.478405316
California,39.45269,-120.29367,-9.694352159
California,39.49001,-120.28226,-14.66777409
California,39.42752,-120.31342,1.870431894
Colorado,39.07543,-106.61154,-10.82724252
Utah,39.89166,-110.74604,-17.63787375
Nevada,41.54675,-116.00517,-9.448504983
Colorado,40.53285,-105.88747,-5.644518272
Colorado,39.3172,-106.61501,-11.35548173
Utah,38.48383,-112.39273,-19.72425249
Utah,40.71632,-109.54401,-13.43853821
Wyoming,43.86067,-109.32163,-3.182724252
Utah,37.52664,-113.05386,-13.98006645
Montana,47.42749,-113.77515,5.159468439
Oregon,44.21007,-118.63752,-23.82392027
Colorado,39.93659,-105.59031,-13.4717608
Colorado,40.41446,-105.81941,-11.089701
Utah,40.59709,-110.43316,-9.554817276
Montana,44.58907,-111.82498,-16.71760797
Nevada,40.6448,-115.3812,-6.714285714
Utah,38.48226,-109.27198,-14.73421927
Nevada,41.77637,-116.02957,-3.318936877
California,38.30367,-119.55111,-9.57807309
Montana,44.9938,-113.44399,-4.358803987
Wyoming,44.20862,-110.66628,2.524916944
Montana,45.5041,-110.96625,15.9269103
Utah,40.86493,-110.79813,-14.10631229
Colorado,37.38028,-106.54823,-38.6179402
Utah,41.40562,-111.82607,-9.990033223
Wyoming,43.50278,-109.752,-6.382059801
Colorado,37.79895,-107.92475,-26.22259136
California,38.43745,-119.36572,-8.518272425
Colorado,37.89169,-108.19636,-3.176079734
Washington,46.27143,-121.96288,1.372093023
Utah,37.51255,-113.39661,-5.607973422
Wyoming,43.17387,-110.14007,-5.102990033
Montana,45.50871,-111.92288,-1.873754153
Montana,46.88293,-113.32228,1.225913621
Montana,44.58623,-111.11627,5.877076412
Idaho,42.18072,-114.28662,-2.897009967
Utah,39.68338,-111.31818,-20.35215947
Montana,48.79698,-113.6705,2.797342193
Nevada,39.16395,-119.89672,-4.428571429
Arizona,33.92123,-109.45872,-9.813953488
Colorado,39.12899,-107.28834,-22.6345515
Oregon,44.2103,-121.87292,-6.295681063
Utah,38.30285,-112.43637,-3.38538206
Colorado,37.61779,-107.03932,-20.089701
Wyoming,43.62728,-107.18138,-11.31893688
Utah,37.56933,-112.83849,-5.73089701
Colorado,37.84737,-107.72657,-15.46179402
Utah,41.46547,-111.49688,-9.993355482
Montana,45.21759,-110.237,-8.990033223
Idaho,44.4147,-113.39812,-15.48837209
Idaho,44.84237,-114.26871,-22.94019934
Utah,40.60798,-109.8881,-18.21594684
Oregon,45.27173,-117.68747,12.09302326
Montana,47.91727,-112.8238,-2.77076412
Idaho,45.69694,-115.22972,-4.598006645
Oregon,45.32097,-121.7158,-2.717607973
Nevada,39.31573,-119.89473,-8.514950166
Oregon,45.26522,-117.17373,-2.803986711
Montana,45.40957,-112.95927,-0.488372093
Montana,46.8716,-113.27725,8.764119601
Montana,45.73107,-114.48075,-3.455149502
Colorado,40.03581,-105.5452,4.079734219
Montana,48.15678,-113.94637,-3.03986711
New Mexico,36.99396,-105.25988,-25.57142857
Wyoming,41.33087,-106.37558,-7.774086379
Montana,45.00565,-110.01406,-10.90697674
Oregon,44.42917,-120.3311,-17.17607973
Wyoming,41.15426,-106.96926,3.225913621
Wyoming,43.65868,-109.00988,-8.906976744
Colorado,38.81982,-106.58962,6.199335548
Washington,48.44488,-120.91551,5.627906977
Colorado,39.04433,-107.87951,-5.073089701
Wyoming,44.73396,-109.91484,-7.069767442
Utah,40.76184,-111.62917,2.468438538
Utah,39.92976,-111.63109,-18.17607973
Colorado,40.39803,-105.84606,-11.62458472
Wyoming,43.51687,-110.91258,-11.5448505
Montana,46.57978,-111.26832,11.59136213
Utah,39.01219,-111.58259,-21.30564784
Washington,46.62153,-121.38643,0.867109635
Montana,48.30305,-113.32868,-34.21262458
Montana,45.41905,-110.08844,-1.548172757
California,38.50576,-119.62624,7.671096346
Nevada,41.87255,-115.24713,-1.893687708
Washington,47.9909,-120.56622,-0.837209302
Montana,46.11192,-110.4696,-8.146179402
Colorado,38.48864,-106.33967,-13.80730897
Wyoming,44.16188,-107.12622,-6.089700997
New Mexico,35.92195,-106.39179,-27.09634551
Colorado,37.89168,-107.71389,-7.478405316
Utah,39.45197,-111.27221,-11.31561462
New Mexico,36.69935,-105.34145,-20.03654485
Colorado,40.87498,-106.04675,-8.873754153
Oregon,43.90098,-122.03063,1.521594684
Utah,40.54875,-110.69292,0.119601329
Montana,46.35613,-112.26176,-9.784053156
Utah,40.44293,-112.22377,-11.47840532
California,38.99927,-120.13139,-10.64119601
Montana,46.0896,-110.43363,2.006644518
Montana,45.69259,-113.96828,6.408637874
Oregon,43.61193,-122.11758,10.67774086
Wyoming,42.5075,-110.9099,-0.348837209
Idaho,45.18848,-115.97152,-2.282392027
Utah,39.31042,-111.43297,-15.64119601
New Mexico,36.00152,-106.83408,-17.21262458
Oregon,42.69825,-122.14165,1.205980066
Nevada,41.73732,-115.47215,-1.747508306
Wyoming,44.50012,-107.42947,-2.159468439
Montana,45.40125,-110.95758,1.906976744
Oregon,42.95615,-121.18123,-10.57142857
New Mexico,33.3696,-108.70711,-14.94019934
Oregon,42.75333,-118.68785,-12.18936877
Montana,46.24212,-113.7725,-15.84053156
Idaho,42.56248,-111.29797,-6.657807309
Colorado,37.99076,-107.20392,-16.66445183
Utah,40.78931,-111.09192,-1.970099668
Oregon,43.94885,-119.54013,-6.425249169
Idaho,42.95275,-111.35933,-2.069767442
California,38.31021,-119.6003,-2.122923588
Wyoming,41.3295,-106.5025,-15.04651163
Idaho,42.76478,-116.90037,-11.19601329
Montana,46.77962,-110.62165,-2.401993355
California,39.18986,-120.26576,-13.29900332
Montana,48.90902,-114.86298,-6.142857143
Oregon,44.26423,-119.02162,6.627906977
Utah,40.90862,-110.50462,-9.61461794
Washington,47.74607,-121.09288,5.976744186
Idaho,43.86117,-114.20902,-6.388704319
Utah,40.16483,-111.20665,-4.554817276
Wyoming,44.7225,-107.40033,-1.810631229
Oregon,42.6957,-120.80158,-25.17275748
Oregon,43.44907,-122.13808,0.647840532
Washington,46.09497,-121.76345,-0.013289037
Idaho,43.626,-113.96887,-3.544850498
Wyoming,44.47764,-110.15651,-16.93355482
California,39.17162,-120.15362,-21.65780731
Oregon,45.07707,-117.55067,-6.372093023
Montana,44.78562,-111.71,-7.405315615
Oregon,44.14425,-121.64095,-24.31893688
Utah,40.42817,-111.61633,-7.23255814
Oregon,44.65567,-118.42617,-3.325581395
Wyoming,43.74902,-110.0578,-7.362126246
Utah,41.89833,-111.62957,-11.53488372
Colorado,40.5374,-106.67655,-2.225913621
Wyoming,42.69525,-108.89572,2.571428571
Utah,40.678,-110.94873,3.056478405
Idaho,43.62903,-115.43818,-5
Washington,47.23328,-120.29412,25.54152824
Utah,40.739,-109.6728,-12.30564784
California,39.30087,-120.18407,0.418604651
Montana,46.14287,-114.44755,-4.777408638
Montana,46.1438,-114.5056,-5.700996678
Wyoming,44.15178,-110.22122,-5.468438538
Colorado,40.03307,-105.57562,4.634551495
Colorado,37.48563,-106.83528,-18.3820598
Washington,47.28734,-120.37015,-1.066445183
Colorado,39.61765,-106.38019,-30.6179402
Utah,39.93667,-112.41478,-8.22923588
California,38.07298,-119.23433,-2.302325581
Montana,47.91998,-112.79087,12.03654485
California,39.13545,-120.21865,-3.023255814
Nevada,39.13242,-114.95575,-6.750830565
Montana,46.27368,-113.164,0.750830565
Wyoming,41.1591,-106.92809,-11.99667774
Utah,37.575,-112.90155,-5.196013289
Colorado,37.21423,-105.12262,-16.41528239
Montana,44.61088,-111.14998,-3.574750831
Montana,45.04575,-109.90987,-1.980066445
Washington,46.64142,-121.38153,8.784053156
Utah,37.83633,-111.88163,-14.13289037
Colorado,40.34734,-106.0952,-8.388704319
Colorado,40.43397,-105.73588,1.697674419
Oregon,45.06703,-118.15192,-8.096345515
Wyoming,44.80417,-109.657,-4.458471761
Montana,47.44847,-112.81428,-9.568106312
Montana,48.97523,-115.81915,12.90697674
Montana,44.65866,-111.09199,-4.588039867
Montana,46.12588,-113.30792,-7.352159468