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Timelapse photos, locations, and associated metadata for Snoqualmie Pass, WA


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Open data: Wayand, N. E., et al. 2015, A Meteorological and Snow observational data set from Snoqualmie Pass (921 m), Washington Cascades, U.S., Water Resources Research, Data available from: Forest data: Dickerson-Lange, et al. 2016, Snow disappearance timing in warm winter climates is dominated by forest effects on snow accumulation, in preparation for Hydrological Processes


Daily snow depth values from the UW Snoqualmie Pass site. A timelapse camera and 3 snow depth poles were deployed at the forest plot during water year 2015. Manual snow stake observations were taken in the open plot. This comparison of snow depth between the open and forest uses the daily snow depth data observed with the snow stake, rounded to 5cm, compared to the average of all visible pole values in the forest (read by eye from photos), also rounded to 5 cm. These data have been processed, aggregated and rounded. Raw photographs of the forest poles are also available. UW_Snoqualmie_snow_camera Attributes: Site - Snoqualmie, Cover - Forest or open, WY - water year 2015, Date - yyyy-mm-dd, Method - snow depth pole (with time [...]


Principal Investigator :
Jessica Lundquist
Point of Contact :
Susan E. Dickerson-Lange
Distributor :
U.S. Geological Survey - ScienceBase
Metadata Contact :
Susan E. Dickerson-Lange
Originator :
Jessica Lundquist, Susan E. Dickerson-Lange

Attached Files

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Snoq (1-100).zip 148.03 MB application/zip
Snoq (101-200).zip 147.67 MB application/zip
Snoq (201-300).zip 147.5 MB application/zip
Snoq (301-370).zip 103.34 MB application/zip
UW_Snoqualmie_snow_camera_stake_WY2015_rounded_5.csv 23.09 KB text/csv
UW_Snoqualmie_snow_camera_stake_WY2015_rounded_5_README.txt 1.93 KB text/plain


Climate change is projected to cause earlier snowmelt, with potentially serious consequences for terrestrial and aquatic ecosystems and for municipal and agricultural water supplies. However, if forests can be managed to retain snow longer, some of these environmental and financial impacts may be mitigated. Recent results from our research team demonstrate that in areas with relatively warm winters, strategically-cut forest gaps could offset climatic warming by increasing snow retention on the landscape and delaying runoff. However, in areas with colder winters, the opposite is true, as snow lasts longer under the forest canopy. We will map these climate-forest-snow interactions across the Pacific Northwest, predicting how forest change is likely to affect snow duration in different locations and testing those predictions against careful observations from our field sites and a network of citizen scientists. Working with regional forest and water managers, we will identify strategies for applying these findings to decision-making, linking climate-forest-snow interactions to ecohydrologic conditions important to management. Results from this project will help managers to act strategically to maximize snow retention (protecting forests in some areas while opening gaps in others), providing more water later in the season for hydropower, agriculture, and fish flows.


Spatial Services

ScienceBase WMS


  • National and Regional Climate Adaptation Science Centers
  • Northwest CASC

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