Snow depth and snow water equivalent measurements along a road course and historic snow course in the Andrews Experimental Forest, 1978 to present

  • Creator(s): Alfred B. Levno, Mark D Schulze, Greg Downing
  • PI(s): Mark D Schulze, Sherri L. Johnson
  • Originator(s): Alfred B. Levno
  • Other researcher(s): Greg Downing, Benjamin Nash, Suzanne M. Remillard, Christopher Daly, Stephanie A Schmidt, Adam M Kennedy
  • Dates of data collection: Jan 18 1978 - Jun 11 2022
  • Data collection status: Study continues and further data collection is planned
  • Data access: Online
  • DOI:
  • Last update: Jun 29 2023 (Version 15)
<Citation>     <Acknowledgement>     <Disclaimer>    
Levno, A.; Schulze, M.; Downing, G. 2023. Snow depth and snow water equivalent measurements along a road course and historic snow course in the Andrews Experimental Forest, 1978 to present. Long-Term Ecological Research. Forest Science Data Bank, Corvallis, OR. [Database]. Available: Accessed 2023-12-11.
Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 2025755), US Forest Service Pacific Northwest Research Station, and Oregon State University.
While substantial efforts are made to ensure the accuracy of data and documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is". The Andrews LTER shall not be liable for damages resulting from any use or misinterpretation of data sets.
With an increase in emphasis on monitoring climate change impacts and change in the form of precipitation at HJ Andrews Experimental Forest, snow data collection within our climate monitoring program, a snow course to document depths of snow was designed around a dispersed sampling scheme rather than a point intensive scheme as previously employed in the historic Reference Stand snow course. Primary objectives are to document the presence/absence of snow, snow depth, and time of melt-off. Snow depths are verified using stakes placed near the road to allow for routine and frequent observation. Stakes are placed at different locations, elevations and aspects in paired forested/open sites. Time-lapse cameras were deployed at all the stakes to allow for daily measurements beginning in fall 2014. Truthing of points with snow core sampling for snow moisture content (snow water equivalent) is done when possible, usually 1-2 times per year. Cameras are set to take 3 readings per day (09:00, 12:00, 15:00 PST). One snow depth and coverage is extracted from the images per stake per day.

Study Description Study Site Map Download Study Location Information: (CSV)
Ecological Metadata Language: (EML)
1Snow depth and snow water equivalent measurements along road course (Dec 8 1994 - Jun 11 2022)METADATADATA
includes data from actual site visits and snow stake camera readings of snow depth and coverage beginning in snow year 2015
2Reference Stand snow depth and snow water equivalent measurements (Jan 18 1978 - May 14 2003)METADATADATA
these measurements were discontinued in 2003

 Meteorological data from benchmark stations at the HJ Andrews Experimental Forest, 1957 to present (MS001)
 Air and soil temperature data from the Reference Stand network at the Andrews Experimental Forest, 1971 to present (MS005)