Stream cross-section profiles in the Andrews Experimental Forest and Hagan Block RNA 1978 to present

  • PI: Sherri L. Johnson
  • Originator: Frederick J. Swanson
  • Other researchers: Julia A. Jones, Gordon E. Grant, John M. Faustini
  • Dates of data collection: Apr 14 1978 - Sep 6 2011
  • Data collection status: Study continues and further data collection is planned
  • Data access: Online
  • Access constraint: Entities describing original permanent monument surveys, original raw survey data and adjustments, and other intermediate forms of the data are only available upon request.
  • Last update: Jan 14 2014 (Version 10)
<Citation>     <Acknowledgement>     <Disclaimer>    
Johnson, S.; Swanson, F. 2014. Stream cross-section profiles in the Andrews Experimental Forest and Hagan Block RNA 1978 to present. Long-Term Ecological Research. Forest Science Data Bank, Corvallis, OR. [Database]. Available: (27 June 2017) DOI:
Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 1440409), 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.
This database consists of periodically resurveyed cross-section profiles for 5 sites (stream reaches) located in the H.J. Andrews Experimental Forest on 3rd to 5th-order stream channels over the period 1978-present, and also includes historical data from Shorter Creek within the Andrews and two sites (North and South) on the Hagan Creek in the Hagan Block RNA. Each of these sites includes 10-20 cross sections spaced about 10-50 m apart. Observations include cross-sectional geometry based on surveys relative to a horizontal line between permanent stations on opposite sides of the stream, substrate type based on pebble counts and notes on extent of bedrock, and photo-documentation of the sites. Sampling was primarily done annually until 2000 and opportunistically since then depending on funding and noted geomorphic changes in response to floods. Sampling at least every 5 years is desired. Data tables cover 1. elevation and distance measurements between fixed end points, 2. pebble counts for particle size, 3. measures of extent of exposed bedrock, 4. vegetation (1984 only) in terms of % cover by spp., % cover of substrate types, and plant measurements for making biomass estimates with allometric equations, but such estimates are not presented. The original raw cross-section data for these sites has been adjusted to align profiles for consecutive year comparisons at each cross-section location to correct for imprecision in the survey methodology. John Faustini further corrected this cross-section data from 1978-1998 for the five main sites in Study GS019. The Shorter Creek cross-section surveys took place in 1978-1982 only.

Study Description Study Site Map Taxonomic Hierarchy Download Study Location Information: (CSV)
Download Full Documentation: (PDF)(EML)
1Andrews long-term stream cross-section data for Lookout Ck, Mack Ck and Cold Ck (Apr 14 1978 - Aug 18 2009)METADATADATA
Elevation and distance measurements are made between fixed end posts. Elevations and distances are corrected until 1995 for year to year comparison, but Z-post (zero distance post) elevations continue to be standardized for comparison.
2Historic Hagan North and South Fork and Andrews Shorter Creek cross-section data (Jun 13 1978 - Sep 10 1987)METADATADATA
Elevation and distance measurements between fixed end posts adjusted for comparison.
3Particle count sampling along stream cross-sections (Jul 1 1995 - Aug 18 2009)METADATADATA
Particle count samples: b-axis particle diameter
4Particle count sampling comments including presence of bedrock (Jul 1 1995 - Aug 18 2009)METADATADATA
Bedrock encountered in particle sampling is noted.
5Vegetation transect data (1984 only) - percent cover by species (Jun 27 1984 - Aug 2 1984)METADATADATA
Percent cover by species in transect plots - 1984 survey of Mack Cr clearcut riparian vegetation.
6Vegetation transect data (1984 only) - percent substrate type (Jun 27 1984 - Aug 2 1984)METADATADATA
Percent substrate types in transect plots - 1984 riparian survey of Mack Cr clearcut
7Vegetation transect data (1984 only) - raw biomass measurements (Jun 27 1984 - Aug 3 1984)METADATAData not online
Raw biomass measurements of height, diameter, leaf or frond length or count, etc. along transect in 1984 survey - biomass not calculated and calculation through allometric equations is needed.

 Cross-section protocols - Original cross-section protocols, Shorter Creek protocols, and particle count protocol
 Lower Lookout Creek map - Map of the Lower Lookout cross-section reach (partial)
 Hagan Creek cross-section establishment - Hagan North and South Fork establishment report and maps
 Wolman pebble count protocol - Description of Wolman pebble count

 Nakamura, Futoshi, Swanson, Frederick J. 1993, Effects of coarse woody debris on morphology and sediment storage of a mountain stream system in western Oregon (Pub. No: 1265)
 Madej, Mary Ann 1999, Patterns of hillslope and channel recovery following disturbances in steep, forested basins (Pub. No: 2757)
 Faustini, John M. 2000, Stream channel response to peak flows in a fifth-order mountain watershed (Pub. No: 2781)
 Faustini, John M., Jones, Julia A. 2003, Influence of large woody debris on channel morphology and dynamics in steep, boulder-rich mountain streams, western Cascades, Oregon (Pub. No: 3013)