Long-Term Ecological Research (LTER)/AND004: Stream Cross Section Profiles in H.J. Andrews Forest

LTER - Long-Term Ecological Research Program/H.J. Andrews Forest (AND)

LTER/AND004 [Summary adapted from the LTER Core Data Set Catalog]:

This study was established to monitor changes in channel geometry
(width, depth) in response to storms and movement of large organic
debris in a range of stream sizes. Streams generally have cobble to
boulder beds and extensive accumulations of large organic debris both
within and marginal to the active channel. Five sites (Mack Creek
clearcut and old growth, lower and middle Lookout, and Cold Creek) are
located on the H.J. Andrews Experimental Forest; the other two sites
are on north and south forks of Hagen Creek located approximately 15
km west of the Andrews. The Hagen Creek sites were designed to
document channel changes following debris removal and streamside
logging in the riparian corridor; logging has been indefinitely
postponed, however. Drainage areas of surveyed streams range from 0.6
to 61.1 km2. Between 11 to 22 cross sections were surveyed at each
site using a builder's level and stadia rod. Cross sections were
regularly spaced at 20 m at the two Hagen Creek and the Mack Creek
clearcut sites and irregularly spaced at the other sites to sample a
range of channel environments (pools, riffles). Cross sections are
generally resurveyed annually except in years which did not have
significant storms.

The Andrews Forest is in the western Cascade Range of Oregon in the
15,800-acre drainage basin of the Lookout Creek, a tributary of Blue
River and the McKenzie River. The area elevation ranges from 1350
feet to 5340 feet and contains excellent examples of Pacific Northwest
conifer forests, wildlife, and ecosystems.

Information about the Long-Term Ecological Research (LTER) Program can
be obtained from:

LTER Network Office
Email: [e-mail]
"http://lternet.edu"