River Restoration Survey Clarifications


Strahler Stream Order:

Strahler's (1952) stream order system is a simple method of classifying stream segments based on the number of tributaries upstream. A stream with no tributaries (headwater stream) is considered a first order stream. A segment downstream of the confluence of two first order streams is a second order stream. Thus, a nth order stream is always located downstream of the confluence of two (n-1)th order streams.

  • Schematic diagram of stream order.
  • Download a Strahler Stream Order ARC utility form CEH.
  • Strahler, A. N. (1952). Dynamic basis of geomorphology. Geological Society of America Bulletin, 63, 923-938.
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Last updated by Joe Wheaton ©2004 on: 5 April, 2004 13:46