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Watershed Watch Community Science

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  1. Watershed Watch Community Science
  2. Watershed Watch Methods
    Introduction & What is a Watershed?
    1 Quiz
  3. How Do I Collect Watershed Health Data?
    How to Measure Stream Chemistry?
    4Topics
    |
    1 Quiz
  4. What is an Benthic Macroinvertebrate, How to Sample, What do they tell us about Watershed Health?
    4Topics
    |
    1 Quiz
  5. How do we Measure the Health of Riparian Areas
    7Topics
    |
    1 Quiz
  6. How to Measure Streamflow?
    5Topics
    |
    1 Quiz
  7. How to I Turn My Data Into Action?
    How to organize and interpret my data and develop findings?
  8. How to make a community presentation with my findings?
  9. How write a watershed management plan?
  10. We Calibrate Because We Care! ~ How to maintain and calibrate equipment
  11. How can I find work in the field of watershed science?
  12. How can I influence policymakers and turn my data into action?
Lesson 5, Topic 5
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What’s the width to depth ratio of the lower bank?

August 31, 2020
Lesson Progress
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Width to depth ratio of bankfull width. The ratio of bankfull channel width (the width at the top of the bank determined by its extent when full of water, usually once in two years), is optimal for fish and aquatic insect habitat if less than 7:1 (Rosgen 1994). A very wide and shallow stream with a width/depth ratio of more than 25:1 is considered poor habitat for fish and the macroinvertebrate food supply they depend on (Gibson 1994; Ball 1982). A tape measure and meter stick are used to measure the width and depth of the channel. bank full stream