CDPHE: CDPHE Riffle Invert:  Semi-quantitative invertebrate sample collection of hard-bottomed streams using a modified kick net

  • Summary
  • Analytes
  • Revision
  • Data and Sites
Official Method Name
 Benthic Macroinvertebrate Sampling Protocols, WQCDSOP-001, Riffle or Run Habitat Method
Current Revision
2010
Media
 Biological  (Waterbody type - Wadeable stream)
Instrumentation
 Invertebrate Net (w/ handle)
Method Subcategory
 Population/Community
Method Source
  CDPHE
Citation
  Nonpoint source project monitoring and assessment
Protocol
 CDPHE Invert Protocols - Collection and Preservation of Benthic Macroinvertebrates
Brief Method Summary
 Semi-quantitative sample collection of hard-bottomed streams that focuses collecting macroinvertebrates from riffle/run habitats. These samples are collected using a modified kick net.

In hard-bottomed streams or those streams predominated by substrate greater than gravel size, a single sample shall consist of a one-minute timed sample collected over an area of one square meter (1 m2). The investigator shall select a single riffle or run from within the study reach that represents the predominant velocity and substrate type.
Scope and Application
 This method is to be used in circumstances where hard-bottomed or cobble substrates represent greater than 80% of the study reach in plains/xeric streams.
Applicable Concentration Range
Interferences
Quality Control Requirements
Sample Handling
Maximum Holding Time
Relative Cost
 Unknown
Sample Preparation Methods
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  • NWQMC
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