Recommendation for Incorporating Fish Passage into Emergency Flood Response: CPW

  •  Identify priority streams for fish passage prior to the next flood.
  •  Develop fish passage design criteria for priority streams.
  •  Develop a process for addressing fish passage at diversion structures that is endorsed by the ACOE (Army Corps of Engineers), FEMA, and SHPO (State Historical Preservation Office). This process should address funding and permitting constraints, including the historical designation of diversion structures.
  •  Establish an emergency flood-response fund that could be used for fish passage and post-flood habitat conservation.
  •  Improve awareness of alternative diversion structure designs that accommodate fish passage and improve stream functions, such as the cross-vane diversion structure.
  •  Incorporate fish screens into diversion designs to reduce the frequency of fish entrainment in irrigation ditches. This will require addressing funding issues related to pre-existing conditions.
  •  Improve understanding among stakeholders of aquatic organisms found in Colorado streams and rivers, including the economic value of sport fish populations and ecological significance of native species.
  •  Utilize Regional General Permit No. 12 for permitting fish passage projects in Colorado.

    Cross Vane Structure Used in Fish Passage Design

    From: Eric E. Richer, Matt C. Kondratieff, and Benjamin D. Swigle, Post-Flood Recovery Assessment and Stream Restoration Guidelines for the Colorado Front Range, Colorado Parks and Wildlife, Fort Collins, Colorado, April 29, 2015

    Download full document: CPW Post Flood Assessment and Guidelines (.pdf)

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