River Restoration Northwest is a nonprofit scientific and educational organization. Our mission is to advance the science and standards of practice of river restoration through an interdisciplinary approach.

Our organization formed in response to the February 2002 Northwest Stream Restoration Design Symposium. Strong participation in the meeting highlighted the need for an interdisciplinary forum for river restoration professionals.

Mission & GoalsHistoryBoardMembersDocuments


River Restoration Northwest seeks to advance the science and standards of practice of river restoration through educational programs that emphasize an interdisciplinary approach to promote responsible practices, discuss and exchange ideas, assess projects, reflect on lessons learned, and provide technology transfer.


Our organizational goals are to:

  • Promote responsible practices in the design of river restoration projects.
  • Enhance discussion and exchange of ideas between river restoration professionals with different disciplinary backgrounds including: aquatic and fisheries biology, geomorphology, landscape architecture, hydrologic and hydraulic engineering, wetland science, and soil science.
  • Provide a forum for project assessment and reflections on lessons learned.
  • Create opportunities for professional development and technical information exchange.
  • Provide technology transfer from research to practice.

If you would like more information about RRNW or would like to join the organization, please contact us!

We are excited to welcome new members and encourage you to share your ideas for the organization.

In August 2001, a group of Oregonian river restoration professionals met in the Reno airport on their return from a national wetlands and river engineering conference. They were struck by the need for a regional forum for design professionals and decided to organize a symposium. With hard work and good luck, the symposium came together within a few months. The first Northwest Stream Restoration Design Symposium was held in February 2002 at Skamania Lodge in Stevenson, WA. The symposium was enthusiastically attended by more than 200 engineers, biologists, hydrologists, and other stream restoration professionals.

In response to this success, the original “airport founders” (and others they’d enlisted along the way), decided to establish RRNW. We incorporated in Oregon as a 501(c)(3) non-profit organization in May 2002. We received Federal tax-exempt status from the IRS in 2003. We look forward to welcoming new members and expanding the activities of the organization!


  • President  – Virginia Mahacek
  • Vice President of Operations (VPO) – Marjorie Wolfe
  • Vice President of Programs (VPP) – Sandy Allegretto
  • Treasurer – Matt Brennan
  • Secretary – Sue Niezgoda

Board of Directors

  • Paul Agrimis, Oregon
  • Sandy Allegretto, British Columbia
  • Matt Brennan, Oregon
  • Susan Firor, Idaho
  • Gardner Johnston, Oregon
  • Virginia Mahacek, California
  • Adam McGuire, Oregon
  • Brittany Morlin, Washington
  • Sue Niezgoda, Washington
  • Mauria Pappagallo, Oregon
  • Terril Stevenson, Idaho
  • Marjorie Wolfe, Oregon

RRNW’s Annual Member’s Meeting will be held on February 7, 2018 from 12:00 to 1:30 at Skamania Lodge. The meeting agenda is here.

RRNW members will vote to elect up to five (5) Directors for terms commencing in February 2018. The candidates are shown here, and more detailed information on each of them can be found below the table.

Board CandidateAffiliationLocationFocus/Specialties
Danielle Devier, PLANatural Systems DesignSeattle, WALandscape architecture planning and design for shoreline, estuarine and river restoration.
Darlene SiegelWolf Water ResourcesPortland, ORAquatic and fisheries biology, restoration design and habitat valuation.
Kris FischerConfederated Tribes of the Umatilla Indian ReservationWalla Walla, WARestoration planning and design, stakeholder engagement.
Mauria Pappagallo, PEEnvironmental Science AssociatesPortland, ORHydraulics, modeling, geomorphology, restoration design and permitting.
Morgan Clay, EITOtak, Inc.Vancouver, WAFish passage, stream design, and low impact urban development engineering.

Candidate Bios

Danielle Devier, PLA
Darlene Siegel
Kris Fischer
Mauria Pappagallo, PE
Morgan Clay, EIT
The following public documents are available for download: