Ecohydraulic Design of Salmonid Habitat Enhancement Projects in the Central Valley, California

Transcription

1 Ecohydraulic Design of Salmonid Habitat Enhancement Projects in the Central Valley, California Chris Hammersmark cbec eco engineering Ben Taber cbec eco engineering Elizabeth Campbell USFWS John Hannon USBR Joe Merz Cramer Fish Sciences Lilly Allen Sacramento Water Forum 2016 FMA Annual Conference

2 The Lower American A Battered River

3 Focus Species Fall-run Chinook salmon Central Valley steelhead Who are we working for? Life Stages Adult Spawning Egg and Alevin Incubation Juvenile Rearing

4 Gravel Augmentation & Side Channel Projects Upper Sailor Bar 2008 & 2009 Nimbus Dam Sacramento Upper Sunrise 2010 & 2011 Sacramento Bar 2016 You Are Here Riverbend Park 2013 Lower Sailor Bar 2012 Nimbus Basin 2014 Sacramento River

5 The Typical Process Hold on to Your Hats! Select site and specify budget (March) Source and amount of gravel Pre-project topographic, bathymetric & hydraulic surveys Develop, calibrate & validate 2D hydraulic model Iteratively develop design (July) Amount of habitat created Potential for sediment mobility Volume of material Produce construction documents (August) Build project (September) Assess project As-built survey and physical monitoring Biological monitoring

6 Gravel Augmentation & Side Channel Projects Upper Sailor Bar 2008 & 2009 Nimbus Dam Sacramento Upper Sunrise 2010 & 2011 Sacramento Bar 2016 You Are Here Riverbend Park 2013 Lower Sailor Bar 2012 Nimbus Basin 2014 Sacramento River

7 Nimbus Basin Before After Images: John Hannon

8 2014 Site Nimbus Basin

9 2014 Site Nimbus Basin

10 2014 Site Nimbus Basin

11 On-Site Sediment Sorting

12 2014 Site Nimbus Basin Before

13 2014 Site Nimbus Basin After

14 2014 Site Nimbus Basin After

15 Predicted Depth at Design Flow

16 Predicted Velocity at Design Flow

17 American River Specific Spawning Suitability Criteria Velocity Depth Steelhead HSC - John Hannon, USBR Chinook HSC - Cramer Fish Sciences

18 2014 Predicted Spawning Habitat 44 redds observed 78% in medium or high quality habitat

19 2014 Predicted Spawning Habitat & Utilization 926 redds observed 24% of all redds 91% in medium or high quality habitat Redd locations provided by California State University of Sacramento

20 Gravel Augmentation & Side Channel Projects Upper Sailor Bar 2008 & 2009 Nimbus Dam Sacramento Upper Sunrise 2010 & 2011 Sacramento Bar 2016 You Are Here Riverbend Park 2013 Lower Sailor Bar 2012 Nimbus Basin 2014 Sacramento River

21 2012 Site Lower Sailor Bar

22 November 7, Utilization

23 November 7, Utilization

24 2012 Predicted Spawning Habitat & Utilization 514 redds observed 14 % all redds 79% in medium or high quality habitat Redd locations provided by Cramer Fish Sciences

25 2013 Predicted Spawning Habitat & Utilization 65 redds observed 3% of all redds 97% in medium or high quality habitat Redd locations provided by Cramer Fish Sciences

26 2014 Predicted Habitat & Utilization 106 redds observed 3% of all redds 89% in medium or high quality habitat Redd locations provided by Cramer Fish Sciences

27 Gravel Augmentation & Side Channel Projects Upper Sailor Bar 2008 & 2009 Nimbus Dam Sacramento Upper Sunrise 2010 & 2011 Sacramento Bar 2016 You Are Here Riverbend Park 2013 Lower Sailor Bar 2012 Nimbus Basin 2014 Sacramento River

28 Sacramento Bar Pre-Project

29 Sacramento Bar Pre-Project

30 9/1/16 Sacramento Bar Mid-Project

31 Sacramento Bar Mid-Project DEM

32 Sacramento Bar Volume Estimates

33 Project Participants Bureau of Reclamation project coordination, environmental compliance, permitting, contract management, funding Fish and Wildlife Service project coordination, environmental compliance, funding Water Forum environmental compliance, coordination, permitting, contract management, funding City of Sacramento gravel processing operators Sacramento County Parks coordination, permits California State Parks access California Dept of Fish and Wildlife (Game) instream equipment operators, coordination Sacramento State University physical and biological monitoring cbec eco engineering design and physical monitoring Cramer Fish Sciences biological monitoring National Marine Fisheries Service coordination, permits

34 Thanks! Questions?

35 Lessons Learned Ecohydraulic design approach works well Accurately simulating hydraulic conditions is key Post-project hydraulic roughness may be different than you would expect Choice of habitat suitability criteria is very important Relatively small differences in substrate size have resulted in large differences in utilization

36 8/23/1 6 Sacramento Bar Mid-Project