Barrier Nets for Fish Guidance and Reduction of Entrainment at Water Intakes

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1 University of Massachusetts - Amherst ScholarWorks@UMass Amherst International Conference on Engineering and Ecohydrology for Fish Passage International Conference on Engineering and Ecohydrology for Fish Passage 2014 Jun 9th, 3:10 PM - 3:30 PM Barrier Nets for Fish Guidance and Reduction of Entrainment at Water Intakes S. Scott University of Wisconsin - Madison Follow this and additional works at: Scott, S., "Barrier Nets for Fish Guidance and Reduction of Entrainment at Water Intakes" (2014). International Conference on Engineering and Ecohydrology for Fish Passage This Event is brought to you for free and open access by the The Fish Passage Community at UMass Amherst at ScholarWorks@UMass Amherst. It has been accepted for inclusion in International Conference on Engineering and Ecohydrology for Fish Passage by an authorized administrator of ScholarWorks@UMass Amherst. For more information, please contact scholarworks@library.umass.edu.

2 Shane Scott S. Scott & Associates LLC (360)

3 1. Guidance Downstream juvenile fish passage Improve juvenile fish collection 2. Exclusion Adult or juvenile fish protection Section 316(b) of the Clean Water Act

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5 Migratory cues are disrupted in reservoirs

6 Spill Lights Acoustic Bubble Curtains

7 Purpose: Guide juvenile salmonids into Floating Surface Collectors (FSCs) Several installations in the PNW May have utility in other regions for anadromous and catadromous fish (i.e. eels)

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9 Upper Baker FSC Baker Lake, WA

10 Upper Baker FSC Baker Lake, WA

11 Upper Baker FSC Baker Lake, WA Purpose: Guide juvenile salmonids into FSC Length = 2,000 ft. Maximum depth = 225 3/32 and 1/2 knotless Dyneema Designed for single-directional currents fps Debris barrier protects net Successfully guides juveniles to FSC

12 Number of Fish Captured at UB FSC Upper Baker FSC Baker Lake, WA 700, ,000 Upper Baker River Juvenile Outmigration, (period of data record) 2013 (6th-yr FSC) (5th-yr FSC) - 600, , ,000 Total Collected Trend Line 2010 (3rd-yr FSC) (2nd-yr FSC) - 4th-highest migration - 443, , , , redesigned net & NTS installed on existing "gulper" 2008 (1st-yr FSC) - 2nd-highest migration at time - 280, , , nets extended to bottom 200, , , ,828 migrants (1st nets installed) 2011 (4th-yr FSC) - 266,820 50,000 0 Courtesy Puget Sound Energy Year

13 Exclusion Nets

14 Exclusion Nets

15 Exclusion Nets Purpose: Reduce impingement mortality at turbines or thermal plants Viable option for CWA 316(b) compliance Adult and juvenile fish, turtles, jelly fish, algae blooms (i.e. fouling organisms) Reduce fish impingement 80 to 95%* Relatively low cost compared to screens More O&M requirement * EPRI Design Considerations and Specifications for Fish Barrier Net Deployment at Cooling Water Intake Structures. EPRI, Palo Alto, CA:

16 Bagnell Dam Lake of the Ozarks, MO

17 Bagnell Dam Lake of the Ozarks, MO Debris Net Barrier Net

18 Bagnell Dam Lake of the Ozarks, MO Purpose: Reduce entrainment of paddlefish and other species larger than 9 inches Length = 1,000 ft. Average depth = stretch knotted Dyneema Designed for bi-directional currents fps Debris net protects barrier net Limited numbers of small fish observed passing turbines* *Annual Report: Missouri Department of Conservation Fiscal Year July 1, 2009 to June 30, 2010

19 Ludington Pumped Storage Station Lake Michigan, MI Barrier Net Pump Generator Station

20 Ludington Pumped Storage Station Lake Michigan, MI Pump Generator Station Barrier Net

21 Ludington Pumped Storage Station Lake Michigan, MI Purpose: Reduce entrainment of fish 4 and larger (e.g. yellow perch, walleye) Length = 2.8 miles Average depth = 55 1 and 1-1/2 stretch knotted Dyneema Designed for bi-directional currents fps In 2012, game fish effectiveness was 76% and large forage fish effectiveness was 95%. * * Consumers Energy Company and The Detroit Edison Company Ludington Pumped Storage Project; Project No Annual Report of Barrier Net Operation for 2012

22 Permanent physical structures Significantly improves fish collection and/or safely reduces entrainment Relatively inexpensive Proper design and O&M are the key to success

23 Barrier Nets QUESTIONS?