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LESSONS LEARNED PILOT STUDY MAY 12, 2009 – SEPTEMBER 13, 2009 Leslie Alber.

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Presentation on theme: "LESSONS LEARNED PILOT STUDY MAY 12, 2009 – SEPTEMBER 13, 2009 Leslie Alber."— Presentation transcript:

1 LESSONS LEARNED PILOT STUDY MAY 12, 2009 – SEPTEMBER 13, 2009 Leslie Alber

2 To determine spatial and temporal distributions ◦immigration period (spring) ◦holding period (spring through fall) ◦spawning period (fall)

3 Tagged 30 adult spring-run Chinook Salmon ◦Hook-and-line sampling ◦MAY 12, 2009 – MAY 26, 2009 ◦Vemco V13 transmitters via esophageal/gastric insertion  Random repeat intervals of sec Passive Tracking Active Tracking ◦19 VEMCO VR2W monitoring receivers  Yuba/Feather River Confluence  Narrows Reach (below Englebright Dam) ◦ Maintained & downloaded by Jonathan Nelson and the Wild Trout crew ◦ VEMCO VR100 mobile tracking receiver w/ VH110 directional hydrophone  Weekly surveys by boat (Narrows  Confluence) or foot (Narrows  Englebright)  May 20, 2009 – November 13, 2009

4 VR2W Locations

5 29 Fish Detected ( ) 5 Never detected above DPD 2 Last detected in the Feather River 3 "Lost" Never detected after DPD 24 Fish detected above DPD 10 Detected in the Narrows reach

6 8 Detected below DPD plunge pool/ Station 05/05A 2 Tagged at RM2 6 Tagged at DPD 1 Held at DPD before and after being detected downstream 2 Last detected in the Feather River 3 Detected downstream before holding at DPD

7 Lowest receiver downstream Highest receiver upstream

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12 The area between DPD and Hwy 20 was most likely used largely as a migratory corridor.

13 By August 31, 2009 (date of first observed redd) 16 fish were detected at or above Hwy 20 ◦The remaining 8 fish were first detected in this section between September 1, 2009 and September 25, 2009

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16 Sept. 7-11, 2009Sept , 2009Sept , 2009Sept. 28- Oct. 2, 2009Oct. 5-9, 2009

17 Daguerre Point Dam Timbuctoo Hwy 20 Bridge Narrows Pool Simpson Lane Bridge Feather River * Week Following First Observed Redd RST site Movement of Adult Spring-Run Chinook Salmon Lower Yuba River May 12-18, 2009May 19-25, 2009May 26- June 1, 2009June 2-8, 2009June 9-15, 2009June 16-22, 2009June 23-29, 2009June 30- July 6, 2009July 7-13, 2009July 14-20, 2009July 21-27, 2009July 28- Aug. 3, 2009Aug. 4-10, 2009Aug , 2009Aug , 2009Aug , 2009Sept. 1-7, 2009Sept. 8-14, 2009Sept , 2009Sept , 2009Sept. 29- Oct. 5, 2009Oct. 6-12, 2009Oct , 2009Oct , 2009Oct. 27- Nov. 2, 2009Nov. 3-9, 2009Nov , 2009 Index-Area Site

18 Individual movement patterns were diverse Fish held in the DPD plunge pool 1/3 of the Chinook tagged were tracked in the Narrows Reach All fish tracked above DPD were detected at or above Hwy 20 during the spawning period

19 Jonathan Nelson, Roger Bloom, Brian Hennes and the Wild Trout Crew Brian Kreb, Jen Bergman, Duane Massa, Casey Campos, Ryan Greathouse, Kyle Thompson, Colin Purdy, Derek Givens, & Naoaki Ikemiyagi (PSMFC Yuba River Crew) River Management Team Land Owners (UC Davis Extension, Cordua Irrigation District, PG&E, Yuba Recreation Inc.)

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