1. White Sturgeon Mitigation and Restoration in The Columbia and Snake Rivers Upstream from Bonneville Dam Project 198605000 Washington Department of Fish and Wildlife

2. Stock Assessment & Fisheries Monitoring Stock Assessment & Fisheries Monitoring Recruitment Monitoring Recruitment Monitoring Juvenile Transplants Juvenile Transplants Hatchery Releases Hatchery Releases Maturation Cycle Maturation Cycle White Sturgeon Mitigation and Restoration

3. Stock Assessment & Fisheries Monitoring Total Length Year 24-3636-4848-6060-7272+ Sum Bonneville Reservoir 199982,40041,8003,200600400128,400 200384,50033,0001,020120780119,420 +2%-21%-68%-80%+95%-7% The Dalles Reservoir 200282,90013,5005,9001,200800104,300 200590,60010,2001,125500400102,825 +9%-24%-81%-58%-50%-1% John Day Reservoir 200114,90012,8001,07430090029,974 200430,20011,5001,09417047043,434 +103%-10%+2%-43%-48%+45%

4. Population trends in John Day Reservoir Total Length (inches) Year24-4848-6060+Sum 199018,30042957119,300 199625,4824,0451,00730,534 200127,6681,0771,08729,832 200441,7621,09564343,500 1990 1996 2001 2004

5. Harvest Stock Assessment & Fisheries Monitoring

6. Recruitment Monitoring

7. 1998 1999 2000 2001 2002 2003 2004Year The Dalles John Day 19942,9350 19955,6110 19983,2575,534 1999774,171 20001,1634,019 20011,2575,195 20029414,177 2003102,951 20040294 20050907 All15,25127,248 Juvenile Transplants 2005

8. Recaptures of Juvenile Sturgeon Transplants

9. Hatchery Releases Brood YearBrood Source Collected M : FRelease Date Release Location Release Number 1999 McNary/ Wanapum 6 : 3 -- 0 2000McNary 14 : 2 -- 0 2001McNary 23 : 4 Sep-02John Day454 2002 McNary/ LCR 19 : 2 Apr-03Rock Island12,000 2002 McNary/ LCR 19 : 2 Sep-03Rock Island8,600 2003 McNary/ LCR 17 : 3 Sep-03Willamette40,000

10. Sex and Maturity Correct Classification of Sex & Maturity Using of Plasma Steroids 63% of the non-reproductive females 52% of the non-reproductive males 97% of the reproductive females 87% of the reproductive males

11. Males capable of spawning every year Majority of males are not spawning every year Females appear to be spawning every 2 to 5+ years with the majority of females displaying a 3+ to 5+ year cycle Maturation Cycle below Bonneville Dam

12. Update Snake River Stock Assessments Update Snake River Stock Assessments Adjust Capture Methods for Juvenile Transplants Adjust Capture Methods for Juvenile Transplants Regional Management Plan - Hatchery releases - Set population targets Regional Management Plan - Hatchery releases - Set population targets Future

13. White Sturgeon Mitigation and Restoration Project 198605000