Lower Granite Dam Smolt Monitoring Program, 2004-2005 Annual Report.
- Washington Department of Fish and Wildlife, Olympia, WA
The 2004 fish collection season at Lower Granite Dam (LGR) was characterized by above average water temperatures, below average flows and spill, low levels of debris. The number of smolts collected for all species groups (with the exception of clipped and unclipped sockeye/kokanee) exceeded all previous collection numbers. With the continued release of unclipped supplementation chinook, steelhead and sockeye above LGR, we can not accurately distinguish wild chinook, wild steelhead and wild sockeye/kokanee from hatchery reared unclipped chinook and sockeye/kokanee in the sample. Wild steelhead can be identified from hatchery steelhead by the eroded dorsal and pectoral fins exhibited on unclipped hatchery steelhead. The numbers in the wild columns beginning in 1998 include wild and unclipped hatchery origin smolts. This season a total of 11,787,539 juvenile salmonids was collected at LGR. Of these, 11,253,837 were transported to release sites below Bonneville Dam, 11,164,132 by barge and 89,705 by truck. An additional 501,395 fish were bypassed to the river due to over-capacity of the raceways and for research purposes. According to the PTAGIS database, 177,009 PIT-tagged fish were detected at LGR in 2004. Of these, 105,894 (59.8%) were bypassed through the PIT-tag diversion system, 69,130 (39.1%) were diverted to the raceways to be transported, 1,640 (0.9%) were diverted to the sample tank, sampled and then transported, 345 (0.2%) were undetected at any of the bypass, raceway or sample exit monitors.
- Research Organization:
- Washington Department of Fish and Wildlife
- Sponsoring Organization:
- United States. Bonneville Power Administration.
- DOE Contract Number:
- 00022085
- OSTI ID:
- 900553
- Report Number(s):
- DOE/BP-00022085-1; R&D Project: 198712700; TRN: US200711%%697
- Country of Publication:
- United States
- Language:
- English
Similar Records
Lower Granite Dam Smolt Monitoring Program, Annual Report 2005-2006.
Lower Granite Dam Smolt Monitoring Program, 2003-2004 Annual Report.