1. Fall Chinook Management Measures
Flow
Temperature Control
Transportation
Spill
Project Modifications

2. Summer Flow Management
Goal is to refill all storage project to full pool by June 30.
Draft reservoirs within draft limits to increase river flow during the summer months.

3. Summer Flow Management Volumes
Storage Reservoir
Draft Limit from Full (feet)
Draft Volume (kaf)
Libby
20 (10)
891 (455)
Hungry Horse
467 (246)
Grand Coulee 10
789
Banks Lake 5
130
Dworshak 80
1,200
Upper Snake
487
Canadian water
1,000
Total
4,964 (4,307)

4. Snake River Fall Chinook Salmon Research Summary 1992-2005

7. Conclusions (Connor et al. )
—Survival is influenced simultaneously by flow and temperature
— Summer flow augmentation
increases flow and decreases
temperature
—Summer flow augmentation increases
survival

8. Most fish have been transported
Transport evaluation with spill program is a high priority
Less in recent years

10. Project Modifications
Initial results of surface bypass studies indicate surface passage is an effective passage route for subyearling migrants.