Table 5C.2. Survival rates of naturally produced Snake River spring and fall chinook under various management strategies.

	MANAGEMENT STRATEGY		SURVIVAL RATE									SPAWNER/ SPAWNER RATIO^a
			Life History Stage or Source of Mortality								Lifetime Total (10^-3)
			EggÆ smolt	Juvenile passage	Early ocean	Ocean natural	Ocean harvest	In-river harvest	Adult passage	Pre-spawning
*Spring Chinook*
	Historical		.25	.80	.16	.50	1.00	.70	.95	.95	10.11	25.25
	Recent		.05	.18	.16	.50	1.00	.90	.70	.85	.39	.965
	NMFS 1995		.045	.24	.16	.50	1.00	.90	.70	.85	.46	1.16
	Tribal Strategies
		7-Yr	.05	.30	.16	.50	1.00	.88	.70	.85	.63	1.57
		25-Yr Option 3	.10	.71	.16	.50	1.00	.61	.91	.85	2.69	6.74
*Fall Chinook*
	Historical		.50	.70	.20	.50	1.00	.80	.85	1.00	23.80	34.4
	Recent		.50	.07	.20	.50	.78	.63	.42	1.00	.72	1.24
	NMFS 1995		.50	.19	.20	.50	.79	.85	.55	1.00	3.51	6.04
	Tribal Strategies
		7-Yr	.50	.19	.20	.50	.85	.564	.55	1.00	2.50	4.30
		25-Yr Option 3	.50	.36	.20	.50	.85	.28	.83	1.00	3.56	6.13