Table 9.  Fork length distribution of juvenile chinook sampled below Bonneville Dam, 2004.
																Bonneville Dam
					Number of chinook in millimeters								Mean length	% chf		tailwater	discharge	water
Week	Date	Total		Range	30-39	40-49	50-59	60-69	70-79	80-89	90-100	> 100	chf < 100	< 60mm	60-100mm	(ft.)*	(kcfs)*	temp. (oF)
4	20-Jan	55		38 - 145	4	6	-	-	-	-	5	40	52.6	67%	33%	12.8	136.8	35
4	23-Jan	84		40 - 139	-	4	-	-	-	3	12	65	82.3	21%	79%	12.3	128.9	35
5	27-Jan	36		35 - 135	3	12	-	-	-	-	4	17	53.3	79%	21%	15.0	150.5	35
5	30-Jan	9		35 - 46	4	5	-	-	-	-	-	-	40.0	100%	0%	17.5	171.2	38
6	3-Feb	13		34 - 144	6	5	-	-	-	-	1	1	43.6	92%	8%	15.1	154.3	38
7	10-Feb	46		32 - 125	13	1	-	-	-	1	6	25	87.0	67%	33%	12.3	132.2	38
8	17-Feb	186		35 - 52	52	131	3	-	-	-	-	-	40.9	100%	0%	11.4	130.6	38
8	20-Feb	10		37 - 43	5	5	-	-	-	-	-	-	39.6	100%	0%	15.8	149.5	38
9	24-Feb	52		37 - 114	5	23	2	-	-	1	11	10	56.3	71%	29%	14.9	149.8	38
9	27-Feb	24		37 - 128	6	3	-	-	-	1	4	10	59.4	64%	36%	13.2	150.4	38
10	1-Mar	512		33 - 106	44	434	24	1	-	-	4	5	44.0	99%	1%	12.9	141.5	39
11	8-Mar	22		35 - 69	7	8	-	7	-	-	-	-	49.1	68%	32%	11.5	123.3	40
11	11-Mar	47		37 - 68	5	33	3	6	-	-	-	-	45.9	87%	13%	12.4	144.4	40
12	15-Mar	397		35 - 112	75	222	23	64	11	-	-	2	47.0	81%	19%	12.5	136.2	42
12	18-Mar	173		34 - 114	35	65	4	44	23	-	-	2	52.5	61%	39%	14.3	153.2	43
13	23-Mar	176		34 - 74	66	105	1	1	3	-	-	-	41.0	98%	2%	17.4	147.6	44
13	27-Mar	780		34 - 126	290	325	6	16	21	-	1	5	41.9	94%	6%	13.5	157.2	45
14	29-Mar	295		35 - 76	103	184	4	4	-	-	-	-	40.8	99%	1%	14.6	161	46
14	1-Apr	330		35 - 131	63	203	16	10	18	2	1	17	45.2	86%	9%	14.4	161.5	46
15	5-Apr	1486		34 - 142	118	487	7	3	5	1	-	1	41.9	98%	1%	12.4	137.7	47
15	8-Apr	2292		33 - 79	215	672	18	3	5	-	-	-	42.0	99%	1%	14.6	158.5	48
16	12-Apr	2114		35 - 164	73	528	56	9	5	10	-	2	45.1	96%	4%	13.9	154.9	49
16	15-Apr	1586		34 - 156	183	708	59	12	15	8	-	6	43.9	96%	4%	16.4	201.3	49
17	19-Apr	1531		35 - 152	131	900	151	24	13	21	9	14	45.7	95%	5%	15.7	198.1	50
17	22-Apr	774		35 - 140	113	583	45	2	2	23	5	1	44.5	96%	4%	18.5	210.8	51
18	27-Apr	1753		36 - 142	121	687	71	10	13	20	13	1	45.7	94%	6%	14.5	189.3	51
18	30-Apr	387		36 - 95	59	297	26	1	1	2	1	-	44.2	99%	1%	15.7	199.1	52
19	3-May	1536		34 - 121	108	632	81	8	4	4	3	1	44.7	98%	2%	14.7	191.3	53
19	6-May	943		34 - 96	122	667	139	3	-	1	1	-	44.7	98%	1%	19.2	245.7	54
20	10-May	1295		34 - 142	106	739	184	7	2	10	11	4	46.8	97%	3%	16.6	228.8	55
20	13-May	536		34 - 100	69	370	73	4	1	6	12	1	46.3	96%	4%	20.4	246.3	55
										Totals from March 27 through April 19, April 27, May 3, and May 10 include additional fish that were not sampled.