Upper Chehalis Culvert Statistics

When culverts are evaluated they fall into the categories of impassable, passable or unknown, based on the ability to pass a 6 inch trout. If a culvert is rated impassable it is not necessarily a total barrier to fish passage. It can be causing a delay or limiting a certain lifestage of the salmonid. A passable culvert allows the 6 inch fish to pass the culvert at all times. Unknown culverts were unable to have barrier status determined.

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Culvert Barrier Status YEAR	Impassable     2004	Passable    2004	Unknown    2004	Totals    2004	Corrected      2005
Newaukum Watershed	53	33	13	99
Skookumchuck Watershed	70	26	9	105	3
South Fork Chehalis	48	50	1	99	1
Upper Chehalis Watershed	43	28	1	72
Middle Chehalis Watershed	115	24	13	152	2
Centralia Chehalis         Area Tributaries	39	33	10	82	1
Lincoln and Scammon      Creek Watersheds	30	42	4	76
Independence and Garrard        Creek Watersheds	40	25	3	68
Scatter Creek and Prairie        Creek Watersheds	9	13	3	25