WFLHD, Fish Passage Through Steep Gradient Culverts

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Washington State Culverts

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ADG - Average Downstream Gradient
AUG - Average Upstream Gradient
TBCW - Typical Bankfull Channel Width

Culvert Name	Photo	Data	Cost	Cost/ foot	Culvert Slope (%)	Bed Slope(%)	ADG	AUG	Span (in)	Span/ TBCW	TBCW (ft)	Key Design Feature	Culvert Type	Species	Performance Score	Dominant Downstream Morphology	Stream Name	Forest/Park	State	Country	Year Installed
Donaldson Creek	√	√	$80,000	$930	6.5	6.5	4	6	118	2	5	Constructed channel features without SRS	Corrugated Metal Pipe-Round	all aquatic organisms	37	Step-pool	Donaldson Creek	Kaniksu National Forest	WA	United States	2003
Lower Ten Mile Creek	√	√	$120,000	$1,429	0	3	4	4	181	1.3	12	Constructed channel features without SRS	Structural Plate-Pipe	all aquatic organisms	38	Step-pool	Ten Mile Creek	Kaniksu National Forest	WA	United States	2003
Mid Ten Mile Creek	√	√	$130,000	$1,000	2	4	4	4	181	1.5	10	Constructed channel features without SRS	Structural Plate-Pipe	all aquatic organisms	37	Step-pool	Ten Mile Creek	Kaniksu National Forest	WA	United States	2003
Palmer Creek	√	√	$100,000	$1,220	5	5	1	5	142	1.7	7	Constructed channel features without SRS	Corrugated Metal Pipe-Round	all aquatic organisms	37	Riffle-pool	Palmer Creek	Kaniksu National Forest	WA	United States	2003
Slide Creek	√	√	$90,000	$1,286	10	10	4	6	159	1.3	10	Randomly placed stone with SRS	Structural Plate-Arch	salmon	15	Step-pool	Slide Creek	Olympic National Park	WA	United States	1997
Winchester Creek	√	√	$380,000	$5,135	4.1	4.1	3	5	236	1.2	16	Randomly placed stone without sediment retention sills (SRS)	Structural Plate - Pipe	all aquatic organisms	49	Step-pool	Winchester Creek	Kaniksu National Forest	WA	United States	1999

Number of Records Retrieved: 6
Hint: Click on the '√' hyperlink in the Photo, Plan, or Data column to view the available information.

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