info@mjbayly.com

WDFW & Ecology 2004: HSI Coho Spawning Velocity

mbayly
View all records in the stressor response library
Species Common Name
Coho Salmon
Latin Name (Genus species)
Oncorhynchus kisutch
Stressor Name
Velocity
Specific Stressor Metric
Water Velocity (mean column velocity at redd)
Stressor Units
m/s
Vital Rate (Process)
Habitat Suitability Index

Life Stage

Season
Fall-early winter (spawning season)
Activity
spawning
Geography
Quinault River tributary, Washington
Detailed SR Function Description
Recommended spawning velocity preference curve for Coho Salmon used in Washington PHABSIM/IFIM instream flow studies. Suitability is 0.40 in still to slow water (≤0.08 m/s), peaks at ~0.32 m/s, and declines to 0 at ~1.19 m/s. Plotted velocities converted from ft/s to m/s; the 99 ft/s terminal value (0) is omitted.

Stressor-response relationship data sourced from: FIGURE 4b. Coho Salmon Spawning Velocity Preference — Recommended velocity preference curve (p. 44).
Function Derivation
Recommended (smoothed, expert-adjusted) curve derived from observed redd velocity use relative to availability.
Transferability of Function
Developed for western Washington coastal streams; consult WDFW/Ecology before local application.
Source of stressor Data
Redd microhabitat measurements (2 studies, 30 redds) compared with available habitat, following WDFW–Ecology instream flow study guidelines.
Function Type
continuous
Stressor Scale
linear
References Cited
Washington Department of Fish and Wildlife & Washington Department of Ecology. (2008). Instream flow study guidelines: Technical and habitat suitability issues including fish preference curves (Publication No. 04-11-007; updated April 5, 2004; error correction update February 12, 2008). Washington Department of Fish and Wildlife.
Citation Link
Beecher et al., 2002
Images
coho spawn velocity
Stressor Response csv data
WDFW 2004 HSI Coho Spawning Velocity.csv (171 bytes)
Raw Stressor Values Scaled Response Values 0 to 100 SD low.limit up.limit
0 40 0 0 100
0.076 40 0 0 100
0.32 100 0 0 100
0.549 81 0 0 100
0.808 29 0 0 100
1.189 0 0 0 100

Stressor Response Chart

Mean Response
±1 Standard Deviation
Upper/Lower Limits
Download PDF Export this profile