Nearshore Habitat Use by Juvenile Chinook Salmon in Lentic ...

List of Figures
Figure
Page
FIGURE 1.-- Map of the Lake Washington basin showing the major streams and lakes.
Cedar Falls is a natural barrier to anadromous salmonids ........................................ 3
FIGURE 2.—Location of index sites in south Lake Washington used to study the temporal
and spatial distribution of juvenile Chinook salmon .................................................. 6
FIGURE 3.—Relationship (logarithmic function) between the mean juvenile Chinook
salmon density and the shoreline distance to the mouth of the Cedar River in south
Lake Washington, 2003 .............................................................................................. 9
FIGURE 4.—Juvenile Chinook salmon density (number/m 2 ) at four east shoreline sites and
four west shoreline sites in south Lake Washington, 2003....................................... 10
FIGURE 5.—Juvenile Chinook salmon density (number/m 2 ) along two depth contours; 0.4
m (solid line) and 0.7 m (dashed line) at two sites in south Lake Washington, 2003
................................................................................................................................... 11
FIGURE 6.— Juvenile Chinook salmon density (number/m 2 ) at three Mercer Island sites
and two east shoreline sites, Lake Washington, February to June, 2004 ................. 12
FIGURE 7—Juvenile Chinook salmon density (number/m 2 ) at two shoreline sites in south
Lake Washington, February to June, 2002 to2004 ................................................... 13
FIGURE 8.—Map of south Lake Washington displaying the shoreline of Gene Coulon
Park surveyed (bolded line) to determine movements of juvenile Chinook salmon,
March to April 2003 ................................................................................................. 16
FIGURE 9.—Number of marked Chinook salmon observed 1, 7, 15, and 21 days after
release (March 24), Gene Coulon Park, south Lake Washington, 2003................... 17
FIGURE 10—Map of south Lake Washington displaying the overall shoreline area (dashed
lines) where marked Chinook salmon were found for each release group............... 18
FIGURE 11.—Median distance (m, range) moved from release site of two groups of
marked Chinook salmon, Gene Coulon Park, south Lake Washington, 2003.......... 19
FIGURE 12.—Frequency of the distance moved (20-m increments) from the release site
by marked Chinook salmon for each survey date, Gene Coulon Park, south Lake
Washington, 2003 ..................................................................................................... 19
FIGURE 13.—Number of marked Chinook salmon in Gene Coulon Park (south Lake
Washington) that moved away from and towards the mouth of the Cedar River,
March-April 2003 ..................................................................................................... 20
FIGURE 14.—Location of snorkel transects in Seward Park, Lake Washington, March to
July, 2002. Sites 3a and 3b are the completed restoration site, a substrate
modification project finished in December 2001...................................................... 23
FIGURE 15.—Map of south Lake Washington displaying restoration monitoring sites
(Martha Washington Park, Beer Sheva Park, Rainier Beach Lake Park and Marina,
and Shuffleton Power Plant Outflow), and the experimental overhanging vegetation
(OHV) and small woody debris (SWD) site............................................................. 25
FIGURE 16.—Number of juvenile Chinook salmon (number/100 m) observed at night
along three shoreline areas of Seward Park, south Lake Washington, 2003. ........... 26
FIGURE 17.—Monthly abundance (mean number per 100 m of shoreline) of juvenile
Chinook salmon observed during night snorkel surveys of six shoreline sites in
Seward Park, south Lake Washington, 2001-2003................................................... 27
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