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Orchard Rocks
Conservation Area
WAC
220-16-590: "'Orchard Rocks Conservation Area' is defined
as those waters and bedlands of Rich Passage within a 400-yard radius
of Orchard Rocks day marker." Effective since 5/1/1998.
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IMAGE TO ENLARGE MAP
 
Geographic
Statistics
| Area
Type |
Acres |
Hectares |
| Intertidal |
1.95 |
0.79 |
| Subtidal |
101.65 |
41.14 |
| Total |
103.60 |
41.93 |
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Links
to other imagery about this site
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This view
faces due east, and shows the area exposed during low tide,
and the marker within it.
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| Recreational
Restrictions / Openings |
| Species |
Status |
Comments,
notes... |
| Salmon |
Closed |
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| Trout |
Closed |
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| Bottomfish |
Closed |
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| Shellfish |
Closed |
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| Forage
Fish |
Closed |
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| Unclassified |
Closed |
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| Commercial
Restrictions / Openings |
Species |
Status |
Comments,
notes... |
| Salmon |
Closed |
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| Bottomfish |
Closed |
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| Shellfish |
Closed |
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| Forage
Fish |
Closed |
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| Unclassified |
Closed |
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| Prominent
and unique features |
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Orchard Rocks lies in the eastern portion of Rich Passage,
a high-current channel separating Bainbridge Island and
the eastern portion of the Kitsap Peninsula. The sites
lies in the middle of the channel and consists of rocky
ridges, bedrock, and cobble and pebble habitats that extend
from intertidal depths to depths of 70 feet (mllw). A
series of ridges ranging to several meters in height are
oriented along the long axis of the channel, and the ridges
are separated by exposed bedrock, boulders, cobble, or
coarse unconsolidated material. Much of the exposed bedrock,
boulders, and cobbles are covered with a variety of marine
vegetation including bladed kelps and foliose red algae.
Pterygophora californica is present, especially
growing on the tops of the ridges and in high-current
areas. |
| Description
of fish, bird, and mammal resources at the site |
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The natural bedrock and boulders provide habitats for
rock associated fish and invertebrate species. Copper
rockfish (Sebastes caurinus) and quillback rockfish
(S. maliger) once were common at this site but
now are rare. Brown rockfish (S. auriculatus) are
common as are lingcod (Ophiodon elongatus), red
Irish lord (Hemilepidotus hemilepidotus), buffalo
sculpin (Enophrys bison), striped seaperch (Embiotoca
lateralis), and pile perch (Rhacochilus vacca.
Kelp greenling (Hexagrammos decagrammus), painted
greenling (Oxylebius pictus), cabezon (Scorpaenichthys
marmoratus) are consistently present in the reserve.
Dominant invertebrates include red rock crab (Cancer
productus), spider crabs (Pugettia spp.),
red sea cucumber (Parastichopus californicus),
and orange sea cucumber (Cucumaria miniata).
Harbor seals (Phoca vitulina) frequently visit
the site and are often seen hauled out on the exposed
rocks at low tide. California sea lions (Zalophus
californianus) are also commonly observed at the
site and may be seen hauled out on nearby navigational
buoys.
Diving ducks are common at the site during the winter
and seabirds such as commorants and pigeon guillemonts
(Cepphus columba) are often seen within the reserve.
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| Programs
in place to manage the site |
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WDFW regulations prohibit commercial and recreational
fishing at the Orchard Rocks Conservation Area, and WDFW
manages the site as a fully-protected marine reserve for
non-tribal citizens. The taking of all species of invertebrates
and fishes is prohibited by WDFW regulations.
The island-like nature of Orchard Rocks makes the use
of shore-based interpretive materials difficult. Signage
at the site is planned but will require altering the
intertidal habitat to include the footing for the signs.
The site and its restrictions are listed in the WDFW
sportfishing pamphlet and a detailed description will
be presented in informational materials on marine reserves.
WDFW Enforcement Officers patrol the waters of the conservation
area.
Most of the bedlands in the reserve were withdrawn for
recreational uses by the Department of Natural Resources
on behalf of the nearby State Park, while a small portion
of the reserve bedlands are leased to the adjacent private
aquaculture facility.
Volunteers proposed and sheparded the site for inclusion
in WDFW's marine reserve system, however, there is currently
no organized volunteer activity at the site.
Orchard Rocks serves as an important study site in WDFW's
marine reserve monitoring program. The site was surveyed
for rockfish abundance during 1986 and 1987 for a special
study of habitat affinities. The transect sites and
methodology served again in a more comprehensive study
of fish communities at a fished site from 1995 to 1997.
Since the site became a conservation area in 1998, WDFW
scientists continue to conduct visual surveys using
scuba diving in order to assess the fish populations
within the reserve. Fish are identified, counted, and
measured along four permanent transect corridors. These
observations provide measures of fish density, size
distributions, and reproductive effort that can be compared
over time and with similar surveys conducted at nearby
fished areas. Beginning in 1999, a nearby and similar
rocky habitat at Point Glover was added as a fished
site for reserve comparisons. |
| Issues
of concern |
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Orchard rocks is a remote site and not easily patrolled
or signed. Therefore, the site may be more vulnerable
to poaching than shore-based reserves.
The shallow and rocky nature of the site leaves it vulnerable
to vessel groundings and to the accumulation of derelict
fishing gear. Derelict gill nets have been observed
in the conservation area. A navigational aid is fixed
to the highest point of the rocks and minimizes the
chances of vessel groundings, but the surrounding area
is a high traffic area frequented by Washington State
ferries, some of the largest naval vessels in the world,
and by recreational and commercial vessels.
A large commercial aquaculture facility consisting of
net pens containing Atlantic salmon is located at the
eastern periphery of the conservation area. The bedlands
in the eastern most portion of the Conservation Area
are under lease from the Department of Natural Resources
to the private facility. These bedlands, which are now
within the Conservation Area, are used for anchoring
the net pens. There are no known impacts to the site
from net pen operations historically. Commercial net
pen operations could cause negative impacts to the reserve
when catastrophic releases occur, by enhancing fish
waste in the passage, or by the flow through of antibiotics
into the marine environment. Just to the south of Orchard
Rocks is an experimental aquaculture facility that potentially
could cause similar problems in the area.
Orchard Rocks is located several miles east of Bremerton,
Sinclair Inlet, and the Bremerton Naval Shipyard. The
inlet is documented to have high levels of toxic contaminants
in the sediments. Whether these are transported to Orchard
Rocks is unknown. Another naval facility to the southwest
transfers fuel to naval vessels and poses the threat
of oil spills to the reserve. |
| Performance
measures |
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Since Orchard Rocks has a long history of consistent monitoring,
performance measures can be established on the basis of
fish community parameters. Rockfish abundances are now
lower than they were in the mid-1980s. Having abundances
recover to those levels is a natural management objective
for the site. |
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