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| BIG
SILVER CREEK (HARRISON LAKE) WATERSHED |
|
| Big
Silver Creek (Harrison Lake) Watershed Details |
|
Big Silver Creek |
Watershed
Map Code: 110599000 |
4th
Order
|
| Wild
Stock Trend: |
Unknown,
likely declining (on account of low productivity) |
Wild
Stock Status:
|
Special
Concern |
| Class: |
Augmented
(5 TO 10K fry) |
| Recent
Wild Steelhead Escapements: |
<
50 Winter Run |
| Angling
Regulations: |
Wild
Steelhead Catch and Release (Very few fish ever reported in
catch, none reported in 2001.) |
Estimated
Steelhead Capacity & Returning Adults (assuming 13% marine
survival):
EXISTING
HABITAT: 9 km accessible length, Very low productivity - biomass
80-g/unit limits potential Sediment problems, 24% pf watershed
has been logged, low summer flows
HABITAT
RESTORATION TO DATE
- Some
work done under WRP and by DFO.
STEELHEAD
OBJECTIVES AND STRATEGIES
- Monitor
any fishing activity and wild stock levels
- Pursue
opportunities for habitat restoration.
IDENTIFIED
RECOVERY OPTIONS
- Undertake
gravel placement.
- Install
well-anchored LWD complexing and refuge alcoves;
- Initiate
an annual stream enrichment program.
NOTES:
Consult records re restoration and stocking to date. This
is a much bigger system than "Creek" would indicate and supports
an improving sockeye escapement. However SHQ shows very little
reported steelhead angling.
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| Big
Silver Creek (Harrison Lake) Adult Assessment |
|

PDF
version (40KB PDF, opens in new browser window)
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|
| Big
Silver Creek (Harrison Lake) Watershed Map |
|

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|

| SILVERHOPE
CREEK WATERSHED |
|
| Silverhope
Creek Watershed Details |
|
Silverhope Creek |
Watershed
Map Code: 100112900 |
5th
Order
|
| Wild
Stock Trend: |
Relatively
Stable |
Wild
Stock Status
(Winter Run): |
Special
Concern |
Wild
Stock Status
(Summer Run) |
Conservation
Concern/Routine Management |
| Class: |
Wild
(Previously stocked with Steelhead fry to supplement natural
production but was discontinued many years ago.) |
| Recent
Wild Steelhead Escapements: |
100
- 300 Summer Run, Winter Run Not Assessed - believed to be
very small |
| Angling
Regulations: |
Wild
Steelhead Catch and Release, Bait Ban, Fly Fishing upstream
of Silver lake (Aug./Sept.) , Area closures |
| Mean
Annual Effort: |
Long
term 1968-1996: 486 / Recent 1997-2001: 241
Best 5 years 1968-1972 mean annual effort: 1209 |
| Mean
Annual Catch: |
Long
term 1968- 1996: 146 / Recent 1997-2000: 191 |
Estimated
Steelhead Capacity as Returning Adults (assuming 13% marine survival):
- 3100
smolts /400 adults (based on a review of existing information).
- Conservation
Concern Level @ 30% of capacity is approx. 120 adults
| Existing
Habitat: |
| Watershed
area (km2): |
350
|
  |
Comments |
| Mean
annual discharge (m3/s): |
14.4
|
|
Lake,
high productivity below - biomass 300 g/unit, parr habitat
limited by few large woody debris and boulder reach extent.
Logging damage in upper watershed, road in riparian area has
resulted in bank armoring for flood protection with resulting
impacts on stream morphology and steelhead habitat. Major
damage from flooding in 1989/1990 in upper watershed above
lake - streambed is very mobile. |
| Summer
baseflow (%mad) |
31%
|
|
| accessible
length (km): |
19
|
|
| Productivity
(below Silver Lake): |
high
|
|
HABITAT
RESTORATION TO DATE
- WRP
- off-channel work in stream above lake
STEELHEAD
OBJECTIVES AND STRATEGIES
- Return
/ maintain wild summer run stocks at approx. 300 adult return
or better supporting 500 rod-days of effort.
- Upgrade
existing summer steelhead stock assessment and obtain basic
stock information on winter steelhead. (Consider using the stable
Silver lake outlet as a smolt and adult enumeration location.
- Ensure
Fraser River net fisheries are conducted as selectively as possible
to reduce SH by catch
- Develop
a management plan and coordinate efforts to protect and rehabilitate
habitats and set and enforce protection standards in consideration
of very heavy general recreational use within the floodplain
of upper Silverhope.
- Lacks
salmon spawning carcasses in upper watershed to provide marine
nutrients, check enrichment possibilities.
IDENTIFIED
RECOVERY OPTIONS
- Needs
Well-anchored LWD complexing and refuge areas to provide pool
habitat in channelized sections;
- Remove/relocate
road in riparian and channel areas of floodplain.
NOTES:
System is performing reasonably well at present. Any future enrichment
and restoration activities should be integrated with general watershed
recovery work required by forestry companies. By catch has been
equal to returns according to past CWT data.
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| Silverhope
Creek Watershed Adult Assessment |
|

PDF
version (40KB PDF, opens in new browser window)
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|
| Silverhope
Creek Watershed Juvenile Assessment |
|
  
  
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|
| Silverhope
Creek Watershed Map |
|

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|

COQUIHALLA
RIVER
WATERSHED |
|
|
Coquihalla River Watershed Details |
|
Coquihalla River |
Map
Code: 100115400 |
5th
Order |
| Wild
Stock Trend: |
Fluctuating
with Some Recovery (2000,2001) |
Wild
Stock Status
(Winter Run): |
Special
Concern |
Wild
Stock Status
(Summer Run): |
Conservation
Concern/ Routine Management (Last 2 years) |
| Class: |
Augmented
(Stocked from 1978 to date with 24K Coquihalla summer run
smolts raised at Abbotsford and Chehalis) |
| Recent
Wild Steelhead Escapements: |
200
- 500 Summer Run, <50 Winter Run (23 this year) |
| Angling
Regulations: |
With
the exception of a 6-week opening in 1996, river has been
closed to summer steelhead angling since 1993; catch and release
of wild fish from Nov 1 to April 31 for winter steelhead angling
below lower railway tunnel, closed year-round further upstream
|
| Mean
annual effort: |
Long
term 1968-1996: 783 / Recent 1997-2001: 168
Best 5 years 1968-70, 87, 90 : 1368 rod-days |
| Mean
Annual catch: |
Long
term 1968- 1996: 236 / Recent 1997-2001: 156 |
Estimated
Steelhead Capacity & Returning Adults (assuming 13% marine survival):
- 700-summer
run and 300 winter run adults (based on a review of existing
information and current conditions).
- Conservation
Concern Level @ 30% of capacity is approx. 210 summer run and
90 winter run adults
| Existing
Habitat: |
|
  |
|
| Watershed
area (km2): |
741
|
|
Comments |
| Mean
annual discharge (m3/s): |
33
|
|
Upper
22km summer run habitat; moderate productivity - biomass 220
g/unit. Major highway and pipeline corridor, urbanization
in lower reaches below Coquihalla Canyon Park, lacks large
wood and pools. Periodic sediment events beginning in 1985.
Extensive floodplain development near the confluence with
the Fraser River has destroyed habitat. |
| Accessible
length (km): |
33.5
|
|
| Productivity: |
moderate
|
|
SPECIAL
HABITAT PROTECTION REQUIREMENTS
- Ensure
sensitive logging practices are followed consistent with current
standards and codes.
- Evaluate
past mitigation works designed to alleviate highway and pipeline
corridor impacts - rebuild or modify as necessary and develop
and implement an improved habitat protection and restoration
plan for the watershed.
- Reduce
flood plain incursions and minimize damage from flood control
activities.
- Minimize
sedimentation impacts from transportation corridor construction
activities.
HABITAT
RESTORATION TO DATE
- Mitigation
works built to offset highway impacts - these have not been
durable.
- LWD
placements and restructured off-channel habitat on Karen Creek.
STEELHEAD
OBJECTIVES AND STRATEGIES
- Rebuild/maintain
a minimum 300 steelhead adult return capable of supporting a
quality angling experience through augmentation as required
and by restoring habitats and evaluating and fine-tuning regulations.
- Prepare
to introduce limited access angling in 2003 directed at summer
run fish subject to an in-season assessment of summer run abundance.
- Continue
to limit brood stock capture to 15 summer run pairs and ensure
first priority is to stock Coquihalla for fishery augmentation
with any surplus available for transfer to Chehalis.
- Upgrade
existing stock assessment on both summer and winter runs.
- Conduct
Fraser River net fisheries as selectively as possible to reduce
steelhead by catch
IDENTIFIED
RECOVERY OPTIONS
- Provide
better-anchored large wood to create pool habitats.
- Provide
off channel stable habitats with spawning gravels.
- Conduct
an annual stream enrichment program.
- Institute
a guardian program to reduce poaching.
NOTES:
River commercial net fisheries have been significantly curtailed
in recent years but FN net fisheries directed on CN overlap Coquihalla
Summer Steelhead run timing in Fraser River.
The
existing augmentation program has been carried on primarily to
provide consistent production through periodic sediment events
and to offset interceptions in net fisheries. If these impacts
can be minimized, augmentation can be used primarily to support
angling. Surplus returning hatchery adults should be available
in many years to support a quality angling experience. (An in-season
assessment of summer run abundance would be required prior a fishery
opening.) Access controls are recommended and full protection
of wild summer run fish from potential higher than usual catch
and release mortality also needs to be in place. Access permits
could be utilized to raise some revenues for a guardian program
and/or steelhead assessment.
top
|
| Coquihalla
River Watershed Adult Assessment |
|

PDF
version (40KB PDF, opens in new browser window)
top
|
| Coquihalla
River Watershed Juvenile Assessment |
|
  
top
|
| Coquihalla
River Watershed Map |
|

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|

©
BC Conservation Foundation 2003-2006 3-1200
Princess Royal Avenue Nanaimo BC V9S 3Z7 Tel. 250.716.8776
Fax 250.716.2167 www.steelheadrecoveryplan.ca
info@steelheadrecoveryplan.ca |