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- The Chapman and Gray Watersheds provide
drinking water for 23,000 residents on the Sunshine
Coast. In the centre of this photo you can see the gravel mine at Sechelt.
The white patches in the mountains are logged over areas.
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- The yellow lines shows watershed boundaries.
The green is Tetrahedron Provincial Park.
- Ninety percent of the water supplied by the Sunshine Coast Regional
District comes from the Chapman Watershed.
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- The Sunshine Coast was identified in the 2006 Census as the second
fastest growing area in British Columbia. Our population increased 8.4%
between 2001 and 2006, and our water consumption grew even faster.
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- Chapman Creek is also a fish-bearing waterway. The volunteer-run Fish
Hatchery near the creek mouth raises coho, chinook, pink and chum
salmon. During summer the creek flow is often extremely low.
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- When forest cover is removed, water drains off the slopes faster,
generating much higher peak flows, and becoming more destructive. Stream
walls are scoured, picking up more sediment. Large rain events generate
violent streamflows.
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- Red alder stands are the first to grow in disturbed areas, such as
logging sites, deactivated roads and slides. Alder helps stabilize
slopes, but deciduous growth also generates a great deal of leaf litter
that adds a heavy load of organics to the water. The tea colour of the
water in bogs is typical of organics.
- This is a back channel of Chapman Creek. Note the stand of alder.
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- The water flowing out of the upper watershed may be very clean, but
sediment and organic materials are picked up in the extensively
disturbed lower area. Rises in the levels of water flow cause a rise in
sediment flow. Our water treatment plant has to deal with this.
- This slide in the lower watershed is about 20 years old and is still
active.
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- Chlorine is very effective at treating water, but a mixture of chlorine
and organics in a closed distribution system creates the potential for
organochlorines (carcinogenic substances), so it's important to keep the
organic content of the water as low as possible.
- This is alder regeneration on an old slide site.
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- In a coastal watershed assessment, an area is assumed to be 90%
hydrologically recovered when trees are 20 to 30 feet tall. The SCCA is
not confident in this assessment, and we don't think it is adequate to
meet public health responsibilities for drinking water.
- The area in this photo, taken in April 2007, is deemed to be
hydrologically recovered.
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- Timber licenses are an antique form of tenure wherein the holder of the
license has a right to cut the trees, and when the land has been
harvested it returns to the Crown. The BC government is phasing out
timber licenses and license holders must remove timber by a deadline or
they will have to pay stumpage fees.
- The decision was made that the timber in our watershed has to go. This
was not a public health decision.
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- The original Timber Licenses in our watershed have mostly been logged
out. Those licenses reverted to the Crown and then were reassigned to
Western Forest Products, BC Timber Sales and the Sechelt Community
Forest. The Community Forest may start logging in the watershed in 2011.
- The original Timber Licenses are shown as a dotted line. A very great deal of the damage that
has been done in the lower watershed was accomplished during the
liquidation of this group of timber licenses.
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- Northwest Hardwoods is an additional licensee with the right to log
merchantable stands of alder in our watershed. Since alder prices are
low, they usually wait for other licensees to undertake the expense of
building roads, and then they go in.
- There are also private lands in the watershed owned by Columbia National
Investments. CNI has announced that they are creating a new "resort
municipality.” About 250 hectares of their watershed holdings have
recently been logged.
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- Forty-eight percent of the highest hazard steep slopes in the Chapman
Watershed have already been logged. Of the 250 landslides identified by
Western Forest Products, 85% were caused by logging and roadbuilding
activities. It has been necessary to carry out extensive remediation
work.
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- Research on climate change carried out at UBC indicates that short severe rainstorms are increasing in
both frequency and intensity and will likely cause more massive
mudslides and floods of the kind seen across southern B.C. in 2006.
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- Harsh growing conditions at higher elevations result in forest that is
slow to regenerate.
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- Note that outside of Tetrahedron Park, there is very little old growth
remaining in the Chapman watershed. The mid and lower watershed has been
extensively logged and much of the logging is recent. The logging on CNI
lands does not appear on this map.
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- The SCCA’s inventory of slides is broken down by sub-basins. The main
stem of Chapman Creek is the C-3 sub-basin. Most of the largest slides
have occurred in C-3.
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- The goal and objective of government in managing timber in community
drinking watersheds is: without unduly restricting the flow of timber,
to not materially impact the quality of water coming from a public water
treatment plant.
- This is an extraordinarily low standard for license-holders. Water
quality is secondary to the flow of logs. On the other hand, the
regional district (as water purveyor) is responsible and liable under
the law for water quality and must maintain a water treatment plant that
can deal with whatever raw water quality is coming into it.
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- The Health Act and the Drinking Water Act have standards for water
quality. Other Acts, such as the Forest and Range Practices Act, do not.
- If a timber licensee can demonstrate that they have undertaken "due
diligence" (e.g. constructing roads to current acceptable
standards), they are free of liability for any unanticipated outcomes of
their logging. The liability and expense of any remedial action falls to
the taxpayer.
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- The regional district, as water purveyor, can ask the provincial
government for money for remediation of problems caused by logging, but
if they don't get that money, the cost must be borne by local taxpayers.
- "Unanticipated outcomes" of logging are a huge issue because
our watershed is very unstable and has proved to be unpredictable.
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- It is assumed in coastal watershed assessment plans that timber
harvesting WILL take place--it's merely a question of when. These assessments do NOT ask: "is
logging in a drinking watershed really a good idea in terms of public
health?"
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- The upper portion of the Watershed is now protected in Tetrahedron
Provincial Park. Unfortunately, the fact that this area is undisturbed
becomes a rationale for doing more logging elsewhere.
- Tetrahedron Provincial Park Plateau. This is a high elevation catchment
basin for both watersheds.
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- Tetrahedron Provincial Park was created in 1994 after an extensive
campaign by local residents, who were concerned about protecting the
ancient forests in this fragile high elevation area.
- Edwards Lake -
This is a water source for both Gray and Chapman Creek.
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- Mount Steele - This is the highest part of the watershed. There is still
meltwater here in August.
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- The Chapman Creek Watershed Reserve is highly unstable, and has suffered
an extensive amount of damage in the past, some of which is
irreversible. There is recovery underway but we have not seen any
criteria or standards applied to justify the claim that it is in a stage
of "advanced recovery.
- Further logging will have an immediate impact and a degrading effect on
the quantity and timing of water flows
- Tannis Lake, 1991 -
Gray Watershed
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- Sunshine Coast Conservation Association - July 2007 - www.thescca.ca
- Thank you for your support in conserving our drinking water.
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