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There have been several stories about the de-watering
of Garrison Lake. Select the source below to read the reprints. |
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LakeWise |
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Curry
Coastal Pilot |
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The
Oregonian |
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Port
Orford News |
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April 2002 |
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LakeWise
Winter
2001
GARRISON
LAKE: RECENT SALINITY CHANGES
by
MARK ROSENKRANZ
Garrison Lake has
gone through some dramatic changes over the past ten years. From the
surface the lake does not look much different. However, starting about
three meters down, the lake is very unique.
Prior to 1992 outflow from the wastewater treatment plant was discharged
into the lake. Accelerated eutrophication of the lake led the city
of Port Orford to explore options for wastewater disposal. In 1991
a dune disposal system was approved and built in the foredune separating
Garrison Lake from the ocean. The wastewater disposal system was effective
in keeping approximately two million gallons of effluent from the
lake per day.
An El Nino storm event during the winter of 1997-1998 brought unusually
high seas and strong southerly winds that eroded the foredune separating
Garrison Lake and the ocean. Along with washing most of the waste
disposal piping out to sea, the ocean washed over the now reduced
dune and filled the bottom of Garrison Lake with seawater. A study
by Richard Petersen from Portland State University in September 2000
found that the conductivity of Garrison Lake increased from 6597 µS/cm
at three meters to 38,056 µS/cm at four meters (figure
1). Ocean water conductivity is generally around 43,000 µS/cm.
Based on a bathymetric survey in 2001 by Mark Rosenkranz at Portland
State University the total volume of Garrison Lake is 1,879,000 m3.
The volume of salt water starting at three meters is 637,000 m3
or roughly a third of the lake volume (figure
2).
The consequences
of such a large amount of salt water in the lake is a very stable
chemolimnion that will not easily mix with the surface water. Extended
stratification may lead to hydrogen sulfide production in the chemolimnion
that could be released if the stratification were destabilized by
a large wave from the ocean or another high-energy event.
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Curry
Coastal Pilot
Sat. April 13, 2002
ILLEGAL LAKE BREACH KILLS FISH
Nearly 5,000 trout were washed out to sea when Garrison
Lake was breached last week.
By
BILL LUNDQUIST
PORT ORFORD - An illegal breach of Garrison Lake Monday night destroyed
thousands of rainbow trout, said Oregon Department of Fish and Wildlife
(ODFW) Biologist Russ Stauff Friday.
In recent weeks, ODFW had stocked the lake with 5,000 rainbow trout
for what has traditionally been a children's fishery. Stauff said
those fish have been lost, along with bird and amphibian nests in
a vast area of wetland. "It
was a pretty destructive act," he said, "extremely destructive.
A public resource was just hammered." He said he would not
waste thousands of dollars stocking the lake with fish again until
the people of Port Orford could assure him that it would not be
illegally breached again. As for issuing state permits to legally
breach the lake in times of flooding, Stauff said Monday's act "has
completely changed my take on it."
Stauff believes the lake was breached with shovels by two or three
homeowners who had been threatened by rising waters during the winter.
"It is highly likely that it was breached deliberately,"
said Stauff. "It is exceedingly unlikely it was a natural breach."
He said there had been no large storms lately to raise the lake
level, or wave action to break through the dunes standing between
the lake and the sea.
By Friday, the breach appeared to be about the same size and volume
asPistolRiver. State parks officials were unavailable for comment
Friday, but Stauff said they also believe it was an illegal breach.
Port Orford City Administrator Martha Weaver said someone called
to say there were two people with shovels seen at the south end
of the lake. She said people are always trying to dig the lake out
with shovels, but have little success. She said there are rumors
around town, but the city does not know if the breach was natural
or man-made.
Stauff said, "I was never comfortable with breaching the lake
in the first place. A limited number of homes were affected by the
flooding." He said most of those homes were originally built
with lower floors open to the lake. As the lake went through a natural
cycle of lower water, owners framed in the open areas and built
rooms. When the lake began to rise again, the owners "made
a lot of noise." In what he called a "knee-jerk reaction,"
state agencies issued permits for breaching, with the requirement
that it be done no later than the middle of February. By the middle
of April, he said, the lake had been stocked with thousands of dollars
worth of fish, and bird and amphibian nests were well established
in the wetlands.
Stauff said a profile of the lake, done byPacificStateUniversity
(Actually Portland State University), showed there was 9 feet of
fresh water on top of heavier salt water. He said all the fresh
water has now been drained out of the lake, along with fresh water
in the wetlands along the shore. "Those people really crossed
a line with me," said Stauff. "I was going along with
it (the breaching permits), but this is a big resource damage issue."
He said if the breach had been made in the winter, the lake might
have had time to refill itself. "It won't fill quickly now,"
he said. "People will be looking at a decaying mud-flat for
some time."
Regardless of the cost of the damage, however, Stauff said little
can be done to the perpetrators. He said none of the state agencies
involved have an enforcement mechanism in place for such a crime.
"This is different from poaching elk," he said. "It
falls between the cracks. It is difficult for us to quantify the
damage. We can't do much." He said if those who caused the
damage can be identified, and no one in Port Orford is willing to
name names, the most state parks will do is send them a letter asking
them not to do it again.
"This just appalls me," said Stauff. "It rests with
the people of Port Orford. If they like destroying natural resources,
if they like looking at a decaying mud-flat, then by not saying
anything they are telling the homeowners they like what they did."
He said it is common knowledge who breached the lake, because the
same group of homeowners had been trying to raise funds to rent
heavy equipment to make the breach. He said when the lake is high
enough, however, a breach can be started with a child's spade. Stauff
said previous conversations with people in the community led him
to believe most people did not think the flooding was a serious
problem.
He said the geological evidence shows GarrisonLakehas cycled over
the years between being an open bay, a saltwater lagoon and a freshwater
lake. He said if the tides and storms were right, the ocean could
enter through the breached area, threatening all the homes on the
lake for the benefit of a few. The only thing Stauff can do is to
save the taxpayers' money by not restocking the lake. He said having
no lake, and no fish in it, may hurt the local tourism economy,
but he was more concerned about providing "an angling opportunity
for the area's youth." "Just because some guys with homes
in the wrong place did this," said Stauff, "the kids won't
have that fishing opportunity."
Weaver said the breaching didn't cause a lot of damage in the city.
She said the sudden outflow of water from the wetlands through the
bridge on Arizona Street cracked the road, but not as seriously
as it used to before the bridge was rebuilt. She was also concerned
about what would happen to the wetlands. Weaver said it looks like
the city will get a grant from the U.S. Department of Commerce's
Economic Development Agency for an engineering study of the unstable
dunes between the lake and the ocean. She said the city is still
looking for some of the $16,000 needed to match the grant. The entire
project will cost more than $100,000 and will utilize the best experts
on dunes.
Weaver said the city hopes the study will help identify a permanent
solution to the lake flooding, and will allow the city to update
its water master plan. GarrisonLake had been one of Port Orford's
main water sources before it turned mostly saline. Weaver said the
city is looking for a new water source. She said the city is also
progressing on a new sewer outfall. The old one was destroyed years
ago by El Nino storms. She said the city chlorinates its sewage,
so it is "not a huge health hazard." That chlorine, however,
could be toxic to sea life beyond the mixing zone, so a meter is
being installed to study the currents for dilution. The city may
end up having to use ultraviolet light, like the City of Brookings,
which costs a lot, or it may have to de-chlorinate its treated waste
chemically. Weaver said the best deal the city has found for a new
sewer outfall so far would supply half of the needed money through
a grant, and half with a loan.
|
| The
Oregonian
April 17, 2002
QUESTIONS
FLOOD IN AFTER LAKE TURNS UP EMPTY
By
WENDY OWEN
PORT ORFORD --
No one saw it happen, but a "whooshing" sound alerted neighbors
that Garrison Lake was draining into the ocean, taking with it nearly
3,000 hatchery trout and killing untold numbers of wildlife.
Some in this tiny coastal town think a few people with shovels slipped
out at midnight to open a hole in the dune separating the lake from
the Pacific, but others contend it was a natural breach.
Residents who live in upscale homes around the lake have fought with
the city and county about its level since 1998 when El Nino storms
shifted the sand dunes and cut off the creek that drained the lake
naturally. Since then, winter storms fill the lake to overflowing
and it occasionally floods nearby houses and property. The 85-acre
lake sometimes breaches naturally, but other times needs a little
help.
Residents have grumbled, but so far they've played by the rules and
applied for permits to release lake water. The state never allows
water to be released later than February. A spokesman for the Oregon
Department of Fish and Wildlife, which lost roughly $6,000 worth of
hatchery fish, is sure someone intentionally drained the lagoon April
8. "I'm pretty angry," said Russ Stauff, a state biologist.
"I won't stock any more fish there until I'm convinced this won't
happen in the future. If it takes 10 years, I won't put another fish
in that lake. I can guarantee that."
One of county's few lakes Garrison Lake, once the city's water source,is
also one of the few lakes in Curry County. The Fish and Wildlife Department,
interested in developing a place for children to fish, planted about
2,500 12- to 14-inch rainbow trout in the lake this spring. Workers
also stocked nearly 400 trophy trout in March, each weighing about
5 pounds. "It was instant mortality for all the fish and probably
for the amphibians and freshwater vegetation," Stauff said.
The bottom two-thirds of Garrison Lake is saltwater and the upper
9 feet is freshwater, Stauff said. When the lake drained, the freshwater
went first, leaving a puddle of saltwater that killed the trout and
reptiles. Nesting waterfowl and other wildlife such as otters also
lost their habitat, Stauff said. "It would be the equivalent
of burning your house down," he said.
Recently legally breached In January, several homeowners collected
$1,700 and received an emergency state permit to breach the lake with
a backhoe. At the time, the water was only a few feet from entering
Port Orford's sewage ponds, which would have leached sewage into Garrison
Lake, said Ralph Donaldson, city councilor and lakeside homeowner.
"They saved the houses and the sewer plant," he said.
The neighbors opened the lake a second time in February and the lake
naturally breached in late February.
Stauff said draining the lake before Feb. 15 is not as damaging because
animals are not nesting and the lake has not been stocked with fish.
The lagoon also refills quickly during winter storms.
William Rebhahn, a lakeside resident, said he's tired of the lake
killing his trees and cracking the foundation of his house, but he
didn't breach it last week.
"I heard it go," he said, describing it as a whooshing sound.
Rebhahn said it's impossible to breach the lake with shovels and he
thinks Mother Nature opened a channel. Other residents say when the
water is high, it would not take too many shovels of sand to start
a channel and the force of the lake's water would do the rest. "Now
you need a conspiracy," Rebhahn said. "This is absurd."
Linda Houck, one of the homeowners who legally breached the lake,
argued with Stauff's contention that only a few homes are affected
by the high water. "These (state) people have no clue what's
going on out here," she said. Houck, who also thinks the lake
breached naturally, wants someone to maintain the water at a consistent
level as it was before 1998. The city and county have opened channels
a few times in the past, most recently in 2000. Houck has offered
to operate a weir if the city finds it is feasible.
OregonParksand Recreation is investigating the illegal breach but
so far has no leads. The maximum civil penalty for such a violation
could reach $10,000.
You can reach Wendy Owen at 541-751-0516 or wowennews@aol.com.
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| Port
Orford News
,April 17, 2002
BREACHED
WITHOUT A PERMIT, GARRISON LAKE WATER LEVEL PLUMMETS
By
MOLLY WALKER
"It's pretty apparent the take was deliberately breached,"
stated Oregon Department of Fish and Wildlife (ODFW) biologist Russ
Stauff following the dramatic drop of the water level at Garrison
Lake between Monday, April 8 and Tuesday, April 9. Stauff pointed
out that when the lake was breached this time there was no rain, the
ocean was flat and the take was not that full.
"It didn't happen naturally," Stauff said, adding he believes
that some people in the Port Orford area have an idea of who breached
the lake.
Last Tuesday, Port Orford City Administrator Martha Weaver said the
lake was about as low as it could get, although by Monday, April 15,
Weaver reported that the water had come back in some.
Weaver has heard that there was someone out at the lake opening with
a shovel, but there has been no one who has come forward to say they
breached the lake as of Monday.
Andy LaTomrne, area manager for the Oregon State Parks located out
of CoosBay, pointed out that the breaching was done without a permit
from state parks. "We don't 'know who did it but we never issued
a permit this time," LaTomme stated.
Following rising lake levels, the lake had been breached in December
2001, an act authorized by a permit issued by State Parks. However,
that permit expired in February. LaTomme mentioned that ODFW doesn't
sign on to the issuance of a permit after February because of the
danger of the loss of wildlife and habitat. Stauff said that his department
told the State Parks that ODFW didn't want any breaching after February
15.
When asked about any consequences for the breaching, LaTomme said
there are some Oregon Administrative Rules which may have been broken.
"There could be some violations," LaTomme stated. Although
he hadn't visited the lake himself, he had been briefed by Brian Herczeg,
Coastal Land Use Coordinator.
'The damage was done to the lake, not to the beach. That is out of
our venue, we don't have control of that," LaTomme stated. "It's
a terrible thing to do. That's why the permit has very tight guidelines
- to mitigate that type of damage."
Stauffhopes to get the people of Port Orford stirred up over this
breaching. "It's illegal to kill non-game species," Stauff
stated, but added that this act falls into a gray area - completely
outside the norm. "For one thing, nobody's come forward - there's
no proof of who did this," Stauff explained.
Staufffeels it's time for the community to address the lake and its
management. "We were making a big deal out of saving these four
homeowners; in hindsight that was a pretty ridiculous thing,"
Stauff stated. "The damage is done. What I want is for people
to realize this is totally unacceptable, and wont do it again.
Let the lake do what it does."
Stauffbelieves it's time for the homeowners who have been affected
by rising lake levels to fix their own problems. "We're going
to take a more vocal approach on this when they want to permit it
(the lake opening) next winter," Stauff stated. "I'm hoping
enough people in Port Orford decide what they want out ofGarrisonLake."
Although Stauff would like to see some action taken against the person
or persons who breached the lake, he is more interested in how Garrison
is managed in the future. "We have few of these lakes - it's
a pretty unique lake for a coastal area," he explained. He doesn't
believe there is a technological fix to regulate the level of the
lake.
Losses due to the breaching are hard to estimate. Stauff stated that
there were 5000 fish scheduled to be planted into Garrison Lake, about
3000 of those which were already planted, trucked over from Sumner
Lake. Planted fish include 400 trophy fish from the Elk River Hatchery,
which took one and one-half years to grow.
"I won't stock the lake again until I'm comfortable this won't
happen again," Stauff pointed out. "It might be for one
year, or ten years."
Fish lost equates to thousands of dollars, but Stauff points out that
is the minor part of the damage. "What you can't quantify are
the wetlands," he stated. Amphibians, pond turtles, shore birds,
waterfowl and other wildlife have all been impacted. As it is spring,
many were nesting. "In reality, these guys impacted a tremendous
amount," Stauff stated.
The biologist explained that with the unique nature of the lake, prior
to the unpermitted opening last week, there was nine feet of fresh
water
- Approximately one-third of the water - on top of the two-thirds
of the salt water which sinks to the bottom.
"It doesn't "mix," Stauff pointed out. "All the
fresh water was sucked off when it was breached. That resulted in
instant mortality for fresh water fish."
"This
is a major impact," Stauff emphasized.
Weaver said that it looks like the city will get an Economic Development
Agency grant to study the lake, however, all the matching money is
not in place. "I'm hoping some of the residents will pitch in
with matching. |
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Max.
Depth |
9.6
m |
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Mean
Depth |
3.6
m |
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Sfc.
Area |
52.3
ha |
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Perimeter |
7.6
km |
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Volume |
1,879,425
m3 |
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