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  There have been several stories about the de-watering of Garrison Lake. Select the source below to read the reprints.  
 
LakeWise
 
  Curry Coastal Pilot  
  The Oregonian  
  Port Orford News  
     
  April 2002  
 

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.

  Top
 

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
.

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 won’t 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.

     
 

 

 
     
     
 
  Max. Depth
9.6 m
 
  Mean Depth
3.6 m
 
  Sfc. Area
52.3 ha
 
  Perimeter
7.6 km
 
  Volume
1,879,425 m3
 
 

 

Looking east towards Arizona Street bridge April 9th
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Lake looking east from Arizona Street bridge April 10th
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12th street boat ramp taken April 10th
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12th Street boat ramp taken April 16th
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Dock on April 9th looking south from Geer Circle to Pinehurst
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Dock on April 14th looking south from Geer Circle to Pinehurst
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Dock on April 16th looking south from Geer Circle to Pinehurst
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