Tag: dunes

Sea Levels Threaten Coastal Towns (Part One)

  • The boardwalk in Ocean City, Maryland. Before beach replenishment, you could get your feet wet standing underneath the boardwalk. Now, as you can see, the water is 200 feet away. (Photo by Tamara Keith)

It’s beach weather – and along the mid-Atlantic one of the most popular beaches is Ocean
City, Maryland. For years, engineers have been battling back the ocean to save the beach
and the town. And as Tamara Keith reports, that fight is only going to get tougher and
more expensive if predictions of sea level rise from climate change become a reality:

Transcript

It’s beach weather – and along the mid-Atlantic one of the most popular beaches is Ocean
City, Maryland. For years, engineers have been battling back the ocean to save the beach
and the town. And as Tamara Keith reports, that fight is only going to get tougher and
more expensive if predictions of sea level rise from climate change become a reality:

When the sea level rises, Ocean City feels it. It’s on the front lines – a barrier island on
the edge of the Atlantic.

(sounds of water)

Terry McGean is the city engineer for a town he describes as a working class resort.

“Our industry is tourism, and the real reason people come here is the beach.”

But in the 1980s, that beach was reduced to a narrow strip. Not so today, all thanks to a
massive, and expensive, beach replenishment project. In 1991 countless tons of sand
were brought in, dunes were built. But that wasn’t the end of it.

To keep up with erosion, McGean says the beach here at Ocean City has already been re-
nourished 4 times.

“Approximately every 4 years we’re doing a re-nourishment project. To give you an idea
of the scale, that’s 100,000 truck loads of material that we’ll put on here. Though it
doesn’t actually come on a truck? No. It’s pumped in a dredge from out in the ocean.”

It is a constant fight, because the waves keep coming, keep pulling the sand back out to
sea. Scientists say this is partially just normal erosion. But some of it at least can be
blamed on global climate change and sea level rise. Over time, they say, the share of the
problem caused by climate change will grow.

“If you hadn’t done the beach replenishment do you have any sense of what this would
look like right now. There probably would have been no public beach left in many of
these areas.”

So far fending off the sea has cost $90-million, split amongst local, state and federal tax
dollars. But engineers estimate some $240-million in storm damage has been prevented.

“Holding back the sea is an economic proposition. If you’re willing to spend the money,
the sand exists to elevate any given barrier island.”

Jim Titus is the project manager for sea level rise at the Environmental Protection
Agency. And he’s been sounding the alarm about climate change for years. And he says
policy makers and the public will eventually have to decide which beaches, which
communities are worth saving.

“The challenge for communities like Ocean City is to persuade everyone else that they
are one of those cities that are too important to give up. And then to get their residents to
cooperate in doing what it takes to do to gradually elevate the entire community with a
rising sea.”

But if you think in geologic time, like University of Maryland professor Michael Kearney
does, there isn’t a whole lot of hope for barrier islands like Ocean City.

“It’s essentially a pile of sand. There’s really nothing permanent about it.”

Kearney studies coastal processes.

“The long term prospect of any barrier surviving the projected rates of sea level rise, even
at the moderate rates – the so-called moderate rates, that the IPCC predicted is pretty
slim.”

Ocean City engineer Terry McGean just isn’t buying it. He thinks Ocean City can survive
sea level rise.

“I think that we can design towards it and we can probably build towards it and with
responsible actions we can live with it.”

As long as there’s enough sand and money to keep it going.

For The Environment Report, I’m Tamara Keith.

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Ten Threats: Protecting Crumbling Shorelines

  • This is a private beach Charles Shabica developed for a homeowner on Chicago's North Shore. The grasses in the background are native to the area and help stabilize the beach and bluff. They also help trap and filter runoff. (Photo by Shawn Allee)

One of the Ten Threats to the Great Lakes is changing how the shoreline interacts with
the lakes. Humans like to improve on nature. For example, we like to build things to
protect our property. Protecting a home from forces like wind, water and soil erosion can
be a tough job and expensive sometimes. But if your property is along the shore of a
Great Lake, it can be especially difficult. Reporter Shawn Allee looks at one engineer’s
effort to protect lakefront property and nature:

Transcript

We’ve been bringing you reports from the series ‘Ten Threats to the Great Lakes.’ Our
guide in the series is Lester Graham. He says the next report looks at protecting property
and protecting nature:


One of the Ten Threats to the Great Lakes is changing how the shoreline interacts with
the lakes. Humans like to improve on nature. For example, we like to build things to
protect our property. Protecting a home from forces like wind, water and soil erosion can
be a tough job and expensive sometimes. But if your property is along the shore of a
Great Lake, it can be especially difficult. Reporter Shawn Allee looks at one engineer’s
effort to protect lakefront property and nature:


Great Lakes shorelines naturally change over time. Beaches erode. Dunes shift.
Sometimes, even the rockiest bluffs collapse.


That’s OK for nature, but maybe not for a house sitting on top of it. So it’s no wonder
that landowners try to stabilize their shorelines. To do that, they sometimes build walls
of steel or concrete to block incoming waves. It’s a tricky process. If the walls are too
short, they won’t stop erosion. But if they’re too long, they trap sand that moves
naturally along the lakeshore.


When nearby beaches can’t get sand, they degrade into muddy or rocky messes.


Charles Shabica is a coastal engineer. He’s been working at the problem for decades
now.


“My dream is to see the shores of the Great Lakes ultimately stabilized, but in a good
way and not a bad way where you’re causing problems.”


Shabica takes me to a small private beach north of Chicago. He engineered it to keep the
shoreline intact. The keys to that are two piles of rock that jut out into the lake.


The piles are just the right size – big enough to protect the shore, but small enough to let
some sand pass by. There’re other elements to the design as well.


Tall, blue-green grasses line the beach’s perimeter.


“Not only do waves tend to move sand around, but wind is also really an important agent,
too. So the beach grass and dune grass tends to stabilize the sand. And what will happen
is, you can see these things are seeding now, wind will blow the seeds and pretty soon
you get that stuff growing all over the place.”


A lot of homeowners and city planners applaud Shabica’s work. But not everyone does.


Some environmental groups say, once a landowner builds a wall or rock formation,
others have to follow suit, just to preserve their own sandy shoreline.


The environmental groups’ alternative? Keep development farther away from shorelines
and allow more natural erosion.


But that hands-off approach is not likely to happen. The majority of Great Lakes
shoreline is privately owned. And in many states, landowners often prevail in court when
they try to protect their investments.


Keith Schneider of the Michigan Land Use Institute says the question isn’t whether to
build near the shore, but how to do it.


He says, in the past, landowners tried to get off cheap. They didn’t pay for quality
construction or get expert advice on local geological systems.


“If you don’t pay a lot of attention to these systems, it’s gonna cost you a lot of money.
And if you build inappropriate structures or inappropriate recreational facilities, you’re
going to either be paying a lot of money to sustain them or you’re gonna lose them.”


A lot of coastal geologists agree that, for much of the Great Lakes coast, private
shoreline protection efforts – even the bad ones – are here to stay.


In urban or suburban areas, housing developments near the shore often include a buffer or
wall.


Michael Chrzastowski is with Illinois’ Geological Survey. He says, in these cases, the
shore can look natural…


“But it’s going to be a managed, engineered facility, because wherever you are on the
shore, you’re influenced by some other construction or historical development along the
shore that’s altered the processes where you are.”


That’s definitely the case along highly-developed, urban coastlines, such as Illinois’.
Other parts of the region are catching up, though.


“What’s going to happen is, other places along the great lakes as they become more
developed and they become more urbanized, they’re going to use Illinois as a model.”


That could bring more projects like Charles Shabica’s little beach. Shabica says that’s
not necessarily a bad thing.


It’s just a way to come to terms with our presence along the lakes.


“Human beings are here to stay. It’s our responsibility I think to make our environment
better for us, but not at the expense of the biological community, and your neighbors.”


That sounds reasonable enough. But it will ultimately mean the vast, natural coastlines of
the Great Lakes will be engineered, one beach at a time.


For the GLRC, I’m Shawn Allee.

Related Links

Ten Threats: Concrete Shores

  • Hardened shorelines protect buildings, roads, and homes, but many developers say a more natural method should be used. (Photo by Lester Graham)

Along many Great Lakes cities, long concrete or stone seawalls protect property against
wind and wave erosion. It’s a hardening of the shoreline that some people say is
necessary to protect expensive real estate. But some scientists and environmentalists say
it’s part of one of the ‘Ten Threats to the Great Lakes. They’re worried those concrete
seawalls are not only hurting the environment… in the long run, they’re hurting the
economy. Lynette Kalsnes has this report:

Transcript

In our series ‘Ten Threats to the Great Lakes,’ we’ve been looking at how humans make
changes that affect the health of the lakes. Lester Graham is our guide through the series.
He says the next report shows how far we’ll go to try to manage nature:


Along many Great Lakes cities, long concrete or stone seawalls protect property against
wind and wave erosion. It’s a hardening of the shoreline that some people say is
necessary to protect expensive real estate. But some scientists and environmentalists say
it’s part of one of the ‘Ten Threats to the Great Lakes. They’re worried those concrete
seawalls are not only hurting the environment… in the long run, they’re hurting the
economy. Lynette Kalsnes has this report:


(waves lapping against concrete wall)


In the middle of a miles-long concrete shoreline, there’s a tiny beach. Steve Forman points
toward a small bluff at the base of a tree. The professor of earth and environmental sciences at
the University of Illinois at Chicago says the sand, grass and dunes help soften the impact of
waves and rain.


“This kind of relief is what you’d see in many natural coastlines, a coastline like this can
accommodate change better than one that’s been concreted up.”


Just feet away, the concrete picks back up, like a stark white runway that bisects the land and the
lake. Concrete revetments like these in Chicago are a familiar sight in urban areas across the
Great Lakes.


Roy Deda is with the U.S. Army Corps of Engineers. The Corps manages much of the
construction on public shorelines. Deda says hardening the shore is one way of protecting against
erosion.


“Where hardening of the shoreline is important and used, is where you have an existing
community in an urban area like Chicago. You have a lot of development in place already, and
basically you’re protecting what’s been built over a long history.”


Deda says it protects property. But scientist Steve Forman says using concrete walls comes at a
cost: the destruction of natural systems that are often helpful.


Forman says wetlands and stream valleys normally act like a sponge to absorb high lake levels.
They also release some of the water back when lake levels are low. Forman says concrete can’t
buffer those fluctuations.


“It makes the extremes potentially even more extreme in terms of lake level variations.”


So, when there’s a rainstorm, Forman says the water runs off the concrete quickly… instead of
being absorbed across sand or wetlands slowly.


He says the same thing is true for the water flowing into the lakes from rivers.


Discharge into rivers can go up by 50 times the amount it would if natural areas buffered the
rivers.


“Any time we change the landscape from its natural components, we also change the plumbing of
the Great Lakes. We change the way water is routed in and around and through the Great Lakes
as well.”


It’s not only rushing rivers and lake levels that cause problems.


When the shoreline is hardened… the wildlife and organisms that once lived there disappear.


Cameron Davis is with the Alliance for the Great Lakes. He says many rare species live in that
narrow ribbon where the land meets the water.


“When we harden the shorelines, we basically sterilize them in a lot of ways, because we’ve not
providing the kinds of habitat and cover that we need for many of them.”


And beyond the effect on wildlife… hardening the shoreline can also be a bad economic decision.


Steve Forman says permanent structures built near the shores are not as stable as they might seem
when lake levels are high and winter storms cause big waves that erode the land underneath them.


“When the lake levels go up, the erosion rates are just phenomenal…what you see are hanging
stairs everywhere, instead of stairs that take you down to the beach, they’re hanging over the lake,
basically.”


That’s why scientists and planners are taking action. The Alliance for the Great Lakes’ Cameron
Davis is calling on planners to balance protecting the shoreline … with preserving ecology.


“Frankly I don’t think shoreline planning across the region is that great. There really is no single
unifying policy we’re all using to guide what our shorelines ought to look like.”


He’s hoping that some cities will experiment with restoring natural areas along their shorelines…
He says we need to see if in the long run, nature can do a better job of protecting the shores.


For the GLRC, I’m Lynette Kalsnes.

Related Links

Ginseng Thieves Strike the Midwest

  • Wild ginseng is protected in the Great Lakes states, but poachers illegally dig up the herb because of high prices.

Conservation officers are starting to notice a demand for a threatened native plant. The Great Lakes Radio Consortium’s Kaomi Goetz reports on how wild ginseng might be smuggled out of the nation:

Transcript

Conservation officers are starting to notice a demand for a threatened native plant. The Great
Lakes Radio Consortium’s Kaomi Goetz reports on how wild ginseng might be smuggled out of
the nation:


While other states have been hit by ginseng smugglers, this is something new in Michigan,
something they’ve never paid much attention to… until now.


Sergeant Ron Kimmerley and Officer Andy Bauer of the State Department of Natural Resources
are deep into the woods.


They’re scouting around Warren Dunes State Park next to Lake Michigan.


They spot what they’re looking for.


What they’ve found are wild ginseng plants, a threatened species that’s protected under Michigan
law.


What they’re also looking for are homemade flags marking the site and signs of digging.


Officer Bauer says they first noticed the flags last summer.


“There were felt flags stuck into the ground, and the rangers had seen those and thought it was
from an orienteering class. Later, we saw the flags were laid down and there were holes where
things had been harvested.”


Until then, Bauer says ginseng poaching had gone largely unnoticed.


More than 30 arrests were made last year and the scenario was often the same: A group would
act as a family of picnickers while one or two people slipped away to dig up ginseng.


Bauer says it was clear that most knew they were breaking the law.


“Some had plastic bags. Others, it was concealed much like narcotics would be, concealed under
their clothes. One woman, we found in the woman’s purse where the bottom was removed, and
there were at least 20 roots.”


Another similarity in the cases was that all those caught were of Asian descent.


Though separate instances, many of them had similar Chicago street addresses.


One man even came from Korea. He came on a 10-day tourist visa, apparently just to harvest
ginseng.


The officers suspect most of the wild ginseng was being taken back to Chicago to sell there or for
export to Asia.


Paul Hsu raises ginseng legally in Wisconsin. He agrees with the conservation officers that the
ginseng is being smuggled to Chicago or out of the country.


“They could have dug it and consumed there. But I don’t think that’s their intention. They dig it,
take it back to Chicago, sell it. They know the value of it.”


Hsu says ginseng roots have been valued in Asian culture for almost 3,000 years for its medicinal
properties.


“The Chinese believe it’s a cure-all…in the old-time, we don’t have antibiotics. It’s more like a
shot-gun approach. Can relieve stress, give you more stamina. To enhance the function of your
body, immune system…whatever.


Wild ginseng is considered more potent than cultivated ginseng, the kind Hsu grows.


And it’s lucrative. A pound a wild ginseng can fetch upwards of $350.


The fines in most Midwest states are fairly high. The penalties in Michigan range up to $5,000
for a first offense and could include jail time.


The poachers are aware of this and usually carry wads of cash. Officers say they suspect it’s
considered the price of doing business.


They’re taking the risk because ginseng is becoming increasingly scarce in Asia.
Environmentalists say that’s what’s behind the high demand and illegal harvesting of American
wild ginseng.


“It’s where there’s greater concentrations that have not yet been harvested.”


Dave Dempsey is a policy advisor at the Michigan Environmental Council.


“It’s more economical for harvesters to exploit here in Michigan and around the Great Lakes.”


Poaching has been going on in southern states for many years because of legendary stock around
the Appalachians.


More recently, poachers are targeting the Midwest because of rich soil. And ginseng has become
so rare everywhere else.


At Warren Dunes State Park, Sergeant Ron Kimmerley is organizing group patrols to try to catch
poachers.


There’s even plans to place plain-clothes officers as picnickers.


But he admits, it might not be enough.


“We’ve got a lot of poachers here, but what’s happening where we can’t be?”


So far, no one has been caught in Michigan this year. But Sergeant Kimmerley says the ginseng
harvest season is just beginning.


For the Great Lakes Radio Consortium, I’m Kaomi Goetz.

Related Links

GINSENG THIEVES STRIKE THE MIDWEST (Short Version)

  • Wild ginseng is protected in the Great Lakes states, but poachers illegally dig up the herb because of high prices.

Wild ginseng has been poached in North America for years. American ginseng is considered among Asian herbalists to be among the world’s most potent. But a dwindling supply in the more common hunting areas and a global, increased demand for herbal medicine is putting many states in the region at new risk for poaching. The Great Lakes Radio Consortium’s Kaomi Goetz reports from Michigan:

Transcript

Wild ginseng has been poached in North America for years. American ginseng is considered
among Asian herbalists to be among the world’s most potent. But a dwindling supply in the more
common hunting areas and a global, increased demand for herbal medicine is putting many states
in the Great Lakes region at new risk for poaching. The Great Lakes Radio Consortium’s Kaomi
Goetz reports from Michigan:


Wild ginseng is protected by some states as a threatened native species.


No one knows just how much ginseng is growing wild in the Great Lakes region. Yet incidents
last summer have law enforcement officers on the alert.


More than 30 people were caught trying to smuggle ginseng out of a Michigan state park next to
Lake Michigan.


Fines can go into the thousands of dollars with even possible jail time.


Even so, Sergeant Ron Kimmerley of the Michigan Department of Natural Resources says his
state is largely defenseless.


“There’s only about 200 officers, maybe a little less than that, in the whole state of Michigan. It’s
just not enough. I mean, some counties don’t even have an officer.”


This year, conservation officers are planning other tactics to catch poachers, such as using plain-
clothes officers. Other states such as Indiana and Illinois have also been targets for ginseng
poaching in recent years.


For the Great Lakes Radio Consortium, I’m Kaomi Goetz.

Related Links

Mining Endangers Sand Dunes

The dunes around Lake Michigan draw millions of visitors each year. But
the dunes are more than just a tourist attraction: the sand is a
valuable commodity in manufacturing. And sand dune mining has been
going on since the turn of the century. Today, dunes in Illinois and
Wisconsin are protected since they fall within state park boundaries.
There are some small mining operations in some of Indiana’s dunes, but
by far, most sand dune mining happens in Michigan. The state’s had a
law in place for more than twenty years to regulate the mining… But a
new report alleges that the law isn’t working. And the dunes are slowly
vanishing. The Great Lakes Radio Consortium’s Wendy Nelson reports:

Mining Endangers Sand Dunes (Wrap Version)

Sand dune mining has been going on around Lake Michigan since the dawn
of the industrial age. The sand is used by foundries to make molds for
casting metal. But despite a 1976 law to protect the dunes, a new
report released today (Tuesday 4/20) claims the dunes are in more danger
than ever. The Great Lakes Radio Consortium’s Wendy Nelson reports:

Dunes in Danger

The Great Lakes have the highest concentration of fresh water sand
dunes anywhere in the world. They were created thousands of years ago,
when the glaciers that formed the lakes receded. Wind patterns shaped
the dunes, which often tower hundreds of feet above the lakes. But over
the years, some sand dunes have disappeared. And others are slowly
being chipped away. The Great Lakes Radio Consortium’s Wendy Nelson
Reports: