Sea Level

Cost of Doing Nothing

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Some folks think switching to electric vehicles and renewable energy would be inconvenient and costly. But they’re not considering the cost of inaction. Doing nothing puts us on the path for high carbon emissions. Let’s consider just one predicted consequence: a ten foot (3 meter) sea level rise. We don’t know when exactly, but melting ice and warming seas are accelerating rapidly. And the seas will continue rising until we fix our carbon pollution problem.

Much of the most expensive real estate in the US is just above sea level in places like California, Florida and New York, so let’s consider just a few examples.

  • San Francisco International Airport runway 10R ends at about seven feet above sea level.
    • So much for the convenience of flying.
  • Highway 101 south of the airport is often between zero and ten feet above sea level.
    • Even a super-duty pickup truck can’t drive through that.
  • Miles of sea walls are being built in places like Foster City California to protect against a three foot sea level rise, but other vulnerable Bay Area cities are doing far less.
    • If you pay taxes for a sea wall, but the neighboring town does not, where will you move?
  • Many farms in the Sacramento Delta are already below sea level, behind levees first built by Chinese laborers in the 1850s. California is working on a tunnel there to protect and transport freshwater, but the intakes are around Hood California, elevation 7-10 feet.
    • We’re going to need a longer tunnel.
  • The traffic tunnels in Manhattan are just around sea level, and they can be closed in advance of storm surges. For now, they can be reopened after the storm passes. But lower Manhattan lies around five feet above sea level.
    • Maybe New York City will be renamed New Atlantis?
  • Miami is around six feet above sea level, but its fresh water aquifer lies between 2-6 feet through porous rock below the flat land.
    • No more beach is bad enough, but no fresh water?
  • Critical systems at Turkey Point nuclear power plant near Biscayne Bay are at 20 feet elevation, so you might think a ten foot rise would still be safe. But the hurricane surge in 1992 was 16 feet, and storms are getting bigger and more powerful.
    • Anyone remember Fukushima?

We already have a housing affordability problem. What will happen when some lowlands disappear? Well, tens of millions of Americans may have to move by the end of the century, driving up costs in inland areas. That seems inconvenient and costly.

And infrastructure is just one of many different problems being caused by our carbon pollution (see January, February and March). April is supposed to be Financial Literacy month, but our government has stopped even discussing the coming crisis, let alone funding research, mitigation or prevention. Seems pretty stupid to ignore the costly consequences of doing nothing about the climate crisis.

Everglades National Park

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The southern end of Florida is home to Everglades National Park, which is also a UNESCO Biosphere and a World Heritage Site. Since 1900, the area has been both protected and threatened, with political battles needed to protect bird plumage, to create the park, and to protect the large, diverse ecosystem here. Marjory Stoneman Douglas wrote a book to explain how the Shark Valley River Slough runs as a “river of grass” through the Everglades. When summer rains fill Lake Okeechobee, a sheet of water overflows the low bank and floods the flat grasslands, revitalizing fish eggs and a whole ecosystem. A cross Florida road called the Tamiami Trail prevented that flow, and a political battle was fought to restore it partially. The fresh water eventually sinks through the limestone, filling the Biscayne Aquifer to provide drinking water for Miami. There are also canals crisscrossing lower Florida, including here, and that’s where these two young alligators were hanging out. Alligator Alcatraz, a temporary migrant detention center, is in the Everglades ecosystem, but it’s not in the national park. Alligator Alcatraz is north of the Tamiami trail in Big Cypress National Preserve.

The park is 1.5 million acres, including the mangrove islands that form the southern end of Florida, before the Keys. The best place to see the mangroves is by boat, either from Everglades City west of Big Cypress or by driving to Flamingo. I took my family to the latter, and we saw a large crocodile near the dock, plus much more wildlife on a quick cruise in the “submerged wilderness” of Florida Bay. Personally, I wouldn’t kayak these waters, but many people do, camping on the Chickees or raised bits of ground where natives camped seasonally and for different purposes for centuries at least. There’s even a paddling waterway to go between Everglades City and Flamingo. Before the highway was built out to Key West, visitors commonly took a similar route by boat.

The work of environmental protection is never done. Burmese pythons entered the park in the 1970s—likely as discarded pets—, and now they’ve wiped out most of the native animals, threatening the Florida panther with extinction. I was disappointed to see the dramatic decline in wildlife evident from the Shark Valley Tower, since I first visited decades ago and even since I visited again with my family not so many years ago. And since last year, the state government is not allowed to mention climate change, global warming or sea level rise, but that obviously won’t do anything to prevent rising sea levels from submerging much of southern Florida, including most of Miami and almost 1/2 the park in the coming decades. Especially if the government refuses to take action, climate science clearly shows that the environment will only continue to worsen more rapidly.

Here are my visits to all parks in Florida.