Skip to content

Ciudad de México Has Been Sinking (Not Me)

May 25, 2010

Hey, look, Mexico City!

Oooh, pretty colors! What could they mean? Foilage? Population density? Availability of huarachas?

Um, no.  They indicate the rate at which Mexico City is sinking thanks to groundwater extraction.

Not entirely surprising given Ciudad de México (aka Tenochtitlan) was built on a lake. Here we see it in 1580.

Cool islands!

(Hey, that sure looks familiar.)

(Good thing we don’t impose Aztec handball consequences on the Giants or the Sharks.)

Anyway, you build on fill and your city sinks. We here are familiar with the concept.

So, back to this image taken by TerraSAR-X, a German radar satellite: green equals no change, while yellow and red indicate increasing subsidence for the city built upon the bed of a lake.

But how much change?

“…within this imaging period, the ground has sunk by as much as 10 centimetres in some places as a result of the water extraction”

Uh oh. 10 cm equals nearly 4 inches.

Over what period of time?

“…between 20 September 2009 and 30 January 2010”

Parts of Mexico city sunk FOUR INCHES in FOUR MONTHS. One inch. Per month.

“What is particularly noticeable even to anyone on a short visit is the subsidence in the city centre, where two of its most famous landmarks, the Bellas Artes Opera House and the cathedral in the main square, are sinking rapidly,” says Michael Schmidt, coordinator at Conobio, the National Commission for the Exploration and Use of Biodiversity, in Mexico City. “When you look at the cathedral from the front, you can immediately spot that it is leaning.”

Hey, I have an idea — stop pumping so much water.

Even if pumping stopped and the sedimentary layers absorbed moisture again, they would not return to their original thickness,” says geologist Christian Minet of the DLR Institute for Remote Sensing Methodology.

Oh dear.

“Instead, steep and deep groundwater funnels would be formed in the Mexican capital – with the result that various districts in the city would subside. This means that at its front, over the fine-grained marine sediment, the cathedral is sinking, but, on the other hand, the rear part is standing on parts of a former Aztec temple.”

Plan B: build everything on top of former Aztec temples.

10 Comments leave one →
  1. May 28, 2010 11:25 am

    Amazing… they are drawing so much water… but no one wants to drink it… (I got one hell of a sick in Mexico City…)

  2. May 29, 2010 12:22 am

    I’m not the only one thinking of Treasure Island, am I?

  3. Matt permalink
    March 23, 2011 4:17 pm

    My neck-tie is asleep

  4. May 23, 2011 4:07 pm


  5. December 9, 2011 5:55 am

    Написано не плохо, но хотелось бы почитать в более развернутом виде. Есле не трудно конечно !!!

  6. April 27, 2013 2:16 am

    The best part of it all is that there is no charge or fee payable to download
    Hollywood movies. Consider this offer these sites make; a full lifetime membership for downloading
    i – Pod music ‘ unlimited music, songs and music videos at anytime at any place in a totally secured environment free from viruses, adware and spyware at the price of a few cinema tickets and snacks thrown in. Most of the websites offer the free video games online for the people.


  1. Sinking Cities – Mission Loc@l -- San Francisco Mission District's News, Food, Art and Events
  2.  | MissionLocal: Spanish Language Version
  3. Desfile Porsche en Mexico 2009

Leave a Reply to Matt Cancel reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: