Wednesday, January 23, 2019

The Cost of Water

I found this map created by the Los Angeles Bureau of Power and Light in 1922 via the Cornell University Library's Persuasive Maps collection.
https://digital.library.cornell.edu/catalog/ss:19343636
It appeared on the back of an electric bill and was meant to explain the cost of water. There is a chart of water rates comparing LA favorably to other cities. I like the title "Why Not Free Water? Because of the Cost." It does a good job of breaking down the costs of the 250-mile aqueduct and distribution system.

I stumbled across the map above while looking for the one below. It appeared in some marketing materials and makes a nice modern contrast to the Cost of Water map. It is a different era but the water issues are even more urgent.
https://www.nycwatershed.org/about-us/overview/croton-catskilldelaware-watersheds/
New York City's water system delivers over a billion gallons of water each day to 9 million residents. The length of the aqueducts and reach of the system is impressive - 1,972 square miles of drainage systems flowing into an aqueduct that crosses the Hudson River. That's a lot of cost for water- think about that next time you leave the faucet running.

Wednesday, January 16, 2019

The Costs of War

This map via Smithsonian Magazine shows much* of the breadth of US military and government anti terrorist actions.
https://thumbs-prod.si-cdn.com/DepQcE5siDEClK1OMDdPaFRimKo=/1072x720/filters:no_upscale()/https://public-media.si-cdn.com/filer/76/45/7645fe6c-a982-4828-bdff-7043074884b2/counterterrorismmapweb.png
The map was developed by Brown University's Costs of War Project. Since the image is a bit blurry when zoomed in, here is a detail from their web page,
and also an enlarged legend.
 "We found that, contrary to what most Americans believe, the war on terror is not winding down—it has spread to more than 40 percent of the world’s countries."

Read more at: Smithsonian and even more at the Costs of War Project
  
* as stated in the article "U.S. efforts to combat terrorism abroad are likely more extensive than this map shows."

Thursday, January 10, 2019

The Great Molasses Explosion

January 15th will mark the 100th anniversary of the Great Molasses Flood. In Boston's North End, a tank filled with molasses burst sending a wave of molasses up to 25 feet high through the streets at 35 miles per hour and knocking buildings off their foundations.

Here is a simulation on YouTube of the flow. User ingomar200 factored in topography, building heights and the size of the tank to create this. He shows the velocity contours later in the video.
This is from a 1917 Bromley Atlas showing the area-via the Boston Planning & Development Agency.
Molasses was used in the manufacture of munitions, The tank is the blue circle. It was conveniently located near the docks and next to the elevated railway that was partially destroyed by flowing molasses. The tank was constructed in haste and inadequately.

21 people and many horses were killed. Some city blocks were flooded to a depth of 2-3 feet. Cleanup of the area took weeks and the harbor was brown for months. Victims brought a successful class action suit against the owners who tried to use fear of terrorism to avoid punishment, claiming that anarchists had placed dynamite in the tank.

Here is the Boston Globe from January 16, 1919 - via the Boston Public Library's flickr page.
and their diagram of the area.
 https://www.flickr.com/photos/boston_public_library/4901511527/in/album-72157624622085789/

Wednesday, January 2, 2019

Geopolitical Map Genres to be Vigilant of in 2019

This excellent Twitter thread by Steven Seegel, author of Map Men is a good way to start a new year. Rather than show all 11 tweets, I will post some highlights. You can see the whole thread by clicking on the first tweet below.

Here's a map I posted without considering its possible implications of "problematic" populations.