Despite efforts to stop them, floods hammered the U.S. in the early 20th century. A now abandoned model of the Mississippi river, its tributaries and surrounding lands was built to better understand how to combat those floods.
"Although the scope of flood control had expanded beyond the Mississippi, the work was limited by current field research methods; engineers found it difficult to track what was being done at various points along the river and thus impossible to predict how isolated "solutions" might affect one other. To understand the Mississippi River Basin as a dynamic system of interconnected waterways, the Corps needed new, more sophisticated scientific tools.
Reybold came up with a radical idea: a large-scale hydraulic model that would enable engineers to observe the interactive effects of weather and proposed control measures over time and 'develop plans for the coordination of flood-control problems throughout the Mississippi River Basin.'"
As Kristi Dykema Cheramie writes in this essay for Places, the model was built and used, but eventually faded from service. It still offers lessons about the intent and impact of water management efforts in the U.S.
FULL STORY: The Scale of Nature: Modeling the Mississippi River

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

Walmart Announces Nationwide EV Charging Network
The company plans to install electric car chargers at most of its stores by 2030.

Chicago Approves Green Affordable Housing Plan
The Mayor’s plan calls for creating a nonprofit housing corporation tasked with building affordable housing that meets Green Building standards.

E-Scooter Parking: A Guide
How smart planning — and ample designated parking — can end conflicts over shared scooters.

‘It’s Been 50 years’: Public Transit Law Passes in Montana
Legislation would fix transportation district issue, allow for greater reach on city bus routes.

Top 10 Tech-Ready Cities
An index ranks U.S. cities based on their preparedness for the ‘smart city future.’
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
City of Moorpark
City of Tustin
City of Camden Redevelopment Agency
City of Astoria
Transportation Research & Education Center (TREC) at Portland State University
Regional Transportation Commission of Southern Nevada
Toledo-Lucas County Plan Commissions