Recommended Reading: “Holding Back the River” by Tyler J. Kelley

A reader recommended a book recently. I found it so interesting that I’m recommending it to you. It’s called “Holding Back the River: The Struggle Against Nature on America’s Waterways” by Tyler J. Kelley. It’s about the unintended consequences of mankind’s struggle to reduce flooding.

Author’s Voyage of Discovery

Mr. Kelley employs a narrative approach in writing this book. It literally represents a six year voyage of discovery for him that started with a recreational journey down the Ohio River in a small boat. Before the book ends, Kelly takes us along the route of Lewis and Clark up the Missouri River to the Dakotas and Nebraska. He also takes us down the Mississippi from Illinois to to Louisiana and the Netherlands. And on a jaunt through history with the Army Corps of Engineers, French explorers, Mark Twain, William Faulkner, Thomas Jefferson, and Ulysses S. Grant.

Along the way, we learn about dikes, dams, diversions, cutoffs, and other flood-control measures superimposed on the American landscape in a well-intentioned effort to foster commerce and protect people.

Mr. Kelley has a gift for explaining complex engineering projects in down-to-earth ways that non-technical people can easily understand. And he describes those projects through the eyes of hundreds of interviewees whose lives have somehow been affected. It all underscores the difficulty of flood mitigation at the intersection of engineering, politics, and geology.

Unintended Consequences

From oystermen in Louisiana whose catches have been affected by fluctuating salinity to Sioux in Nebraska forced to relocate villages, first due to dam construction and then again due to sediment build up. Kelley’s stories about sediment buildup behind dams reminded me of the challenges faced by Lake Houston Area residents after Harvey living downstream from 20 square miles of sand mines.

Other Parallels

The beauty of Kelley’s book is that even though the lessons learned come from other watersheds, many of those lessons can be applied to our own. As I read it, I found myself thinking back to stories I had reported during the last four years.

From a series of maps produced by the Army Corps Map showing how the Mississippi has changed paths hundreds of times. From a 2018 post about river migration.

Do I flood A or B?

One of Kelley’s more gripping stories was about an Army Corps commander being forced to decide whom to flood during a major storm – the town upstream or the farmers downstream – and the political uproar that ensued. Remind anyone of the Lake Conroe release?

Another gripping story pitted the people on one side of the Mississippi with those on the other. Armed residents on each side patrolled dikes during a major storm, fearing sabotage from someone on the other side. Letting floodwaters escape through one dike would take pressure off the other and thereby prevent flooding on the other side.

Ounce of Prevention Worth a Half Billion $ of Cure

Then there were the stories about the hundreds of millions spent to mitigate flooding when damage to property could have been avoided for free just by building homes in less flood-prone areas. Alas, that would have required some private properties to be conserved for the public good – which led to a discussion of the political will (or lack thereof) to exercise eminent domain.

Those hundreds of millions, of course, turn into a tax on children and grandchildren over time. But expedience being the better part of re-election campaigns, it’s easier for politicians to say, “We’re going to fix it,” rather than “We’re going to take your property to save your neighbors.”

Relocating Problems

But the most tragic parts of this book were the stories about trying to outmuscle Mother Nature and how flood-control efforts in one area often simply relocated problems to another after a while. It made me thankful that one of Harris County Flood Control District’s core values is not flooding one area to save another. Time and again, throughout the pages of this book, you saw that scenario play out.

If you’re looking for insight into the dilemmas that engineers face everyday, this book is for you. It will help you understand the agonizing tradeoffs that professionals often have to make.

Posted by Bob Rehak on 10/5/2021 based on a book by Tyler Kelley, with thanks to Beth Leggieri for the recommendation

1498 Days since Hurricane Harvey

Despite Heavy Rains, KMS Reconstruction Progressing Nicely

Since my last update, Kingwood Middle School (KMS) reconstruction has progressed nicely despite heavy rains and a tropical storm in the last month. My rain gage, a few blocks away recorded more than 11 inches of rain in the last 30 days – almost triple the average for September.

My last update on August 20 showed that contractors had erected most of the structural steel, but large parts of superstructure were still open. Today, almost the entire roof is on and most of the structure has been walled or glassed in.

It was barely 10 months ago, that this site was nothing but dirt, a dream, and a detention pond.

Photos Showing Status of KMS Reconstruction as of 10/3/21

Here are pictures of KMS reconstruction taken this afternoon with a drone.

KMS reconstruction as of 10.3.21. Looking SE from over Woodland Hills Blvd.
Looking N across roof of old KMS. Woodland Hills Blvd on left. Note how left (western) part of building is already bricked in. When new KMS is complete, the old one will be torn down.

Plans call for reconstructing the athletic fields on the site of the old school and building a permanent, larger detention pond where the circular drive in the foreground is.

It’s hard to tell from this angle, but temporary detention pond had barely emptied from yesterday’s deluge.
Only one small section in lower left remains without roof.
The new KMS will go up instead of out to create the needed capacity for students
As construction moves in phases from NW to SE, you see different degrees of finish.

Humble ISD still expects the school to open for the 2022 school year. For more information about the plans for the building, see the District’s web site. Find updates on other new construction from the 2018 bond here.

Posted by Bob Rehak on 10/3/2021

1496 Days since Hurricane Harvey

TWDB To Vote on Accepting $63.6 million in FEMA Flood Mitigation Assistance Grants

In its October 7, 2021, board meeting, Texas Water Development Board members will vote on whether to accept $63.6 million in FEMA Flood Mitigation Assistance Grants. The federal funding comes with some strings attached: a $10.23 million local match.

For this round of funding, the TWDB selected 19 sub-applications from local government entities. After screening, FEMA eliminated 6 and identified 13 “for further review.”

Here’s a summary from the TWDB of what they will vote on.

From TWDB Agenda for October 7, 2021

What are Flood Mitigation Assistance Grants?

FEMA’s Flood Mitigation Assistance Program provides competitive grants to local governments for projects that reduce or eliminate the risk of repetitive flood damage to buildings insured by the National Flood Insurance Program.

FEMA chooses recipients in part based on cost-effectiveness (benefit/cost ratio).

Often, local governments, such as cities or counties, bundle individual applications as MoCo did to buy out Tammy and Ronnie Gunnel’s home and dozens of others as we saw in yesterday’s post. That home flooded 13 times in 11 years and cost NFIP at least three quarters of a million dollars.

In a sense, most of these grants are designed to cut FEMA’s losses.

Summary of Each Local Application

Attachment B to the agenda gives a rundown on each of the projects under consideration. See below.

Harris County Drainage Project in Bear Creek Village

Bear Creek Village is located on the west side of the Addicks reservoir near Highway 6. This is an $11.3 million project of which the federal government would pay $8.5 million.

The Harris County project would mitigate 1,421 structures. The current storm sewer system is designed for a 3-year event and is inadequate to collect and drain extreme event runoff. The proposed drainage improvements are intended to provide an additional flow path, so that excess storm water is contained within street right-of-way to an outfall. The project will incorporate a combination of channel construction, street regrading, and enhancement of outfalls. The project has a positive Benefit-Cost Ratio of 1.09.

Harris County Flood Control District Single-Family Home Acquisitions

Total cost = $16.7 million with federal government paying $14.7 million.

Harris County Flood District seeks to mitigate 61 structures: 23 Severe Repetitive Loss structures, 17 Repetitive Loss structures, and 21 at risk of continual future flooding. HCFCD would acquire and demolish structures, then convert the land to open green space. The project has a positive Benefit-Cost Ratio of 1.09.

Harris County Flood Control District Commercial Acquisition

This is a $3.7 million buyout with the federal government picking up the whole tab.

Harris County Flood Control District wants to buy out a hotel on the east freeway with a severe repetitive loss history. HCFCD would demolish the property and convert the land to open green space. The project has a positive Benefit-Cost Ratio of 1.84. The grant application notes that since 1979, FEMA has paid out $8 million in NFIP claims on this property.

City of Houston Single-Family-Home Elevation Project

Total Cost $1.5 million (all paid by federal government) to elevate 5 severe-repetitive-loss homes ($300,000 each). All would be elevated at least 2 feet above the 500-year floodplain. That would hopefully reduce or eliminate future NFIP claims. The project has a positive Benefit-Cost Ratio of 1.1.

Jersey Village Single-Family-Home Elevation Project

Total Cost $4.9 million with federal government covering $400,000.

Jersey Village seeks elevate 16 structures: 10 are Severe Repetitive Loss, five Repetitive Loss and one at risk of continual future flooding. Elevation will raise structures one-foot above Base Flood Elevation per the City’s freeboard requirements. The project has a positive Benefit-Cost Ratio of 1.32.

Montgomery County Single-Family-Home Acquisition and Demolition

Total Cost = $12.6 million with federal share of $12.4 million.

Montgomery County seeks to mitigate 40 flood prone structures (31 Severe Repetitive Loss and 9 Repetitive Loss structures) by acquisition, demolition, and the conversion of land to open green space. The project has a positive Benefit-Cost Ratio of 1.36.

Tammy Gunnels’ Home in Porter is an example of a Severe Repetitive Loss Home. It flooded like this 13 times in 11 years and was bought out yesterday as part of another Montgomery County grant. Before the buyout, it cost FEMA more than 3 times its fair market value and would have continued flooding had nothing been done.
Pearland Single-Family-Home Elevation Project

Total Cost $500,000, all covered by federal government.

The City of Pearland seeks to mitigate two Severe Repetitive Loss structures by elevation one-foot above the Base Flood Elevation per the City’s freeboard requirements. The project has a positive Benefit-Cost Ratio of 1.08.

Taylor Lake Village Single-Family-Home Elevation Project

Total Cost $2.77 million with federal government covering $2.75 million.

Taylor Lake Village wants to elevate eight Severe Repetitive Loss structures and one Repetitive Loss structure one foot above the 100-year flood level. The project has a positive Benefit-Cost Ratio of 3.1.

In each of the projects above, the owners have all voluntarily committed to the elevation or demolition of the structures.

Recommendation of TWDB Staff

The Executive Administrator of the TWDB recommends that his board approve all these grants. This program meets the agency’s objectives of providing financial assistance to communities to reduce or eliminate the long-term risk of flood damage and to become more flood resilient.

Meeting Details

The Board meeting will be held on Thursday, October 7, at 9:30 a.m. via GoToWebinar  If you wish to address the Board, please fill out the visitor registration form and send it to Cheryl.Arredondo@twdb.texas.gov no later than 8:00 a.m. on October 7. For more information, please visit the TWDB’s website.

Posted By Bob Rehak on October 7, 2021

1495 Days since Hurricane Harvey