Flood Bond, MAAPnext Updates Show Projects Slowing

Two new updates provided to Harris County Commissioners on Tuesday 8/2/22 show progress on the 2018-flood-bond and MAAPnext slowing compared to previous estimates.

Flood-Bond Progress

In many ways, the Harris County Flood Control District (HCFCD) Flood-Bond Progress Reports are a model of government transparency. They provide detailed information, even when the news is not all good. The most recent flood-bond update showed that HCFCD:

  • Awarded one more construction contract during July. The count increased from 46 to 47.
  • Awarded 5 new agreements, down from 11 the previous month.
  • Spent only $8 million on bond projects including:
    • $1 million dollars in grant money – $368 million total up from $367 million the previous month.
    • $6 million in bond funds – $551 million total up from $545 the previous month.
    • $1 million in local funds – $141 million total up from $140 million the previous month.
  • Completed 0.2% more of the projects in the bond – 22% up from 21.8%.
  • Finished 21 more buyouts – 802 up from 781.
  • Stayed at .97 on the Key Performance Indicator Scale – slightly behind schedule.
Step by Step, Project by Project

Updates also show the progress of each bond project in the form of detailed GANNT charts. Check pages 4-9 to see projects in your watershed.

For full report in high-resolution PDF format, click here.
Watershed by Watershed

The next two pages show the amounts spent and funded to date in each watershed. These maps give readers a good idea of where the money goes. Draw your own conclusions and remember the map below when certain politicians tell you some watersheds don’t get anything.

Screen Capture from Page 10 of Full Report
Active Construction

The last two pages describe updates on active maintenance and construction projects with spending on each. They show that – five years after Harvey – the Lake Houston Area still has only two active capital projects in construction. Both are excavation and removal contracts for $1000 each.

Pace of Projects Slowing

From looking at these reports month after month, it feels as though the pace of activity has slowed. We’re 40% of the way through the 10-year flood bond in terms of time, but only 22% complete. The gap is getting wider. Worse…

At the rate of $8 million per month, it would take 500 months to spend the next $4 billion in the bond.

That’s more than 40 years, not the 10 originally planned. We need explanation. But HCFCD executives were not immediately available to provide it due to travel schedules. I will follow up.

MAAPnext Progress

MAAPnext is the county’s effort to update flood-risk maps in the wake of Harvey. There’s not much new to report.

The timeline has slipped three months. In earlier updates, HCFCD indicated new maps would be released in spring/summer this year. Now, the target has slipped to summer/fall. A large portion of the update consisted of trying to explain why. In a sentence, “We’re waiting on FEMA.”

So I tried contacting FEMA. But FEMA could not provide a more precise estimate.

Harris County followed standard practice by submitting its findings to FEMA prior to public release. FEMA is currently reviewing all data and models. It is also producing preliminary Flood Insurance Rate Maps (FIRMS) based on those models. The data will help determine flood insurance premiums as FEMA moves to an actuarial-based system called Risk Rating 2.0.

Next Steps

When FEMA is ready, it will first brief community officials and floodplain administrators, and give them access to preliminary data. Shortly thereafter, FEMA and HCFCD will hold a series of open houses to brief the public. Public comment periods and appeals follow.

So, at best, the new maps will be released in 2024, seven years after Harvey. That’s fairly consistent with the length of time it took to finalize new flood maps after Tropical Storm Allison in 2001. Those maps became official on 6/17/2007.

But this process is far more complex because of Risk Rating 2.0. It includes individual flood-risk assessments for millions of homes. And that risk assessment will now also include street flooding, not just coastal and riverine flooding.

Posted by Bob Rehak on 8/5/2022

1802 Days since Hurricane Harvey

All Parties Still Focused on Finding Solution for Adding Flood Gates to Lake Houston Dam

Initial options that the City of Houston explored for adding more flood gates to the Lake Houston Dam struggled to achieve a high enough Benefit/Cost Ratio. However, all parties involved are still hopeful that a solution can be found. They are now evaluating yet another option. It would add gates in the earthen (eastern) portion of the dam.

Looking south over eastern portion of Lake Houston Dam at area under consideration for five new tainter gates. The spillway is out of frame to the right. Picture taken on 7/22/22.

More Gates Would Create More Room For Floodwaters

Flooding devasted the entire Lake Houston Area during Harvey. Since then, Mayor Pro Tem Dave Martin has led an effort to find a way to lower the lake faster in advance of a storm. This would create extra room in the lake for floodwaters. And that would reduce the risk of flooding homes and businesses around it.

Currently, the dam has a fixed height spillway. That makes releasing water in advance of a storm difficult. The dam does have several small gates, but they have only 1/15th the release capacity of the gates on Lake Conroe. Adding more gates would help release water faster…to keep up with water coming downstream.

It would also let managers wait to start a release until they were certain a storm would not veer away. That would help avoid wasting water if forecasts are not accurate.

The Dual-Role Dilemma

The City built Lake Houston in 1953 to supply water. Making the dam play two roles – water supply and flood mitigation – poses a challenge.

In 2017, immediately after Hurricane Harvey, Martin began leading the effort to transform the dam to play a dual role. This would let Lake Houston provide our region with needed drinking water and reduce flood risk. 

New Timeline Longer Than Hoped, But Still Shorter Than Usual

A project of this magnitude normally takes up to twelve years. However, Martin worked with federal, state, and local officials to shorten the timeline. Martin now hopes the project will take no longer than seven years. While acknowledging that he hoped completion would happen in as little as five years, Martin also cites unexpected technical and cost challenges related to the aging dam.

Difficulty of Finding Best Alternative

The age of the Lake Houston Spillway, built in 1953, has proven to be a bigger obstacle than expected. Engineers initially proposed six different alternatives for adding different types of gates in different locations, with variations on several.

As engineers started precisely calculating costs and benefits of preferred approaches, they weighed those against environmental impacts, construction challenges, safety risks, and available budget.

During that process, engineers discovered hidden challenges with some options that initially looked promising. At this point, they have determined that all six initial options cost more than the federally funded amount of $48 million. 

A Complicated Path Forward

So now engineers are focusing on finding the optimal solution while Martin and others explore options to pay for it.

Martin says the City of Houston, Texas Division of Emergency Management and Federal Emergency Management Agency are working together to find the option with the highest Benefit to Cost Ratio (BCR). 

Acceptable BCRs for projects like this range from .75 to 1, according to Martin. Preliminary engineering studies found that two crest-gate alternatives (already evaluated) yielded only .48 – largely due to the aging structure of the existing spillway, which drove up costs. 

City Expects Answer on Latest Option Before October

Currently, the City has paused the final-design phase of the project while engineers evaluate Alternative 1A. That now consists of five new tainter-gates (not six or twelve as previously reported) on the earthen embankment east of the spillway. 

The comprehensive, final BCR analysis for the embankment alternative should be completed by the end of September 2022. The preliminary engineering report suggested the 1A alternative could reduce flood heights by half a foot for a cost of $47.3 million with a BCR of .89. So initially, on the surface, this appears feasible.

Martin Widens Search for Funding

While engineers work to find the best BCR, Martin is leading an effort with BOTH state and federal partners to find additional funding for the project. 

For instance, Martin is working with outgoing State Representative Dan Huberty and incoming State Representative Charles Cunningham to seek funds in the upcoming Texas Legislative Session. Martin says that state dollars do not require BCRs like federal dollars do.

While all the challenges would have discouraged many, Martin says they have fortified his resolve. He vows to find a path forward. Martin promises an update in his regular fall public meeting in October and hopes to have an attractive BCR for alternative 1A.

Interim Flood-Mitigation Measures Still In Place

In the meantime, the City of Houston will continue its existing Lake Houston pre-release strategy. It calls for lowering the lake when forecasters predict three or more inches of rain in the San Jacinto Watershed. Since Hurricane Harvey, the City has lowered the lake more than twenty times and successfully avoided flooding.

Thanks to Key Contributors 

Martin acknowledges the continuing contributions of Congressman Dan Crenshaw, Governor Greg Abbott, Lt. Governor Dan Patrick, Commissioner Tom Ramsey, State Representative Dan Huberty, State Representative-Elect Charles Cunningham, TDEM-Chief Nim Kidd, Mayor Sylvester Turner, Chief Recovery Officer Stephen Costello, and Harris County Flood Control District. 

Martin says, “All parties are committed to constructing these additional gates to help ensure protection against future flood events.”

Posted by Bob Rehak on 8/4/2022

1801 Days since Hurricane Harvey

TCEQ Finds Nothing Wrong With Preserve At Woodridge Construction

A TCEQ investigation found nothing wrong with construction practices at the Preserve at Woodridge despite photographic evidence.

On April 23, 2022, I received multiple complaints about silty stormwater in Bens Branch. I confirmed discoloration in the water and followed it upstream. The source appeared to be the Preserve at Woodridge on Woodridge Parkway opposite the new St. Martha church. Photos confirmed that contractors were:

  • Pumping the contents of their silty detention pond into a tributary of Bens Branch.
  • Piling dirt on neighboring property.
  • Not using silt fence along their southern boundary.
  • Not posting permits.

I then filed a complaint with the TCEQ. They investigated on June 21, 2022, almost two months later. And found nothing wrong.

Today, August 3, 2022, I received this letter confirming they found nothing wrong.

Letter from TCEQ. For a high-res PDF, click here.

Caught on Camera

My complaint was based on these photos (among others).

silty stormwater discharge
Stormwater discharge into Bens Branch from Preserve at Woodridge Forest.
preserve at Woodridge
Note pile of sediment in front of hose (bottom center).
silt from Preserve at Woodridge
Silty stormwater had migrated more than two miles down Bens Branch past Tree Lane.

I guess there was nothing wrong. Message received, TCEQ.

Posted by Bob Rehak on 8/3/2022

1800 Days since Hurricane Harvey