What ChatGPT Says about Developing Scarborough Floodplain Property
Almost 7,500 people so far have signed the petition against developing the 5,300-acre Scarborough property near the confluence of Spring, Cypress and Turkey Creeks with the San Jacinto West Fork just west of Kingwood. Hydrologists have said that developing this land would be like “aiming a fire hose at the Humble/Kingwood Area.”
I asked ChatGPT why and this is the response.
There are several arguments against development. Some are engineering-based, some environmental, and some policy-related.
1. It is one of the most flood-prone locations in the Houston region
The site sits at the convergence of multiple major watersheds. During large storms, floodwaters from Spring Creek, Cypress Creek, and the West Fork all interact in the same area. Opponents argue that this makes the property function as a natural flood-storage area. (Reduce Flooding)
Floodplain mapping cited in public discussions of the project shows that most of the tract lies within FEMA-mapped floodplains, floodways, wetlands, or combinations of all three. Only a relatively small portion is outside the mapped 500-year floodplain. (Reduce Flooding)
2. Development could reduce natural flood storage
Large floodplains temporarily store water during floods. Even when regulations require detention ponds, detention does not always replicate the function of a broad natural floodplain at the confluence of major rivers.
Critics contend that filling, elevating, road-building, and other development activities could displace floodwater and alter flow patterns, potentially increasing flood elevations elsewhere. This concern was cited by local officials who opposed the project. (Houston Chronicle)
3. The location is vulnerable to backwater effects
The confluence area experiences complex hydraulics. When the West Fork is high, water can back up into Spring Creek. Likewise, heavy flows on Spring Creek can impede drainage from nearby areas.
Because the site is so flat and near multiple converging waterways, small changes in elevation or conveyance can have outsized effects on flood behavior. This is a classic problem in low-gradient coastal plain rivers such as those around Houston.
4. Downstream communities already have a history of catastrophic flooding
Areas downstream and adjacent to the tract—including Kingwood, Humble, Atascocita, and portions of northeast Harris County—experienced severe flooding during:
- The Tax Day Flood (2016)
- Hurricane Harvey (2017)
- Multiple major floods in 2024
Opponents argue that introducing thousands of homes into a natural flood-storage area creates additional risk for communities that have already suffered repeated flood losses. (Houston Chronicle)
5. Future flood maps may show even greater risk
Many current FEMA maps are based on pre-Atlas 14 rainfall assumptions. Atlas 14 substantially increased design rainfall amounts for the Houston region.
A tract that appears marginally developable under older flood maps may be substantially less developable under newer hydrologic assumptions. This has been a recurring concern raised by local flood experts and residents. (Reduce Flooding)
6. Environmental impacts could be substantial
The property contains:
- Extensive wetlands
- Bottomland hardwood forests
- Riparian habitat
- Wildlife corridors associated with Spring Creek and the San Jacinto system
The Spring Creek watershed is regarded as one of the more environmentally sensitive watersheds in the region because much of it remains relatively undeveloped. (HCFCD)
Development could fragment habitat, reduce wetland functions, and diminish water-quality benefits currently provided by the undeveloped floodplain.
7. Public infrastructure costs may exceed benefits
Because of the flood risk, development would likely require:
- Elevated roads
- Bridges
- Extensive drainage infrastructure
- Utility extensions
- Ongoing maintenance
Critics argue that taxpayers could eventually bear part of the cost of protecting and repairing infrastructure built in a location that naturally floods.
8. Alternative uses may provide greater public value
Many local officials have advocated preserving the tract as:
- Flood-mitigation land
- Regional green space
- Conservation land
- Floodwater storage
In 2025 and 2026, both the City of Houston and Harris County adopted resolutions opposing development of the tract, and several local officials publicly advocated maintaining the property for flood-control purposes rather than residential development. (Houston Chronicle)
The strongest technical argument
The strongest engineering argument is not simply that the land floods, but that it floods because it is located at the hydraulic junction of three major watersheds. Land at such confluences often performs a regional flood-storage function that is difficult and expensive to replace artificially. Once developed, that storage function is largely lost forever. (Reduce Flooding)
The counterargument from developers is that modern engineering, detention, elevated construction, and mitigation measures can allow safe development. The central dispute is whether engineered mitigation can truly replace the flood-storage and conveyance functions currently provided by thousands of acres of undeveloped floodplain at this particular location.
Sign Petition to Help Protect This Land
This land could not be developed economically without governmental help. But development would likely increase flooding, requiring costly governmental mitigation and disaster relief efforts in the future – typically up to 8X more than the cost of preservation.
State Rep Steve Toth says the Texas General Land Office’s School Land Board has promised the developer it would invest $140 million in the property. Ironically, the GLO also manages $14 billion worth of flood mitigation dollars – a clear conflict of interest.
The GLO, SLB, and Ken Paxton’s Attorney General’s Office have all denied FOIA requests attempting to discover more about their relationship with the developer.
If you think this is a bad investment of your tax dollars, please help; sign the petition against developing this land.
Posted by Bob Rehak on 6/6/2026
3203 Days since Hurricane Harvey
The thoughts expressed in this post represent opinions on matters of public concern and safety. They are protected by the First Amendment of the US Constitution and the Anti-SLAPP Statute of the Great State of Texas.
