Entering the Houston Land/Water Sustainability Forum (HLWSF) Low Impact Development Design Competition requires far more than basic CAD skills. This competition challenges professionals to apply nature-based stormwater strategies to real-world Texas Gulf Coast properties. Since the stakes reflect actual regional development hurdles, the eligibility requirements for the Houston LID Forum mandate strict cross-disciplinary collaboration and rigorous hydrologic proof.
Firms cannot submit theoretical concepts or generic rain garden sketches. The forum demands actionable, cost-effective infrastructure plans capable of surviving extreme high-intensity rain events. If your firm plans to compete, you must assemble a highly specialized roster capable of validating every design choice through advanced hydraulic modeling.
Forming an Integrated Design Team
The forum structure prohibits siloed engineering. A solo civil engineer or a standalone architectural firm will struggle to meet the holistic criteria required for entry. Eligible teams must operate as integrated units, bringing together professionals from multiple disciplines to address urban ecological sensitivity.
Successful entries typically combine the expertise of hydrologists, civil engineers, landscape architects, and urban planners. Hydrologists must calculate precise peak flow mitigation, and landscape architects specify engineered soil media and deep-rooted native vegetation that can survive 48-hour inundation. Structural engineers play a critical role, validating that subsurface modular storage systems can bear the load of commercial vehicle traffic above.
To see how these exact disciplines interact on successful local sites, review our technical articles covering Gulf Coast soil constraints. Teams missing just one of these core competencies usually fail to produce a viable, competition-ready design.
Meeting the Hydrologic Performance Thresholds
Aesthetic appeal holds little weight if the infrastructure fails during a flood. To qualify for judging, teams must prove their design fundamentally alters the site’s runoff trajectory. The competition requires participants to submit precise hydrographs demonstrating that their proposed site achieves post-development runoff rates at or below pre-development levels.
Your team must validate these figures for the 5-year, 10-year, and 100-year storm events. This requires deep proficiency with advanced hydrologic simulation software. Evaluators scrutinize the void space calculations within your permeable sub-bases and the exact drawdown times of your bioretention cells. Reviewing the criteria published by the Harris County Flood Control District provides the exact precipitation frequencies your team must use to build these baseline models. If your models rely on generic national averages rather than local Harris County rainfall data, the jury disqualifies the entry.
Selecting a Design Challenge Category
Competitors do not invent their own project sites. The forum provides real properties facing legitimate drainage constraints, supplied by local developers and municipal authorities. Teams must choose one of three specific design challenge categories that match their firm’s primary expertise.
| Challenge Category | Typical Site Profile | Primary Engineering Focus |
| Green Roadway | Public right-of-ways and streets | Right-of-way biofiltration and permeable transit lanes |
| Suburban Residential | Master-planned community tracts | Decentralized lot-level detention and bioswales |
| Urban Redevelopment | High-density commercial districts | Subsurface vault storage and structural soil cells |
Selecting the right category dictates your entire project approach. A team heavily staffed with urban planners and structural experts should target the Urban Redevelopment category rather than the Suburban Residential tract.
Economic and Regulatory Validation
The competition judges include actual municipal directors, conservative engineering executives, and prominent commercial developers. They evaluate your submission on environmental impact, and they demand financial viability. Your entry must demonstrate that the proposed green infrastructure is more marketable and less expensive to construct than a conventional gray pipe-and-pond approach.
Teams must calculate the exact cost per cubic foot of stormwater treated. By eliminating massive dry detention basins and replacing them with distributed surface features, your design should recover buildable land, thereby increasing the site’s overall real estate value. The Houston-Galveston Area Council’s sustainable design guidelines offer excellent templates for proving the lifecycle cost benefits of these systems to skeptical developers. Proving this economic advantage is the final, non-negotiable requirement for anyone hoping to win the competition.