Little Cedar Bayou Improvements, Phases I and III

La Porte, Texas

Phase I: DCCM provided preliminary engineering, final design, and construction phase services for improvements to the Little Cedar Bayou inline detention basin. Improvements were required to reduce negative impacts to the downstream watershed after major storm events. Key design and permitting features included:

  • Adding 220 acre-feet in storage volume
  • Land acquisition
  • A reinforced concrete control structure at the crossing of SH 146
  • Harris County Flood Control District approval
  • USACE permit for mitigation of impacts to regulatory waters

Phase II: DCCM provided preliminary design, final design, and construction phase services for 2,500 feet of channel widening improvements in La Porte. The channel widening passes through residential and commercial areas. The project allows this section of Little Cedar Bayou to handle major storm events without negative impacts to the downstream watershed. Services included the following:

  • Land acquisition allowing for widening the channel right-of-way (ROW) from 60 feet to 140 feet
  • Design elements incorporated backslope drains, riprap, grade and slope protections, and new storm sewer outfalls
  • Funding for the project was administered through the Texas GLO.
  • USACE permit
  • Coordination with Harris County Flood Control District and USACE.

Changes in USACE’s policy occurred during the project regarding the process for obtaining USACE permits. DCCM proactively met with USACE and modified the proposed channel design to incorporate the use of natural stream design techniques. USACE approved the permit for this project as a result of DCCM’s early coordination. The initial project schedule was maintained throughout the project duration. This project successfully provided flood reduction in adjacent and upstream neighborhoods.

At a Glance

$1.4M

Project Budget

220

Acre-Feet Storage Volume

2,500

Channel Widening

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