Friendswood engineers outline multiple drainage projects, warn of grant rules and property constraints

City engineering staff told the Friendswood City Council on Jan. 6 that several multi-agency drainage projects are advancing but face legal and funding constraints that could delay construction and increase local obligations.

Director of Engineering Hill Ards reported progress on multiple fronts: bids are being evaluated for the Clear Creek utility rack relocation project and staff expects an award; contractors will begin work on the City Center detention ponds’ clay lining after major excavation; the Deepwood Flood Control project was rebid after receiving only one response; and the French River regional stormwater detention basin project has rough grading underway and remains a multiagency effort involving Galveston County, the Galveston County Drainage District, Harris County Flood Control District and the U.S. Army Corps of Engineers.

Ards said the French River project’s estimated total cost has varied in planning documents, but the city’s current obligation was discussed at about $8 million in preliminary planning materials. He added that earlier estimates near $32.4 million were tied to a larger footprint and that a narrower initial footprint would place the project near $20 million; the final scope and cost remain subject to engineering and permitting decisions.

Property and grant restrictions: Engineering briefed the council on an immediate hurdle to accelerating several detention projects. Some candidate project parcels were acquired by the city with federal disaster-recovery or hazard-mitigation grants. Ards and staff said federal grant terms can restrict or prohibit conveyance of those parcels to other public entities without federal approvals. "[The drainage district] wanted to explore the possibility of having the city convey property to the drainage district," a staff presenter said. The city has proposed alternatives including a license agreement, but an interlocal conveyance is not yet executed because the city must clear federal and state grant conditions (including approvals from the Texas General Land Office and other federal authorities) before transferring ownership.

Payback risk and costs: Council members asked about the fiscal exposure if the city could not complete allowed projects and was required to return grant funds. Engineering described that buyout costs from older programs ranged in the millions: Tropical Storm Allison-era acquisition obligations and Hurricane Harvey buyouts make up long-standing program costs. An exchange at the meeting cited a rough figure of "in excess of $2 to $3 million" in potential payback exposure associated with earlier buyout programs, though staff said the aggregated buyout portfolio covered many properties and cautioned the figure was a general estimate.

Comprehensive master drainage plan: Staff said contracts were about to be executed for a 17-month comprehensive master drainage plan that will include significant public engagement, modeling of subdivisions and creek systems, and prioritization of neighborhood infrastructure improvements. Staff said the project’s scope will include older subdivisions that historically experienced more flooding because they were built before modern detention and storm-sewer requirements.

Why it matters: The projects are intended to reduce localized flooding in several parts of the city and to create detention capacity along Clear Creek and tributaries. But interlocal agreements, environmental reviews (including wetland determinations with the Corps of Engineers), and grant restrictions create implementation risk and potential local costs.

Next steps: Staff expects a bid award on the Clear Creek relocation soon, continued site work on City Center detention ponds, a rebid schedule for Deepwood, and kickoff of the master drainage plan in the coming weeks. The council asked staff to continue negotiations with drainage districts and to return with recommended agreements and more precise cost estimates.

Ending: Engineers told council that some projects may remain "open space" and not advance to constructed flood mitigation if interlocal agreements and federal approvals cannot be obtained, and that the comprehensive plan will guide which subdivisions and creek projects the city pursues next.