State law forces Travis County to plan siren installations; staff warn costs may exceed state grant

County staff told commissioners that Senate Bill 3 (and a companion bill) requires counties in specified July 2025 flood areas to install outdoor warning sirens with stream gauges at flash‑flood prone locations identified by the Texas Water Development Board. The companion appropriation (Senate Bill 5) provided $50 million statewide and a reimbursement cap of $1,250,000 to Travis County on a reimbursement basis; staff warned that installation costs alone may range from $5 million to $15 million and that ongoing maintenance could require $1–$3 million annually.

Julie Wheeler (project staff) told the court there are two main SB3 deadlines: a county plan due to TWDB by Dec. 31 and receipts for reimbursement due by Aug. 1 (for the initial reimbursement window). Wheeler said the county is launching a planning project and a pilot program to identify the highest‑risk sites for early siren installation (examples cited included Sandy Creek and Wilbarger). Wheeler added staff will work with LCRA and the City of Austin, both of which operate rain‑gauge networks that could supplement a county system.

Commissioners raised concerns about long‑term maintenance costs and whether the state would fund ongoing operations; staff said discussions with other impacted counties indicate legislative requests for maintenance funding may be needed but the near‑term outlook is uncertain. Staff emphasized the opportunity to refine the state’s initial site list and to identify locations where alternative warning systems (cellular alerts, targeted community notification) might be more appropriate than expensive sirens.

Court members asked staff to include a fiscal note in planning materials that estimates both installation and lifecycle costs so the court can weigh options before committing to countywide installations.