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After heavy rain, Comal staff highlight new low-water crossing monitoring and high-water warnings
Summary
County staff demonstrated new low-water crossing monitoring and high-water warning systems after a heavy rain; data showed Cibolo Creek at Boerne peaked at 6,070 CFS and a crossing rose from 8 inches below the pavement edge to 25 inches over it in about 45 minutes.
Comal County staff told the Commissioners Court on May 29 that a recent rain event tested newly installed low-water crossing monitors and high-water warning equipment.
"The Cibolo Creek at Boerne, yesterday morning at 06:15, peaked out at 6,070 CFS," county staff member Robert Boyd said, and he showed website snapshots and field verification demonstrating real-time depth tracking and photos. Boyd described a rapid rise at a Blanco Road crossing where the level changed from "8 inches below the edge of pavement" to "25 inches over the edge of pavement" in about 45 minutes.
Boyd said the county has deployed a roadside closures tab on its website that displays active closures and snapshots from the crossings, and staff verified lighting and barricade activations in the field. He also described a separate high-water warning / siren system upstream and downstream of Canyon Lake that will be tested monthly; those sirens were not engaged during the recent event.
The court thanked staff for the work and a commissioner praised road crews for clearing trees and debris after the storm. The county intends to continue testing and make more of the monitoring data publicly accessible via its website.
