Follow the low water crossings that matter to your route

BexarFlood.org opens the same regional map as SARiverFlood.org. Each dot marks a monitored low water crossing: green means the road is open, yellow means water is rising, and red means it is closed. The River Authority says more than 200 HALT systems operate across its four-county jurisdiction, and the network continues to grow.

The helpful part is the subscription. Pick the crossings near home, work, school, or a regular errand and ask for text or email alerts when water covers the road. You do not need a message for every crossing in the basin to know your usual route has changed.

Check the map before leaving during heavy rain, then obey the equipment and crews on the ground. A website can help choose another road; it never makes driving around a closed gate, flashing signal, or barricade safe.