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LOW WATER CROSSINGS Austin is criss-crossed with creeks and tributaries, with many bridges and roadways that go over these waterways. Low water crossings are a silent hazard until a flash flood hits. Technically, a low water crossing is a roadway that provides a firm surface for vehicles to travel across a waterway. This roadway is clear most of the year during periods of ordinary stream flow but are impassable to traffic during periods of high water. During a flash flood, these low water crossings become dangerous due to water moving across the roadway. 75% of Austin flood fatalities are vehicle-related! If you have to cross a low water crossing to get to and from your home, discuss with your family in advance what to do if the water is over the road and you can't get away from the house or can't get home. During a storm, visit the Emergency Conditions web page for a list of road closures. Never, ever, under any circumstances drive through water even if there is no barricade. Visit our during a flood web page for more information. Click on a low water crossing link below to view a location map: Map Region Low Water Crossing Numbers Bull Creek Region 1 - 7 and 10 - 14 Cameron Road 40 - 41 Colton-Bluff Springs Road 60 Old San Antonio 51 Southwest Region 20 - 21, 50 Thornberry 70 Wasson Road 22 Waters Park Region 30 -34 Hazards in Austin  —  Before A Disaster During A Disaster  —  After A Disaster Low water crossing maps courtesy of the City of Austin Watershed Protection & Development Review Department.