AUSTIN, Texas (AP) — A draft report on how to avoid storm-related flooding in Austin and save lives says improvements could cost up to $4 billion.

The Austin American-Statesman ( ) reported Monday that the Flood Mitigation Task Force recommends increased public awareness with efforts including installation of emergency sirens.

Another suggestion would be to regularly create maps of "potential flood problem areas" and use that information to hold the line on development. Task force members also recommend more rain and flood gauges.

Flooding last fall in Texas claimed seven lives, with victims in the Austin, San Antonio and Houston areas. Central Texas flooding last May left two dozen people dead.

The Austin City Council on Thursday is expected to consider spending up to $1 million on a computer program that incorporates flood information.