Estimating a BFE with Quantum GIS – Instructions for estimating a cross section profile and stream flow for use in estimating a Base Flood Elevation with Quick-2 or HEC-RAS
GIS Software for Floodplain Management
Quantum GIS – a powerful Open Source GIS program.
National Streamflow Statistics – USGS software to estimate stream flows and return periods
FEMA Quick-2 – software for simple calculations of water elevations given a cross section and stream flow
HEC-RAS – hydraulic software developed by US Army Corps of Engineers