I am doing a flooding analysis and would like to know how many roads would be flooded at certain elevations. The roads are in vector data format, while the elevation information is in raster. What tool could be used to find which roads are within certain levels in the raster data. Eg. Find roads that are below 5m

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There a several ways to solve this problem. One is to reclassify the raster so that any area less than 5 meters gets a value of 1 and everything above 5 meters gets a value of NoData. Convert the resulting reclassification to 'flood level 'polygons. Clip the roads based on the flood level polygons.

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