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The revised FEMA floodplain map, unveiled at Monday night’s city council meeting, reflects the decision of engineers to accept the estimated flow volume of the 1935 flood as its “100-year flood” standard. That flood, which washed away the 1892 bridge, was the largest in Llano’s recorded history at 380,000 cubic feet per second. Engineers had proposed a map based on a theoretical 100-year flood of 405,000 cubic feet per second, which would have placed much more Llano property inside the flood plain. The revision means only small changes, mostly in western Llano.