This document presents the methodology and objectives of a hydrological and flood risk study for the Lerez River in Spain. The objectives are to delineate the riverbed and areas of influence, and define flood zones for return periods of 5, 25, 100 and 500 years. The methodology includes defining the catchment area and characteristics, calculating peak discharges, modeling flow using HEC-RAS, and approximating flood zones. Hydrological calculations are presented to estimate maximum rainfall and runoff for different return periods to analyze flood risk.
29. Rio Lerez
Plan: Plan 01
25/04/2009
Lerez Lerez
338
Legend
EG T500 años
EG T100 años
WS T500 años
Crit T500 años
EG T25 años
WS T100 años
Crit T100 años
336
Crit T25 años
WS T25 años
EG T5 años
WS T5 años
Crit T5 años
Ground
E lev ation (m)
334
332
330
328
0
100
200
300
Main Channel Distance (m)
400
500