...::: Hydroecological Characterization of Arroyo Alamar :::... Introduction Objective Methodology Study area Hydrological design Design flood Water-surface profiles Results DESIGN FLOOD   The U.S. Army Corps of Engineers HEC-RAS (Hydraulic Engineering Center - River Analysis System) model was used to calculate the water-surface profiles. A hydrological study to determine design flood discharges for 2-yr to 1,000-yr frequencies has been performed by Ponce (2000). The freeboard hydrograph should be designed to safely pass the Probable Maximum Precipitation. In Mexico, the PMP is approximated as the 10,000-yr frequency. The Gumbel method was used to calculate the 5,000-yr and 10,000-yr flood discharges. The Q (5000-yr) is 2140 m3/s and the Q (10,000-yr) is 2290 m3/s. Hydroecological design Gabion systems Design velocities Design features Horizontal alignment Vertical alignment Rehabilitated stream Present conditions Conclusions Portal HYDROECOLOGICAL CHARACTERIZATION OF ARROYO ALAMAR, TIJUANA, BAJA CALIFORNIA ...::: Hydroecological Characterization of Arroyo Alamar :::...