HEC HMS for HEC RAS Users Part 1 of 4: Rainfall runoff routing vs rain on grid

To mark yesterdays release of the highly anticipated HECHMS Version 4. 9, weve put together some video tutorials showing how easy it is to use HECHMS to delineate catchments, watersheds and flow paths, which can be very useful in HECRAS models. Part 1: Introductory comparison of rainfall runoff routing (HMS) and rainongrid (RAS) modelling approaches 0:00 Introduction 0:48 HEC Program Background 2:56 Hydrology vs. Hydraulics 4:18 Rainfallrunoff model representations 4:50 Rain on grid model representations 6:37 Overview of Parts 2, 3, and 4 Part 2: Delineating watershed boundaries and flow paths in HECHMS Part 3: Using boundary and flow path shape files in HECRAS rainongrid models Part 4: Setting up a basic HECHMS model and comparing to HECRAS, manual delineations in RAS Mapper using GIS commands Here are some of the links we reference in the videos along with some additio