Reuse: This item is offered under a Creative Commons Attribution-NonCommercial-ShareAlike license You may reuse this item for non-commercial purposes as long as you provide attribution and offer any derivative works under a similar license. Used this activity? Share your experiences and modifications Learning Goals Make sure you have HEC-RAS available on school or personal computers prior to the start of the unit. The outcome will be the inundation extent corresponding to the 100-year event along the reach of the Wabash River near Lafayette, IN. Students will learn the basics of hydraulic modeling using HEC-RAS to simulate the flow hydraulics using one-dimensional steady state assumption. The objective of this unit is to perform hydraulic modeling on a reach of Wabash River near Lafayette, Indiana to estimate water surface elevation and extent corresponding to a 100 year flow.
Thus we must know how to translate this flow value into the water depth, velocity and the corresponding extent to understand its impact. The flow or discharge value in a river does not mean much to a lay person or a decision maker because this flow can be insignificant on a big river or can be dangerous on a small creek.