ME Graduate Seminar: Antonia Arenas Amado

Thursday, April 9, 2020, 3:30pm to 4:20pm

Abstract:

Each one of Iowa’s 99 counties has been impacted by flooding events that exceeded the state’s capacity to respond and that ultimately led to flood-related presidential disaster declarations (FRDD). In the last three decades, the total number of FRDD in Iowa counties has exceeded 900 making flooding one of the most prominent environmental challenges that Iowa faces. Physically-based watershed modeling was used to evaluate the flood reduction benefits expected from both nature-based and structural mitigation strategies implemented in the Des Moines River watershed upstream from the City of Des Moines. Model baseline conditions were determined using a 17-year continuous simulation. The model was forced with hourly meteorological data from NLDAS and simulated streamflow hydrographs were compared against measurements taken at several USGS stations. The model was able to reproduce satisfactorily the observed hydrographs as well as seasonal and annual trends. Model baseline parameters were modified to simulate the implementation of cover crops, no-till practices, and native vegetation (e.g. tall-grass prairie) in the study area. In addition, the watershed model was used to evaluate the flood reduction benefits associated to a system of distributed storage built with ponds located in the watershed’s headwater catchments. This work presents, for all the conservation scenarios, quantification of changes in watershed’s hydrology as well annual peak flow reductions.

Zoom Meeting ID: 174 155 234

Individuals with disabilities are encouraged to attend all University of Iowa–sponsored events. If you are a person with a disability who requires a reasonable accommodation in order to participate in this program, please contact Donna Palmer in advance at 319-335-5670 or donna-palmer@uiowa.edu.