Katy Morris: Project Manager Nick Down: Assistant Manager Travis Hamel: GIS Analyst

Freeman Ranch Flood Prediction Model Image Credit: Art Arizpe Prepared by GeoTrek – The Next Generation

Background Major precipitation event in October 2013 Led to flooding in Freeman Ranch BeforeAfter

Background People were trapped at the ranch Total fence property damage est. $140,000

Summary GeoTrek: The Next Generation began work on February 12 th after the acceptance of project proposal This progress report reiterates both the purpose and scope of our project Informs the interested parties of our current progress Shows a revised timeline

Purpose To create a flood inundation model of Freeman Ranch. With this model we hope to be able to provide data to better insure the safety of both human and livestock on the ranch. 1.Task 01: Gather and Process Data 2.Task 02: Create Flood Inundation Model 3.Task 03: Automate the Model and Compare Findings to Known Data The model will be able to show which of Freeman Ranch’s fence lines, roads, and structures are inundated at which times.

Scope The original scope of the project focused on the immediate boundaries of Freeman Ranch and prioritized three areas of importance when modeling flood inundation: Fences Access roads for employees Physical infrastructure As an addition and update to the scope of the project the watershed surrounding Freeman Ranch was also delineated and included as a possible area that influences rising waters on Freeman Ranch’s property.

Task 01 Methodology for preparing DEM This allowed for the isolation of the Sink Creek watershed and the Freeman Ranch terrain These steps provide us with the basemap of our flood model concentrating on the Freeman Ranch Area.

Task 02 if “waterLyr” is not noData increase cellValue else if if surrounding cells have water if highest neighbor value is greater than current cell value set cell to water value else do nothing Obtained grid-system for analysis, began designing model Created basic algorithm (below) Will become more complex as the project progresses Problem: Not knowing which values to use

Task 03 Use ArcGIS to automate the watershed Analyze the GIS of Freeman Ranch to determine which areas are inundated Compare our model to known data Compile a list of “High Risk Zones”

Revised Timetable 1/22 – Receive request for proposal from client 2/12 – Proposal to client 3/26 – Progress report to client 5/2 – Final project presentation to client Weeks with important dates

Conclusions GeoTrek: TNG will create a real-time flood model The original scope and timetable have been revised to create more accurate results Completed data acquisition and preprocessing Model and algorithm is a work in process Implementation and comparison will begin shortly Overall will aid Freeman Ranch to assess flood inundation

Participation Katy Morris: Project Manager, Editor Nick Down: Assistant Manager, Graphic Designer Travis Hamel: GIS Analyst, Primary Researcher

Questions?