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Flood Mapping: Hydrology and Communities 2013 Boulder Floods Presented by: Sandra Sweat Fall 2015 Professor: Dr. David Maidment.

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Presentation on theme: "Flood Mapping: Hydrology and Communities 2013 Boulder Floods Presented by: Sandra Sweat Fall 2015 Professor: Dr. David Maidment."— Presentation transcript:

1 Flood Mapping: Hydrology and Communities 2013 Boulder Floods Presented by: Sandra Sweat Fall 2015 Professor: Dr. David Maidment

2 Objectives Understand the relationship of hydrology and community data sources. Look at how people interact with flood events. Visualizations: What types of visualizations can be made to represent a flooded area – both in GIS and in other representations?

3 Hydrology USGS ArcMap connected data FEMA NOAA Community CMS Census 2010 National Weather Service ESRI Twitter Newspapers Journal and Government Papers Zip Codes Data

4 St. Vrain Watershed

5

6 Catchments and GagesLand Cover

7 Hello, FEMA. Resulting maps NFHL There are 12 data layers in the National Flood Hazard Layer. S_FLD_HAZ_AR A – 1% annual chance AE – 1% annual chance AO - floodway X – 0.2% annual chance

8

9 Census Target groups based on loss of life Age 15-24 Age 75+ Buildings Hospitals Dialysis Centers Nursing Homes

10 Legend Age 75-85 Age 85 +

11 Legend Age 75-85 Age 85 +

12 Legend Age 15-19 Age 20-24

13 Event Tracking – Creating a Timeline 1.Streamflow 2.Rainfall 3.Daily Camera Article 4.NWS Storm warnings 5.Twitter – manual searching

14 Time (YYYYMMDD hh:mm) Flow in cfs Rainfall in inches Boulder Creek at Orodell Fourmile Creek at Orodell Boulder Creek Near 75 th Hourly Rainfall Boulder Rainfall Accumulation Boulder Flow versus Rainfall September 9th-18th

15 Twitter 1.Twitter – manual searching Keyword search: flood, boulder, emergency, storm, precip, rain Date Range: 9/11 – 9/18 Agency Searches: NOAA, NWS, Boulder Police

16 Flow versus Rainfall Flow in cfs Rainfall in inches Time (YYYYMMDD hh:mm) Boulder Creek at Orodell Fourmile Creek at Orodell Boulder Creek Near 75 th Hourly Rainfall Boulder Rainfall Accumulation Boulder Twitter Storm Warnings Daily Camera

17 Questions

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