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

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Presentation transcript:

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

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?

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

St. Vrain Watershed

Catchments and GagesLand Cover

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

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

Legend Age Age 85 +

Legend Age Age 85 +

Legend Age Age 20-24

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

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

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

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

Questions