About

This interactive map focuses on the middle Tennessee flooding and allows you to view informative layers gathered from a variety of sources as well as location-based feeds, including traffic and road information, as well as YouTube videos.

Application

This application is powered by ArcGIS Server and the ArcGIS API for Flex version 2.0. This application takes advantage of the new ArcGIS Viewer for Flex which is currently in beta and not yet available to the public. You can download the publicly available Flex Sample Viewer 1.0 here.

ArcGIS Online Basemaps

This application includes basemaps from ArcGIS Online including:

Streetmap—The ArcGIS Online World Street basemap presents highway-level data for the world and street-level data for North America, Europe, Southern Africa, several countries in Asia, and more.
Satellite Imagery—The ArcGIS Online World Imagery basemap presents satellite imagery for the world and high-resolution imagery for the United States, Great Britain, and hundreds of cities around the world.
Topographic Map—The ArcGIS Online World Topographic basemap (aka "the community basemap") includes boundaries, cities, water features, physiographic features, parks, landmarks, transportation, and buildings.
Open Street Map (OSM)—OpenStreetMap is a free editable street map of the whole world. OpenStreetMap allows you to view, edit and use geographical data in a collaborative way from anywhere around the world.

Layers

YouTube Videos: The videos are added to the application using the YouTube API and Yahoo! Pipes. The YouTube data API allows you to request videos given a latitude and longitude position along with a search radius and keywords. From here we manipulate the response from YouTube in Yahoo Pipes and return JSON which is easily incorporated into the ArcGIS API for Flex.
News Feeds: We gather the headline news from various on-line news agencies and pass each link through the http://ws.geonames.org RSStoGeoRSS web service. This service can geocode RSS content from any RSS web link and return the content as GeoRSS. The service looks for geographic content in the text, like: “oil spill in the Gulf of Mexico…” and returns the appropriate geographic location. We use the Aggregated Live Feeds methodology to take the returned GeoRSS XML serve the data through ArcGIS Server as a map service.
Points of Interest: These points of interest were collected on May 3rd, 2010 and showcase locations of public interest that have been affected by the flooding event.
Traffic Cameras, Incidents, and Messages: TDOT smartway Information System provides a wealth of timely information in the form of GeoRSS feeds that can be consumed in applications built using the ArcGIS Web Mapping APIs.
Stream Gauge: This live feed data comes from USGS and is updated hourly. Stream gauges record current water resource conditions depicting real-time stream-flow compared to historical stream-flow for same day comparisons symbolized by Percentile.
Flood plain – Flood plain data provided by Metro Nashville and documents the floodway, 100 year floodplain, and 500 year floodplain. Learn more about floodplain management from FEMA.
Flood inundation – Flood inundation data provided courtesy of Esri Business Partner First American Spatial Solutions.

Weather warning – Live feed from USGS displaying current weather watches and warnings issued by NOAA’s National Weather Service.
Precipitation – RIDGE Radar service from NOAA’s National Weather Service updated every 15 minutes.
Davidson Imagery - Post disaster imagery for Davidson County taken May 3rd, 2010 provided courtesy of Metropolitan Government of Nashville.

Web Developers

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