USING GIS TO UPDATE A FIELD SERVICES PRICING MODEL & LEVERAGING GIS TO SUPPORT FIELD DATA COLLECTION AND PUBLIC EDUCATION.

USING GIS TO UPDATE A FIELD SERVICES PRICING MODEL & LEVERAGING GIS TO SUPPORT FIELD DATA COLLECTION AND PUBLIC EDUCATION John May, GISP

THE CHALLENGE Since 1992 TxDOT has had to comply with NPDES requirements Map and Inspect Outfalls Along TxDOT Roadways In Urbanized Areas

WHAT IS AN OUTFALL? The point of a conveyance at which a discharge enters waters of the U.S.

HOW MANY OUTFALLS DOES TXDOT THINK THEY HAVE? 1 stream crossing every 2,000 feet X 4 outfalls per crossing = 10.5 outfalls per mile 79,000 miles of roads X 10.5 = 829,500 outfalls Fortunately only urbanized areas need to be mapped

WHERE ARE THE URBANIZED AREAS?

FORT WORTH STUDY AREA 212 miles of TxDOT roads within city limits 559 estimated stream crossings 2,236 estimated outfalls

FORT WORTH STUDY AREA

FORT WORTH STUDY AREA TXDOT ROADS

FORT WORTH STUDY AREA CITY LIMITS

FORT WORTH STUDY AREA TXDOT ROADS IN FORT WORTH

FORT WORTH STUDY AREA FORECAST STREAM CROSSINGS

FORT WORTH STUDY AREA FORECAST CROSSINGS & STREAMS

FORT WORTH STUDY AREA GIS IDENTIFIED CROSSINGS

FORT WORTH STUDY AREA NOT ALL CROSSINGS ARE CROSSINGS

FORT WORTH STUDY AREA NOT ALL CROSSINGS HAVE OUTFALLS

FORT WORTH STUDY AREA OUTFALL LOCATIONS

FORT WORTH STUDY AREA FORECAST LOCATIONS

FORT WORTH STUDY AREA ACTUAL LOCATIONS

RESULTS 559 = Forecast crossings using TxDOT method 158 = Forecast crossings using GIS method 2,236 = Forecast outfalls using TxDOT method 632 = Forecast outfalls using GIS method 155 = Field verified outfalls (60 crossings) 10.5 = Forecast outfalls per mile (TxDOT method) 0.73 = Field verified outfalls per mile TxDOT method over predicts outfalls 14 fold!

RESULTS Analysis Zone TxDOT Roadway Miles Forecast outfalls Outfalls identified during field survey Outfalls Per Mile Fort Worth 212 2,236 155 0.73 El Paso 200 2,110 108 0.54 Totals 412 4,346 263 0.63

Leveraging Your GIS Data Field data collection can be tedious Locate the outfall Record an inspection Update a database back in the office Online GIS can streamline the work Web maps can be used for data collection Web maps can be used for reporting Web maps can be used for public education

Many Different Online Tools Available Arcgis Online GisCloud GeoCommons Mango Map MapCite Google Fusion Tables CartoDB Google Earth

ArcGIS Online

ArcGIS Online Pros Collaborative/Teams Location Sensors Supports Hyperlinks Private and Public Maps Good Basemap Selections ESRI Product Cons ESRI Product Expensive Certain Features Require Desktop Integration Limited GIS Functionality

GIS Cloud

GIS Cloud Pros Collaborative/Teams Location Sensors Supports Hyperlinks Private and Public Maps Data Import/Export Good Basemap Selections True GIS Functionality Cons Complex Interface PostGIS Requirements More a GIS than a Map Server

GeoCommons

GeoCommons Pros Collaborative/Teams Private and Public Maps Data Import/Export Good Basemap Selections Easy Interface Free Cons Does not support Hyperlinks No Editing Ability No Location Sensors Purhased by ESRI

Mango Map

Mango Map Pros Collaborative/Teams Private and Public Maps Supports Hyperlinks Data Import/Export Good Basemap Selections Easy Interface Free Cons No Editing Ability No Location Sensors

MapCite

Mapcite Pros Private and Public Maps Supports Hyperlinks Data Import Good Basemap Selections Easy Interface Cons Data Conversion Errors No Location Sensors No Data Export Expensive Bugs

Google Fusion Tables

Google Fusion Tables Pros Private and Public Maps Data Import Multiple Table Capabilities Attribute Editing Only Familiar Interface Free Cons Experimental No Hyperlink Support No Location Sensors Cannot Create Data on Map

CartoDB

CartoDB Pros Private and Public Maps Data Import/Export Attribute Editing Only Good Basemap Inexpensive Cons Data Conversion Errors No Location Sensors Cannot Create Data on Map

Google Earth

Google Earth Pros Public Maps Good Basemap Free Cons Data Import Requirements No Location Sensors Cannot Export data Requires Software Only Useful for Viewing

QUESTIONS? John May Technology Client Manager jmay@ieaworld.com