Zenia Hernandez GIS in Water Resources Modeling Commodity Movement in Texas.

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Presentation transcript:

Zenia Hernandez GIS in Water Resources Modeling Commodity Movement in Texas

TransCAD Transportation GIS Software Geographic Information Systems (GIS) Planning Modeling and Logistics Applications + Contents: TransCAD GIS- create and edit maps and geographic data sets, produce thematic maps, and perform spatial and geographical analysis Extended Data Model-storage and tools Transportation Analysis and Modeling-networks and operations research Data-library of geographic, demographic and transportation data Custom Application Development-programming

Modeling Commodity Flows GIVEN:  Origin-Destination Commodity Movement Models Commodity 1: Agricultural and Related Products Commodity 2: Hazardous Materials Commodity 3: Construction Materials  Origin and destination zone characteristics  Tonnage movement between origin county and destination county  Rail and road networks and minimum paths Determine and visually represent commodity flows for rail and road

Data Sources Census of Population and Housing National highway and rail networks Boundaries for states and counties Bureau of Economic Analysis (BEA) Economic Census GEOSTAT (Geospatial and Statistical Data Center)-Regional Economic Information System

Utility (“Attractiveness”) Utility=  0 +  1 x 1 +  2 x 2 …

Predict Mode Split

Tonnage Movements by Mode Assumptions: Capacity of a railcar is 100 tons. Capacity of truck is 40 tons.

TRANSCAD Dataview

Joined View

Rail and Road Tonnage by Commodity

Desire Lines Desire lines illustrate the flows of people or goods from point to point based on the values from a matrix. In this case, desire lines show the flow of different commodities between counties in Texas.

Commodity Flow from El Paso

Commodity Flow to El Paso

Why Model Commodity Flows? Analyzing the impact of a new highway network or rail network depending on commodity flows before constructing it. Predicting future commodity flows. Presenting ideas to policy-makers.

Questions?