Sustainable Transportation Energy Pathways (STEPS)
Mishra, Gouri Shankar and Sonia Yeh (2010) Analysis of Lifecycle Water Requirements of Transportation Fuels: Corn-Based Ethanol - Model Version 1.1. Institute of Transportation Studies, University of California, Davis, Research Report UCD-ITS-RR-10-11
The model is part of a series exploring water footprint of future transportation fuels including bio-fuels and electricity. Other models currently under development examine the lifecycle water requirements of electricity from geothermal resources and concentrated solar power.
The model is available at: http://www.its.ucdavis.edu/download/UCD-ITS-RR-10-11.xls
The model description is available at: http://pubs.its.ucdavis.edu/publication_detail.php?id=1399 .