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L-THIA
(long-term hydrological impact assessment)



Effects of Land Use Change on Hydrology and Nonpoint Source Pollution
Version 1.1


   Welcome to the tool for assessing the long-term hydrological and nonpoint source (NPS) pollution impact of urban sprawl and agricultural land use transitions for any location in the United States.

This is a joint effort between Purdue University and US EPA Region 5.

Select input to begin using the tool.   


For additional information, contact:

email: engelb@ecn.purdue.edu

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