2011-02-182005-08http://hdl.handle.net/2346/16653The Agricultural Policy Environmental Extender (APEX) model was used to simulate playa lake hydroperiod in the Texas High Plains and the effect of sedimentation from agricultural operations on the storage capacity of playa lakes.application/pdfengAgriculturalPlaya lakeAgricultural cost of maintaining playa lake hydroperiod to preserve playa lake ecosystems in the Texas High PlainsThesisUnrestricted.