(This measure has not been amended since it was introduced. The summary has been expanded because action occurred on the measure.)
Inland Empire Perchlorate Ground Water Plume Assessment Act of 2011 - Directs the Secretary of the Interior, acting through the Director of the United States Geological Survey (USGS), to complete a study of water resources in the Rialto-Colton Basin, California, including: (1) a survey of groundwater resources in the Basin; and (2) a characterization of surface and bedrock geology of the Basin, including the effect of the geology on groundwater yield and quality. Requires the survey to include an analysis of: (1) the delineation of the aquifers in the Basin; (2) the availability of groundwater resources for human use; (3) the salinity of groundwater resources; (4) the identification of a recent surge in perchlorate concentrations in groundwater, whether significant sources are being flushed through the vadose zone, or if perchlorate is being remobilized; (5) the identification of impacts and extents of all source areas that contribute to the regional plume to be fully characterized; (6) the potential of the groundwater resources to recharge; (7) the interaction between groundwater and surface water; and (8) the susceptibility of the aquifers to contamination.