Giving Credit Where Credit Is Due

摘要

In the November/December issue of Environment, the article, "Saving the San Pedro River: Science, Collaboration, and Water Sustainability in Arizona" (pages 30-42) contained a draft version of the map on this page that was incorrectly attributed. The map, recently published by Stan Leake, Don Pool, and Jim Leenhouts of the United States Geological Survey (USGS), shows potential capture by groundwater wells of surface water that would otherwise be available to the river and riparian vegetation in the upper San Pedro basin, illustrating the differential effect on river flows of groundwater withdrawals in various parts of the basin.