Issues of social and economic inequality are increasingly becoming areas of study for archaeologists; however, little work has been done on the uniform application of analytical methods. Here we assess the use of the Gini index for determining wealth inequality in eight Prehispanic central Mexican contexts. We analyze house size at the Late Postclassic sites of Capilco (village), Cuexcomate (town), and Yautepec (city), all in the state of Morelos. Agricultural field sizes for two communities described in a Nahuatl-language census immediately after the Spanish conquest are also analyzed. Our final context is the Xolalpan phase apartment compounds at Teotihuacan. Using these case studies we discuss methodological issues concerning the use of Gini indices to infer social inequality with archaeological data. We find that the Gini index, when applied following the proposed methodological standards, serves as a useful tool for the quantification of inequality across multiple archaeological case studies.

Hydrologic conditions in the Delaware River basin varied from deficient to excessive to deficient during the year. The drought-warning status of late 1982 was continued to March 27, 1983. Despite the reservoirs filling and spilling in April, their storage declined to the droughtwarning level by November 4, as defined by a recommendation of the parties to the Decree. Deficient runoff occurred in December, September and October; runoff in April, May and June was excessive. As a result of the deficiencies toward the end of the year, the rates of diversions and target flow for Mbntague were reduced November 9-30 to conserve water. Diversions from the basin to New York City and to New Jersey were below limits authorized in the Decree. Releases from the reservoirs were made as prescribed in the Decree or the temporary reductions due to water supply deficiencies. The hydrologic procedures developed previously were used to guide operations in this office.