S

Seasonal Drought Outlook (SDO)/U.S., 66

Seattle, Washington conservation example, 185

Socioeconomic drought, 9-10

South Africa causes of drought (investigations),

151-152

drought assistance schemes,

152-154 drought definition, 150-151 and ENSO phenomenon, 157 forecasting systems, 154-155 history of drought, 150 importance of rainfed subsistence agriculture, 150 lessons in managing drought events, 138

new (post-1990) drought policy, 155-157 and emphasis on risk management (2002), 158 water supply and social welfare, 216

South Sudan (1998) drought/war, 20-21

Southern Africa food crisis (2002-2003), 19-20

Southern Oscillation Index (SOI), 35, 347

Spain, 383-384

drought (definition), 369-371, 371t drought experience (1990-95),

371-373, 372f forces/pressures in water stress situations global warming/potential effects,

376-377

trends in water demands,

377-378

water balance, 373-374, 374f, 375f, 375t response strategies (to drought)

early identification, 378-380, 381f system operation, 380, 382-383, 383f water management and planning framework, 368-369 Spatial characteristics of drought, 11-12

Standardized Precipitation Index (SPI),

56, 73, 75-76 "The steppe. See Dry areas Sudan, water harvesting techniques, 202

Surface Water Supply Index (SWSI), 56,

63, 73, 78-79 Sustainable development strategy, reducing drought impact, 7 Sylaba/sailaba, 210

Syria, water harvesting techniques, 202

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