MEASURING REGIONAL ECONOMIC-IMPACTS OF STREAMFLOW DEPLETIONS

Because of large upstream diversions for agriculture and an absence of policies to protect in-stream flows, flows in the Rio Grande near Tao s, New Mexico, routinely are low by midsummer, The reach is a popular whitewater run in the southwestern United States when flows are adequa te for river running. This article estimates the regional economic imp acts attributable to summer streamflow depletions. Economic analysis i ndicates that while lower water levels affect the number of people com ing to the region to raft on one river reach, low water levels had no effect on another nearby rafting area. Total expenditures and economic impacts were simulated for streamflows maintained at levels adequate for whitewater recreation throughout the summer season. These simulati ons indicate a 24% ($0.74 million) increase in rafting-linked expendit ures and a 25% ($0.94 million) increase in value added from rafting, c ompared to actual 1992 expenditures and value added.