Prepared by the Subcommittee for Revision of ASCE Manual 81 of the Standards Committee on Atmospheric Water Management of the Standards Development Council of the Environmental and Water Resources Instiute of ASCE

Guidelines for Cloud Seeding to Augment Precipitation provides practical details of using the cloud seeding technology. This newly revised manual incorporates pertinent background on the science and practice of weather modification by cloud seeding to augment precipitation. Topics include the societal, environmental, and economic aspects of precipitation enhancement by cloud seeding; legal aspects associated with weather modification operations; scientific basis; cloud seeding modes; and instrumentation and status of precipitation enhancement technology. The volume also includes an executive summary addressing the complex issues that arise with the development and application of the cloud seeding technology.

This manual will provide water resources managers with the resources to make decisions regarding the use of cloud seeding to increase available water supplies.