Member Login Menu

Policy Statement 275 - Atmospheric Water Resources Management


Approved by the Energy, Environment, and Water Policy Committee on January 22, 2018
Approved by the Public Policy Committee on May 8, 2018
Adopted by the Board of Direction on July 13, 2018


The American Society of Civil Engineers (ASCE) supports:

  • The careful and well-designed management of atmospheric water (also known as "weather modification" or "cloud seeding") for beneficial uses, such as irrigated agriculture, long-term water supply, hydroelectric generation, reduction of agricultural and structural hail damage, and suppression of certain types of fog.
  • Sustained resources for atmospheric water data collection, research and operational programs, and the careful evaluations of such efforts, including the assessment of extra-area and long-term environmental effects.
  • Freely disseminating the results and findings of all atmospheric water management programs and projects to the professional community, appropriate water managers and the public.


Atmospheric water management capabilities are still developing and represent an evolving technology. Longer-term commitments to atmospheric water resource management research and operational programs are necessary to realize the full potential of this technology.


Water resources worldwide are being stressed by competing demands generated by population growth and environmental concerns. As a result, regions have become more sensitive to year-to-year variations in natural precipitation. Well-designed management of atmospheric water offers the potential to significantly augment naturally-occurring water resources, while minimizing capital expenditures or construction of new facilities. Well-designed management of atmospheric water-management technology is essential for agriculture and water supply. ASCE, in conjunction with weather modification organizations, has developed materials providing guidance in the use of atmospheric water-management technology for dissemination to local communities and all levels of government worldwide. 

This policy has worldwide application
ASCE Policy Statement 275
First Approved in 1980