Status of Regional Aquifer-System Analysis Program In Reply Refer To: December 27, 1991 Mail Stop 411 OFFICE OF GROUND WATER TECHNICAL MEMORANDUM NO. 92.02 Subject: Status of Regional Aquifer-System Analysis Program The Regional Aquifer-System Analysis (RASA) Program is one of the most significant and most favorably received long-term programs of the Water Resources Division. You may be interested in knowing what results the program has produced as of today. Attached are some statistical data that illustrate the overall accomplishments of the program as of May 1991. The total appropriation to the RASA program, from FY 1978 to FY 1991, was about $178 million, of which $135 million was directly allocated to the RASA projects (attachment 1). As of May 1991, the RASA Program has completed 876 papers/reports (excluding abstracts) and many reports are still in review or in preparation. About one-half of the reports were published either as U.S. Geological Survey (USGS) formal publications or as scientific journal articles; the rest were published as informal USGS publications (attachment 1). A significant by-product of the RASA Program is the compilation of a ground-water atlas at a regional scale. This atlas not only summarizes RASA results but also regionalizes ground-water information resulting from various studies conducted for decades by the USGS and other agencies. This atlas will be published as U.S Geological Survey Hydrologic Investigations Atlas HA-730 and will contain 14 chapters. One of the chapters presents an overview of ground-water conditions nationwide, describes effects of development and land uses such as saltwater encroachment and land subsidence, and includes maps that show locations of major aquifers on a national scale. The remaining 13 chapters describe geologic and hydrologic conditions for major aquifers in each regional area and collectively become 13 regional segments that cover 50 States and the Commonwealth of Puerto Rico. The RASA Program also heavily supports the National Research Program (attachment 2) for long-term benefits to the science of hydrology and hydrogeology. Overall, the RASA Program has had outstanding results. However, some management lessons have been learned. These experiences will help the Water Resources Division to improve execution of future long-term programs. Also attached for your information is a copy of Water-Resources Investigations Report 91-4122 entitled "Bibliography of Regional Aquifer-System Analysis Program of the U.S. Geological Survey, 1978-91," by Sun and Weeks. Office of Ground Water Technical Memorandum No. 92.02 2 If you have questions on the RASA Program or need additional copies of the attached report, please telephone Ren Jen Sun at FTS 959-5005 or (703)648-5005. Joseph S. Rosenshein Acting Chief, Office of Ground Water 3 Attachments Distribution: A, B, S, FO, PO