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6 Recommendations The recommendations of the Hydrology Committee are: "1. The Hydrology Committee agreed that the state of the art with respect to flood flow frequency methods, as with most other hydrologic techniques, has not advanced to the point where complete standardization is feasible or appropriate. For that reason, the Committee recom- mends that a base method be adopted with provisions for using other methods where adequate justification is presented. "2. On the basis of current use by Federal agencies, availability of detailed instructions and computer pro- grams, and flexibility in application, the log-Pearson Type III distribution (with the log-normal as a special case) is recommended for adoption as a base method for flow frequencies. In those cases where information exists which indicates some other type of distribution or technique should be employed, such use should be acceptable provided appropriate justification is given. A concise summary of the log-Pearson Type III method is presented in Bulletin No. 13, April 1966, "Methods of Flow Frequency Analysis," prepared under the auspices of the Subcommittee on Hydrology, Inter-Agency Committee on Water Resources...!.! "3. In view of the importance of flood flow frequency estimates in the expanding field of water resources de- velopment and related programs for managing flood losses, continuing efforts by the Hydrology Committee are needed to encourage and coordinate efforts of the member agencies in improving existing techniques and procedures in this field. In this connection, the Committee will establish appropriate ad hoc work groups when required for specific tasks; major emphasis, however, will be directed toward bringing such matters to the attention of the full Committee. Some immediate problems requiring attention are outlined in Attachment 4. ,,2/ }) Now the Hydrology Committee, Water Resources Council. 2/ The material in Attachment 4 is given later in this pamphlet under the title "Additional Considerations in Flood Flow Frequency Analysis. "