PROGRAMS AND PLANS - Updating Streamflow/Basin Characteristics File In Reply Refer To: August 22, 1975 EGS-Mail Stop 415 SURFACE WATER BRANCH TECHNICAL MEMORANDUM NO. 76.03 SUBJECT: PROGRAMS AND PLANS - Updating Streamflow/Basin Characteristics File This memorandum is a reminder to update streamflow characteristics such as the T-year floods in the Streamflow/Basin Characteristics File. A propitious time to update this file is when log Pearson type III frequency curves are developed in flood-frequency and/or low flow studies. This file is a valuable asset both to the field and national headquarters. Multiple regression analyses are much more conveniently made by use of this file in combination with a variety of STATPAC programs. Instructions for updating the file will be found in Water Resources Division Memorandum No. 74.127. Harry H.Barnes, Jr. Chief, Surface Water Branch WRD Distribution: A, B, FO-L