BUILDING & GROUNDS - Data Collection--Recording Short Period Hydrologic Transients MEMORANDUM NO: WD70.027 DOCUMENT TYPE: WD NUMBER: 70.027 ISSUE DATE: 08/25/69 PRIMARY SUBJECT: BUILDING & GROUNDS ABSTRACT: DATA COLLECTION--RECORDING SHORT PERIOD HYDROLOGIC TRANSIENTS STATES THAT EACH DISTRICT SHOULD WEIGH CAREFULLY THE RETENTION OF ANALOG RECORDERS, OR THE PARALLEL OPERATION OF ANALOG AND DIGITAL RECORDERS FOR ONE OR MORE SELECTED GAGING STATIONS ON LAKES, STREAMS, OR WELLS THAT HAVE EXHIBITED SIGNIFICANT RESPONSE TO SEISMIC EFFECTS. DISTRIBUTION: A, B, S, FO, PO DISTRIBUTION DATE: / / STATUS: CURRENT SUPERSEDES: SUPERSEDED BY: