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<br />GENERAL PROCEDURE FOR GAGING STREAMS
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<br />13
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<br />Automatic computations
<br />
<br />If stage is recorded on a digital tape at the
<br />station, the computations just outlined ",re per-
<br />formed by "'n electronic computer. The input
<br />to the computer is the digital record of stage,
<br />with", list of any datum corrections, and the
<br />disch",rge rating, with a list of any necessary
<br />shift corrections. For stations at which the
<br />stage-fall-discharge type of rating is applica-
<br />ble, the digital-tape records of stage from both
<br />the primary and the auxiliary gages are fur-
<br />nished to the computer. In addition to the stage-
<br />discharge relation, supplementary information
<br />such as the stage-fall relation and the relation
<br />of fall ratio yersus discharge ratio are supplied.
<br />The output from the computer consists of two
<br />forms. The first includes a listing of the maxi-
<br />Inum, the minimum. and the mean gage height
<br />fOJ' ench day, hihourly lIage heights for each
<br />day, alld the mean discharge for each day. The
<br />:-;e{'oncl fOrln includes n. listing' of mean daily
<br />dischaqres alld the mOllthly alld yearly sum-
<br />B",ries ill the same format as is nse{! for publi-
<br />""tioll. Besides heill!! puhlished, the daily dis-
<br />dml'g'es and yearly sU1l.unaries are stored on
<br />mag-netic- tape. Corre('tions arc made on the tape
<br />where lleeeSSal'V nfter the ('omputed reeol'ds are
<br />I"l..'vit'wed hv el;o-ineeriu2' I)ersollncl in the dis-
<br />. ft .
<br />tl'id. offices.
<br />
<br />Publication of Records
<br />
<br />Through Septelllhel' ;)(1. WHO, the reeords of
<br />dis('hal'~c of stl'eam:o; <\11<1 content:; of lakes or
<br />l'eser\'oir~ were published in an annual series
<br />
<br />r~
<br />
<br />of Geological Survey water-supply papers en-
<br />titled "Surface Water Supply of the United
<br />States." Each volume in the series covered an
<br />area whose boundaries coincided with those of
<br />certain natural drainage basins.
<br />Beginning with the 1961 water year, stream-
<br />flow records and related data have been released
<br />by the Geological Sur,'ey in annnal reports on
<br />a State-bonndary basis. These reports are pre-
<br />pared and released by the district offices soon
<br />after the close ofthe water year.
<br />Daily discharges ",nd annual summaries are
<br />also being published in water-supply papers at
<br />intervals of 5 years. The first series to be pub-
<br />lished covers the period 1961-65.
<br />
<br />References
<br />
<br />Benson, ),f. A., and Dalrymple, Tate, 1967, General
<br />field and office procedures for indirect measure.
<br />ments: U.S. Oeol. SUr\'ey Techniques 'Vater-Re-
<br />SQu:rees Iov., book 3, chap. AI, SOp.
<br />Bodhaine, G. L., 1968, J.Ieasurement of peak discharge
<br />.at culverts by indirect methods: U.S. Geol. Survey
<br />Techniques \Vater-Resources 1m'., book 3, chap.
<br />.\3, 60 p.
<br />Dalrymple, Tate, and Benson. M. A... 1967, :\leasure-
<br />ment of peak discharge by the slope-area method:
<br />U.S. Geol. Survey Techniques 'Vater-Resources
<br />Iov., book 3, chap. A2. 12 p.
<br />Hulsing, Harry. 1967, :\Ieasurement of peak discbarge
<br />ut dams by indirect methods: U.S. Geol. Survey
<br />Techniques \Vater-Resources Iuy.. book 3, chap. A;j,
<br />29p.
<br />~latthai. H. F., 1067. J.Ieasnrement of lleak discharge
<br />at ,vidth eontrnction:-; by illdiaect methods: U.S.
<br />Geol. Surve~. TeC"hniqu€'S 'Va.r.Resources Iny.,
<br />book 3, chap. A4, 44 p.
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