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<br />Preface____________________________________ <br />Abstract__ _ __ _ _ _ __ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ __ <br />Introduetion_______________________________ <br />General objective and procedures_____________ <br />Selection of gaging site_H_h_nhnnn_h__ <br />Artificial controls__ ___ _ _ _ _ ____ _ ____ _ _ _ __ _ ___ <br />Measurement of stage_____ ___ _ _ _ ___ _ _ ___ _ ___ <br />Methods of sensing stage__ _ __ __ _ _ _ _ _ __ _ __ <br />Water-stage recorders_ ____ _ _ __ __ _ _ ____ __ <br />Reference gages_ _ _ _ _ __ _ _____ _____ _ __ ___ <br />Discharge measurements_ ___ __ ___ _ ___ __ _ _ ____ <br />Current-meter measurements. _ _ _ _ _ _ _ _ _ _ _ _ <br /> <br />CONTENTS <br /> <br />Page <br />1I1 <br />1 <br />1 <br />1 <br />2 <br /> <br />Discharge measurements-Continued <br />Indirect discharge measurements__________ <br />Dilution method____ ________u_ _____ ____ <br />Discharge ratings____ ____ _____ _____ _ _____ ___ <br />Stage-discharge relations__ _ _ _____ _ ____ ___ <br />Complex discharge ratings_ ______ _____ ___ <br />Computation and preparation of discharge <br />records__________________________________ <br />Station analysis_ _ _ ____ ______ ___________ <br />Manual computations_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ <br />Automatic computations__ _ _ _ _ __ ________ <br />Publication of records_______________________ <br />References. _ __ ____ _ ____ ____ ____ _ __ ____ _ ____ <br /> <br />3 <br />5 <br />5 <br />6 <br />fl <br />fl <br />7 <br /> <br />FIGURES <br /> <br />1-10. Photographs: <br />1. Gage and natural coutrol, Little ~pokane River at Elk, Wash__ _ u__ <br />2. Gage, concrete control, outside gage on bridge, and an engineer making <br />a wading measurement, Kaskaskia River at Bondville, IlL____nn <br />:J. Concrete artificial control on :\.1ill Creek near Coshocton, Ohio_ _ _ _ __ <br />4. Artificial control on Delaware River near Red Bluff, N. Mex., with <br />Rhallow V-notch in the broad-crested weir h n n _ n _ n n n n _ n _ _ <br />1>. Bubble-gage digital-recorder arranp;ement. Gas tank on right; digital- <br />punch recorder on lefL_lo. _ _ _ _ _ _ _ _ __ __ _ _ _ ______ ______ _ __ _ _ __ _ __ <br />6. :\leasuring discharge with current meter by wadingnn__nunnu <br />7. :\Ieasuring discharge with current meter from brid~c over the Hudson <br />River at Poughkeepsie, N. Y _ _ _ _ _ ~ _ __ u __ u__ _____u __ _ u_ u~_ <br />K YADA (velocity-azimuth-dcpth~a~wmbly) equipment in use for meas- <br />urement from bridge____ __ __________u_u______nu______nn <br />H. Pressurized constant-rate injection tank~ for inJcction of dye into <br />stream8_____~~__________~__________________________________~ <br />10. Equipment for fluorometer testin~ of water samples in thc ficld__ _ _ _ _ <br /> <br />Page <br />2 <br />4 <br />S <br />5 <br />6 <br />8 <br />!l <br />9 <br />10 <br />11 <br />v <br /> <br />Page <br /> <br />7 <br />9 <br />10 <br />10 <br />12 <br /> <br />12 <br />12 <br />12 <br />13 <br />13 <br />1:1 <br />