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<br />002'7g1 <br /> <br /> <br />.' <br /> <br /> <br />\' ~i.' <br />~~ ~ <br /> <br />I <br />, ....... <br />:.... <br />"'~.." i <br />.' <br /> <br />Servicing a rain gage <br /> <br /> <br />bli) <br /> <br />.' .. ~. <br />-,- <br /> <br />Sampling bed material <br /> <br /> <br />Measuring streamflow by wading <br /> <br />Figure l,l-l,--U,S. Geological Survey personnel collecting <br />water-resource data, <br /> <br />5 <br /> <br />1.0 INTRODUCTION <br />1.1 Objective <br />