{ "item_title" : "Discharge Measurements at Gaging Stations", "item_author" : [" Vernon B. Sauer", "D. Phil Turnipseed "], "item_description" : "The techniques and standards for making discharge mea- surements at streamflow gaging stations are described in this publication. The vertical axis rotating-element current meter, principally the Price current meter, has been traditionally used for most measurements of discharge; however, advancements in acoustic technology have led to important developments in the use of acoustic Doppler current profilers, acoustic Dop- pler velocimeters, and other emerging technologies for the measurement of discharge. These new instruments, based on acoustic Doppler theory, have the advantage of no moving parts, and in the case of the acoustic Doppler current profiler, quickly and easily provide three-dimensional stream-velocity profile data through much of the vertical water column. For much of the discussion of acoustic Doppler current profiler moving-boat methodology, the reader is referred to U.S. Geo- logical Survey Techniques and Methods 3-A22 (Mueller and Wagner, 2009).", "item_img_path" : "https://covers4.booksamillion.com/covers/bam/1/50/022/261/1500222615_b.jpg", "price_data" : { "retail_price" : "17.99", "online_price" : "17.99", "our_price" : "17.99", "club_price" : "17.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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