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A METHOD OF MEASUREMENT <br />A METHOD OF MEASUREMENT <br />Measure siltation in a working irrigation <br />Measure siltation in a working irrigation <br />? <br />? <br />reservoir by establishing a GPS grid of any <br />reservoir by establishing a GPS grid of any <br />proposed reservoir sampling area. <br />proposed reservoir sampling area. <br />Using a specially equipped pontoon boat, <br />Using a specially equipped pontoon boat, <br />? <br />? <br />collect core samples of the reservoir bottom <br />collect core samples of the reservoir bottom <br />at each of the grid data points. <br />at each of the grid data points. <br />The depth and location of deposited siltation <br />The depth and location of deposited siltation <br />? <br />? <br />can then be plotted, quantified, and water <br />can then be plotted, quantified, and water <br />storage losses calculated. <br />storage losses calculated. <br />