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<br />22 <br /> <br />TECHNIQUES OF WATER-RESOURCES INVESTIGATIONS <br /> <br />. <br /> <br />TYPE X CULVERT AREA AND CON- <br />VEY ANCE CANNOT BE INTERPOLATEDu <br />HEIGHT = hhhhh. hhhh. . . .. Explanation: The <br />trial depth is outside the range of depth of <br />the culvert barrel. The next discharge is <br />tried. For type 3 flow, check tail water ele- <br />vations on card 6: elevations other than the <br />last one should not be greater than D + base <br />elevation. <br /> <br />REFERENCES <br /> <br />Benson, M. A., and Dalrymple, Tate, 1967, <br />General field and office procedures for <br />indirect discharge measurements: U. S. <br />Geo!. Survey Techniques Water-Resources <br />lnv.. book 3. cbap. AI, 30 p. <br /> <br />Bodhaine, G, L., 1968, Measurement of <br />peak d~scharge at culverts by indirect <br />methods: U. S. Geol. Survey Techniques <br />Water-Resources Inv.. book 3, chap. A3, <br />60 p. <br /> <br />Lara, O. G., and Davidian, Jacob, 1970, <br />Preparation of input data for automatic <br />computation of discharge by slope- area <br />method: U. S. Geol. Survey Techniques <br />Water-Resources Inv., book 7, chap. C2, <br />14 p. <br /> <br />Matthai, H. F., 1967, Measurement of peak <br />discharge at width contractions by indirect <br />methods: U. S. Geo!. Survey Techniques <br />Water-Resources Inv.. book 3. chap. A4, <br />44 p. <br />