Laserfiche WebLink
<br />VIII <br /> <br />OONTENTS <br /> <br />13. Diagram illustrating determination of alternate depths from energy diagrams for a given cross section <br />14. Definition sketch of an open-channel flow reach ................................................................. ............. <br />15. Graph showing determination of distances required .for convergence of Ml and M2 backwater curves in <br />rectangular channels on .........u....... ................ <br />16-19. Sketches showing: <br />16. Effects of subdivision on trapezoidal section .................................. .......................... ........................................ <br />17. Effects of subdivision on a panhandle section .................... <br />18. Subdivision criteria afTice .................. ........................................................................................ <br />19. Subdivision criterion of Matthai ........ _............_............._.._..._......................................... <br />20, Graph of cross section in which subdivision could be dependent on expected elevations of water surface. <br />21-23. Sketches showing: <br />21. Subdivision of an approach cross section at a bridge ................................ .................... .................... <br />22. Establishment of the normal-depth profile in a short reach. <br />23. Flow around an island .................................................... <br />24. Graph of division of flow around an island ....... ............. <br />25, Sketch showing division of flow in multichannel reach ..................... <br />26. Sketch showing culvert with road overflow ..._....._............ . ...................... <br />27. Graph of composite rating curve for culvert with road overflow .......................................... <br />28. Hypothetical culvert hydro~raphs iIlustratinR' the effects of embankment storage <br />29. Sketch showing apportionment of width of embankment between two bridge openings . <br />30. Sketch illustrating division of flow at multiple-bridge openings _................... <br />31-33. Graphs showing: <br />31. Relation of form of bed roughness to stream power and median grain size. <br />32, Variation of Chezy C with median diameter of bed material for upper regime flows .................... <br />33, Relation of roughness coefficient to hydraulic radius and velocity for Rio Grande at Cochiti, <br />New Mexico ................_. ............... ........................................ <br />34, Sketch showing definition of a rating curve at the upper end of a long reach by means of the step- <br />backwater method. using convergence of M2 curves <br />35. Sketch of effect of encroachment of flood plains on normal valley cross section .........___........................... <br /> <br />p... <br />13 e <br />14 <br />17 <br />22 <br />23 <br />24 <br />24 <br />26 <br />26 <br />28 <br />31 <br />32 <br />33 <br />37 <br />38 <br />39 <br />39 <br />40 <br />42 <br />44 <br />46 <br />46 <br />47 <br /> <br /> <br />e <br />