00000nam 2200000za 4500 9.849550 CaOODSP 20241203113641 cr ||||||||||| 180104s1986 onca|||fob f000 0 eng d CaOODSP eng eng fre n-cn--- En13-5/86-109E-PDF Lau, Y. L. Roughness of reverse flow over dunes and its application to the modelling of the Pitt River [electronic resource] / by Y.L. Lau. Burlington, Ont. : Hydraulics Division, National Water Research Institute, Canada Centre for Inland Waters, 1986. 14, [6] p. : ill. NWRI contribution ; 86-109 "June 1986". Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "Experiments using artificial dunes show that the friction factor is reduced when the steep face of the dune is on the upstream side, i.e., when the direction is reverse that of normal. Calculations using bed-form regime relationships show that this configuration of reverse flow over dune profiles could have existed in the Pitt River, causing the decrease in bed roughness which was found during the calibration runs"--Abstract. Includes management perspective and abstract in French. gccst Rivers gccst Modelling gccst Hydology Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; no. 86-109 (CaOODSP)9.844121 PDF 1.29 MB https://publications.gc.ca/collections/collection_2018/eccc/En13-5-86-109-eng.pdf