Downstream effects of dams on alluvial rivers. by G.P. Williams and M.G. Wolman.
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Downstream effects of dams on alluvial rivers. by G.P. Williams and M.G. Wolman.

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Published by Dept. of the Interior in Washington .
Written in


  • Rivers - Effects of dams on

Book details:

Edition Notes


ContributionsWolman, M.G.
The Physical Object
Pagination83 p.
Number of Pages83
ID Numbers
Open LibraryOL22018030M

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Williams and Wolman is a classic and comprehensive work that documents dam-induced changes on rivers in the United States. Collier, M., R. H. Webb, and J. C. Schmidt. Dams and rivers: A primer on the downstream effects of dams. US Geological Survey Circular Tucson, AZ: US Geological Survey. E-mail Citation». The U.S. Geological Survey is charged with monitoring the water and mineral resources of the United States. Beginning in , the Survey established a network of water gaging stations across most of the country's rivers; some also measured sediment content of the water. Consequently, we now have valuable long-term data with which to track water supply, sediment transport, and the occurrence. Williams, G.P. and Wolman, M.G., , Downstream effects of dams on alluvial rivers. U.S. Geological Survey Professional Paper , 61 p. Williams, H.F.L. ( Williams, G.P. & Wolman, M.G. () Downstream effects of dams on alluvial rivers. U.S Geol. Survey Professional Paper, 6 CAPTIONS TO FIGURES Table 1 Physical and hydrological parameters of the catchments; hydrological parameters have been measured in the period // Fig. 1 The studied catchments, river network, monitoring.

@article{osti_, title = {Downstream effects of dams on alluvial rivers}, author = {Williams, G.P. and Wolman, M.G.}, abstractNote = {This study describes changes in mean channel-bed elevation, channel width, bed-material sizes, vegetation, water discharges, and sediment loads downstream from 21 dams constructed on alluvial rivers.. Most of the studied channels are in the semiarid western.   1. Introduction. One of the greatest modifications of the fluvial landscape in the Anthropocene is the construction of dams. Approximately , dams have been constructed worldwide (Gleick, , Friedl and Wuest, ).On a global scale, river damming has increased the mean residence time of river waters from 16 to 47 days and has increased the volume of standing . Williams and Wolman () state that the North Canadian River required more than km and possibly as much as km of channel distance to provide enough sediment to have pre-dam concentrations. On the Missouri River (8 km downstream from Gavins Point dam), post-dam sediment load is 1% of pre-dam conditions; km downstream. Normalized depth of degradation (D) as a function of normalized time (t) for 12 rivers after dam closure. Reproduced, with permission, from Williams, G.P. and Wolman, M.G.

Besides Geoff Petts, you can also refer to the report by Williams and Wolman (Downstream effects of dams on alluvial rivers,, Williams, G. P.; Wolman, M. G. USGS Professional Paper: ).   Of the rivers investigated by Williams and Wolman (), one half the total amount of width change could occur in as little as 1 or 2 months after dam closure, i.e. about 5% of the total period the rivers were supposed to change due to dam construction. Most of the rivers reached this amount between 1 1/2 and 2 years. 1. Introduction [2] Large dams disrupt flow and sediment delivery downstream, thereby inducing channel change that may extend hundreds of kilometers [Stevens, ; Borland and Miller, ; Schumm, ; Petts, ; Williams and Wolman, ; Andrews, ; Carling, ; Brandt, a; Grant et al., ].Some of these channel changes adversely impact cities and towns, agriculture, native.   Abstract. This chapter provides a brief overview of effects of dams and barrages as: effects of dams on river channels, effects of gravel mining on river channels, effects of denudation on river channels, channel incision, bed coarsening and loss of spawning gravels, gravel replenishment below dams, sediment sluicing and pass-through from reservoirs, channel narrowing and fine .