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Title:Development of criteria for shore protection against wind-generated waves for lakes and ponds in Illinois
Author(s):Bhowmik, Nani G.
Contributor(s):Song, Ji-Ang; Illinois State Water Survey; University of Illinois at Urbana-Champaign
Subject(s):Water resources center
Water resources center--Illinois
Hydrology and hydraulics
Bank stabilization
Shore protection
Wind (meteorology)
Geographic Coverage:Illinois (state)
Abstract:A practical design criteria is proposed to stabilize lake shores against wind waves. The wind waves in inland waterways such as rivers, canals, or lakes can and will cause substantial erosional damage if the waterway shore does not have natural or artificial protection. The orientation of the main watersheds and the general wind movement during part of the year in Illinois are conducive to the generation of damaging waves in lakes. Extensive lake shore erosion caused by wind waves is present in Illinois. A methodology was developed for estimating the height of wind waves in any lake for a given wind condition. Maximum wind speeds from five climatological stations in and around Illinois for the period of 1950-1972 were analyzed and a table was prepared showing the maximum wind speed for various durations and return periods. Statistical analysis of wind wave data collected from Carlyle Lake indicated that Rayleigh distribution fitted the wave height distribution reasonably well and that the nondimensional energy spectra followed (f/f,,)-5 rule in the equilibrium range of frequencies. Boat-generated wave heights fitted Rayleigh distribution to some extent and a relationship was developed relating boat speed, maximum wave height, distance between the boat and the wave gage, and the draft of the boat. From a consideration of various forces and physical properties of riprap particles and water, a relationship was developed to estimate the stable weight of riprap particles. Recommendations as to the proper selection of gradation, range of sizes, thickness of riprap particles and their size distribution, and gradation and thickness of filter materials were also incorporated. A design procedure was developed and one specific design problem was solved showing in detail all the steps involved in an actual design problem.
Issue Date:1975-09
Publisher:University of Illinois at Urbana-Champaign. Water Resources Center
Genre:Report (Grant or Annual)
Sponsor:U.S. Department of the Interior
U.S. Geological Survey
Rights Information:Copyright 1975 held by Nani G. Bhowmik
Date Available in IDEALS:2016-05-23

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