Results of the Cazenovia Creek ICS model study showed that a 1.8-m(6-ft)-high weirequipped with nine piers and bordered by a bypass floodway is likely to retain ice well beyond the maximum recorded discharge for ice-jam floods since 1971. We feel confident that such a structure will prevent future ice-jam flooding of West Seneca and Buffalo, New York. This design was accepted by the U.S. Army Corps of Engineers, Buffalo District, and the structure is currently scheduled for completion by 1990. Once the structure is built, field data will need to be obtained in the following areas: Freeze-up and breakup conditions over several winters; Ice loads on the structure; Water levels immediately upstream of the ICS. These data are necessary for comparison with the results of the model study, and for future improvements in the design and techniques of hydraulic models involving ice processes. (edc).

Nonstructural ice control measures are used for reducing the frequency and severity of ice jam damages that do not rely on the use of a structure placed in the river. This report is a comprehensive review of current nonstructural ice control methods in use. Both advance measures and emergency response methods are addressed. where possible, the effectiveness of these methods has been assessed, and cost of application has been tabulated. In terms of development, some of these are still in their infancy, while others are well advanced in terms of available guidance and field experience. Nonstructural methods can be used to extend the operating envelope of structural measures and can play a role in an ice control strategy that uses both structural and nonstructural components to provide the desired results. There is little guidance currently available to predict the reduction in ice jam potential due to application of any of these measures. Further work in this area should focus on developing governing relationships that relate ice and river properties and meteorological conditions to ice jam potential and severity.

Technology of snow and ice control has changed considerably in the last decade, with the development of many cost saving techniques, equipment, and materials. Environmental concerns have forced a rethinking of old techniques and this book provides a detailed source of information on the subject.