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<br />" <br /> <br />successful forecast and warning procedures have been developed, <br />at least partially under the spur of prospective precipita- <br /> <br />tion management. The occurrence of delayed avalanches, <br />after the storm has passed, is related partly to the augmented <br />part of the snow load and mostly to features of snow strati- <br />graphy and metamorphosis not affected by precipitation <br />management. To the extent that precipitation management <br /> <br />focuses attention on avalanche warnings and countermeasures, <br /> <br />it will tend to reduce, not increase the hazard." [13, <br /> <br />pp. 494-495] <br /> <br />The WPRS wi llcont inue its cooperative work with the Institute of <br /> <br />Arctic and Alpine Research, University of Colorado, and the Forest <br /> <br />Service to improve understanding and forecasting of avalanche events. <br />Avalanche conditions are included in the suspension criteria for winter <br />orographic cloud seeding projects, and will be included in suspension <br />criteria for this project. <br /> <br />Potential increases in flooding must be considered and avoided in the <br /> <br />design of a cloud seeding program. Models will be developed to assess <br /> <br />the interaction of snowpack levels, runoff levels, and flooding events. <br />A review of the historical record and model calculations will provide <br />information needed to set cutoff levels for cloud seeding when the <br /> <br />snowpack reaches a certain IIpercent of normalll (average). Project <br /> <br />suspension criteria will be effective automatically when the cutoff <br />, <br /> <br />level is reached to prevent increasing flood hazards in a seeded <br /> <br />area. <br /> <br />23 <br />