Spillway Design Storm definition

Spillway Design Storm means the storm upon which the hydraulic capacity of the spillway structure is designed.

Examples of Spillway Design Storm in a sentence

• The requirements in the table below shall apply in place of the Minimum Spillway Design Storm table under Rule .0205(e) of this Section.

• Tr. at 125:25 to 126:1, 468:20-23 (Thomas).Engineers call the flood pool expected from the Spillway Design Storm the “Spillway Design Flood,” often shortened to “SDF.”At Addicks and Barker Reservoirs, engineers currently base the SDF on the “Probable Maximum Flood,” the flooding expected to occur during the “Probable Maximum Precipitation” (“PMP”), the worst rainfall that engineers believe could be generated in the region.

• The most significant and, at times, prohibitive cost of an accurate hazard classification or Spillway Design Storm study for a small dam is incurred during the development of the hydraulic model of the downstream waterway.

• Since the majority of dams subject to local or state dam safety regulations have drainage areas less than 10 square miles, questions arise over the most appropriate temporal rainfall distribution to utilize in a hazard classification and/or Spillway Design Storm analysis.

• This kind of map work is valuable because of the impact of space on the social relations of young people.

• The Spillway Design Storm incorporated an updated probable maximum rain event, known as the Probable Maximum Precipitation.

• Crucially, the amount of land the Government acquired for each of the two reservoirs represented far less than the total expanse of property certain to be inundated within the Maximum Design Pool for each reservoir associated with the Spillway Design Storm of over 40 inches of rain in 72 hours.

• The minimum design storm used to calculate required spillway capacity must be determined according to the following table: Hazard Spillway Design Storm (SDS) Class I PMP Class II One-half PMPClass III 24 hour 100 year frequency, Type III storm* Class IV 24 hour 100 year frequency, Type III storm plus 50%* *Any later technology adopted by the U.S. Department of Agriculture, Natural Resources Conservation Service may be substituted for the use of the Type III storm.

• Rather than acquire the entire property to be flooded within the Maximum Design Pool, the Government obtained title to land inside Addicks and Barker Reservoirs sufficient to hold about only half the amount of rain associated with the Spillway Design Storm.

• Given storms having occurred after the construction of the Reservoirs/Dams that exceeded the original design rainfall amount (such as Tropical Storm Claudette which in 1979 dumped 43 inches of rain over just 24 hours in Alvin, Texas), the Government decided to update its design storm rainfall and account for the Spillway Design Storm in its Dams/Reservoirs’ redesign.