Rainfall Frequency definition

Rainfall Frequency means the probability of a rainfall event of defined characteristics occurring in any given year. Information on rainfall frequency is published by the National Weather Service. For the purpose of storm drainage design, the following frequencies are applicable:
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Examples of Rainfall Frequency in a sentence

  • USDA Soil Conservation Service, "Rainfall Frequency Atlas of Alabama, Florida, Georgia, and South Carolina for Durations from 30 Minutes to 24 Hours and Return Periods from 1 to 100 Years" January 1978; Gainesville, Florida.

  • The total rainfall from a 24-hour rainfall event with a two year frequency of return, assuming a Soil Conservation Service Type II rainfall distribution, as specified in Technical Paper 40, Rainfall Frequency Atlas of the United States for Durations from 30 minutes to 24 Hours and Return Periods from one to 100 Years (NOAA, 1961).

  • The total rainfall from a 24-hour rainfall event with a 100 year frequency of return, assuming a Soil Conservation Service Type II rainfall distribution, as specified in Technical Paper 40, Rainfall Frequency Atlas of the United States for Durations from 30 minutes to 24 Hours and Return Periods from one to 100 Years (NOAA, 1961).

  • The storm events shall be as defined by U.S. Department of Commerce, Technical Paper No. 40, Rainfall Frequency Atlas of the United States, or local regulations if more stringent.

Related to Rainfall Frequency

  • Diatomaceous earth filtration means a process resulting in substantial particulate removal in which a precoat cake of diatomaceous earth filter media is deposited on a support membrane (septum), and while the water is filtered by passing through the cake on the septum, additional filter media known as body feed is continuously added to the feed water to maintain the permeability of the filter cake.

  • Yearly (1/Year) sampling frequency means the sampling shall be done in the month of September, unless specifically identified otherwise in the effluent limitations and monitoring requirements table.

  • Runoff coefficient means the fraction of total rainfall that will appear at the conveyance as runoff.

  • Common Channel Signaling (CCS) means an out-of-band, packet-switched, signaling network used to transport supervision signals, control signals, and data messages. It is a special network, fully separate from the transmission path of the public switched network. Unless otherwise agreed by the Parties, the CCS protocol used by the Parties shall be SS7.

  • Signaling System 7 (SS7) means a signaling protocol used by the CCS Network.