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

  • Magnitude of such events are as defined by the "National Weather Service Technical Paper No. 40, Rainfall Frequency Atlas of the United States," May 1961, and subsequent amendments or equivalent regional or rainfall probability information developed therefrom.

  • The term "10-year, 24-hour precipitation event" means the maximum 24-hour precipitation event with a probable recurrence interval of once in ten years as defined by the National Weather Service and Technical Paper No. 40, "Rainfall Frequency Atlas of the U.S.," May 1961, or equivalent regional or rainfall probability information developed therefrom.

  • Downstream of the reservoirs, the Corps of Engineers made the decision to release a combined 16,000 cfs, this is the highest release rate since the outlets were fully gated in 1963 causing flooding.Map 1: Four Day Peak Rainfall Frequency, Harris County In the three weeks after the storm several Federal relief agencies began to offer assistance.

  • Rainfall Frequency These values are to be used to compute storm sewer size.

  • Technical Paper No. 40 Rainfall Frequency Atlas of the United States, May 1961.

  • The Arizona BLM will submit all documentation related to Undertakings under this Agreement to Consulting Parties for review and comment.

  • The rainfall depths for the 24-Hour storm can be found in the Midwestern Regional Climate Center Bulletin 71 - Rainfall Frequency Atlas of the Midwest and are included in Table 2.7 below.

  • In the recent past we have used tables compiled by Huff, F.A. and Angel, J.R. See: Rainfall Frequency Atlas of the Midwest, 1992, Bulletin 71 Midwestern Climate Center and Illinois State Water Survey.

  • Technical Paper No. 40, Rainfall Frequency Atlas of the United States for Durations from 30 Minutes to 24 Hours and Return Periods from 1 to 100 Years.

  • Storm sewer design within the City of Chanhassen has been largely based upon the precipitation frequency estimates published in the Weather Bureau’s Technical Paper Number 40 (“TP 40”), Rainfall Frequency Atlas of the United States for Durations from 30 Minutes to 24 Hours and Return Periods from 1 to 100 years (Hershfield 1961).

Related to Rainfall Frequency

  • 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.

  • Diatomaceous earth filtration means a process resulting in substantial particulate removal in which (1) a precoat cake of diatomaceous earth filter media is deposited on a support membrane (septum), and (2) 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.

  • Quarterly (1/Quarter) sampling frequency means the sampling shall be done in the months of March, June, August, and December, unless specifically identified otherwise in the Effluent Limitations and Monitoring Requirements table.

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

  • 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.

  • Generator Maintenance Outage means the scheduled removal from service, in whole or in part, of a generating unit in order to perform necessary repairs on specific components of the facility, if removal of the facility meets the guidelines specified in the PJM Manuals.

  • Working voltage means the highest value of an electrical circuit voltage root-mean-square (rms), specified by the manufacturer, which may occur between any conductive parts in open circuit conditions or under normal operating conditions. If the electrical circuit is divided by galvanic isolation, the working voltage is defined for each divided circuit, respectively.

  • COVID-19 symptoms means fever of 100.4 degrees Fahrenheit or higher, chills, cough, shortness of breath or difficulty breathing, fatigue, muscle or body aches, headache, new loss of taste or smell, sore throat, congestion or runny nose, nausea or vomiting, or diarrhea, unless a licensed health care professional determines the person’s symptoms were caused by a known condition other than COVID-19.

  • Semi-annual (2/Year) sampling frequency means the sampling shall be done during the months of June and December, unless specifically identified otherwise.

  • Generator Planned Outage means the scheduled removal from service, in whole or in part, of a generating unit for inspection, maintenance or repair with the approval of the Office of the Interconnection in accordance with the PJM Manuals.

  • low voltage means the set of nominal voltage levels that are used for the distribution of electricity and whose upper limit is generally accepted to be an a.c. voltage of 1000V ( or a d.c. voltage of 1500 V). [SANS 1019]

  • Flocculation means a process to enhance agglomeration or collection of smaller floc particles into larger, more easily settleable particles through gentle stirring by hydraulic or mechanical means.

  • Downtime means the Total Minutes in the Month during which the Cloud Service (or Servers for Server Provisioning) does not respond to a request from SAP’s Point of Demarcation for the data center providing the Cloud Service (or Server for Server Provisioning), excluding Excluded Downtime.

  • Frequency means the number of items occurring in each category. Frequency may be determined by analytical method or laboratory specific requirements for accuracy, precision of the analysis, or statistical calculation.

  • Rack means a mechanism for delivering motor vehicle fuel or diesel from a refinery or terminal into a truck, trailer, railroad car, or other means of non-bulk transfer.

  • Exfiltration means any unauthorized release of data from within an information system. This includes copying the data through covert network channels or the copying of data to unauthorized media.

  • PNode has the meaning set forth in the CAISO Tariff.

  • Semi-annual (2/Year) sampling frequency means the sampling shall be done during the months of June and December, unless specifically identified otherwise.

  • Connectivity means the provision of a Permanent Separated Bicycle Lane system that reflects desired routes between all major origins and destinations in the city.

  • Co-generation means the sequential production of electricity

  • Beam monitoring system means a system designed and installed in the radiation head to detect and measure the radiation present in the useful beam.

  • Outages means the planned unavailability of transmission and/or generation facilities dispatched by PJM or the NYISO, as described in Section 35.9 of this Agreement.