• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Specialty Symposium on Integrated Surface and Ground Water Management, May 20-24, 2001, Orlando, Florida >An Analysis of Rainfall Distributions in Orange County, Florida
【24h】

An Analysis of Rainfall Distributions in Orange County, Florida

机译：佛罗里达奥兰治县的降雨分布分析

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Orange County Subdivision Regulations require that the peak flow resulting from a storm shall be calculated using Orange County rainfall distribution, which was derived using three severe storms in 1956 and 1960. The Federal Emergency Management Agency (FEMA) previously accepted the use of Orange County rainfall distribution in establishing the 100-year flood elevations in Orange County. Recently, FEMA requested Orange County to provide justifications for the use of the Orange County rainfall distribution. Since 1986, Orange County has been collecting rainfall data in 15-minute increments. Fourteen storms were extracted from these rainfall data with depths ranging from 4.6 to 7.6 inches and with durations ranging from 14 to 25 hours. The peak flows from these storms were calculated using the SCS method for various times of concentration and runoff curve numbers. They were compared with the peak flows calculated for the same depths and duration but using different storm distributions such as Soil Conservation Service (SCS) Type II, SCS Type II Florida Modified, Florida Department of Transportation (FDOT), and South Florida Water Management District distributions. The analysis showed that for practical values of times of concentration and curve numbers, Orange County rainfall distribution and SCS Type II Florida Modified distribution predicted peak flows closer to the peak flows generated by the actual storms. The 100-year elevations of Shingle Creek located in an 82 square mile watershed in Orange County were calculated using these distributions. The differences in these elevations are within the computational accuracy proving that Orange County rainfall distribution can be used in determining the 100-year elevations.
机译：《奥兰治县分区条例》要求使用风暴县产生的峰值流量应使用奥兰治县的降雨分布来计算，该分布是根据1956年和1960年的三场强风暴而得出的。建立奥兰治县100年洪水高程的降雨分布。最近，FEMA要求奥兰治县提供使用奥兰治县降雨分布的理由。自1986年以来，奥兰治县一直以15分钟为增量收集降雨数据。从这些降雨数据中提取出十四次风暴，其深度范围为4.6到7.6英寸，持续时间为14到25小时。使用SCS方法针对不同时间的浓度和径流曲线数计算了这些风暴的峰值流量。将它们与针对相同深度和持续时间但使用不同暴风雨分布而计算出的峰值流量进行了比较，例如使用II型土壤保持服务（SCS），佛罗里达州改良的SCS II型，佛罗里达州交通运输部（FDOT）和南佛罗里达州水管理区分布。分析表明，对于浓度和曲线次数的实用值，奥兰治县降雨分布和SCS II型佛罗里达修正分布预测的峰值流量更接近实际风暴产生的峰值流量。使用这些分布计算得出了位于橙县82平方英里分水岭的Shingle Creek的100年海拔。这些海拔的差异在计算精度之内，证明了奥兰治县的降雨分布可用于确定100年的海拔。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号