The characteristics of an ungated overflow spillway are investigated. Some important design aspect and hydraulic computation methods for the spillway entrance zone are discussed.

本文分析了无闸控制溢洪道的特点，讨论了溢洪道进口段水力设计中的几个主要问题和水力计算方法。

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An ungated version of the paper Yglesias refers to is here.

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For instance, in 2005, the Orlando Sentinel looked at sheriff's reports over a four-year period on 1.400 Florida homes in both gated and ungated communities that were similar in price and location.

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