在加利福尼亚州的阿祖萨对水库水质进行了广泛的抽样研究。重点放在更好地了解水力混合动力学和水库中的游离氯残留浓度分布。水库接近完全混合的状态，但有两个例外:入口和出口之间一定程度的短路（这显著影响T10时间），以及水库中心存在滞流区，其中混合较少，因此水较老。这些结果支持了储层分层或划分的假设。建议定期进行现场采样，以便有效管理配水系统水质。特别是，储层的内部采样可以提供有用的信息，而这些信息是无法通过其他方式推断出来的。包括7个参考文献、图表。

An extensive sampling study of reservoir water quality was conducted in Azusa, California. Primary emphasis was placed on providing a better understanding of the dynamics of hydraulic mixing and free chlorine residual concentration distribution in the reservoir. The reservoir approached completely mixed behavior with two exceptions: a degree of short-circuiting between the inlet and outlet (which significantly affected the T10 time) and the presence of a stagnant zone in the center core of the reservoir where there was less mixing and thus older water. These results support the assumption of stratification or partitioning in reservoirs. Regular field sampling is recommended to facilitate the effective management of distribution system water quality. In particular, interior sampling of reservoirs can provide useful information that could not be otherwise inferred. Includes 7 references, figures.