Large reservoir has obviously vertical stratification in water quality,and locations of water supply intakes and releases are important determinants of water quality for outflows. Based on a one-dimension vertical water quality model,the Matlab was used to program the model and the one-dimension selective water intaking construction outflow quality prediction software was developed. In a practical example of selective water intaking tower in a reservoir in Northwest China using vertical water quality data in this reservoir, this software simulated 13 outflow water quality indexes including temperature, density, dissolved oxygen, electricity conductivity and oxidation-reduction potential. The results showed that the outflow temperature, dissolved oxygen,electricity conductivity,pH, hardness and total nitrogen all matched the measured data with comparative mistake less than 10%; however a large difference exited in the index of ammonia nitrogen. This software could provide references for large reservoir in outflow water quality optimization and schedule and water treatment plant operation control.%深水型水库作为城市重要供水水源,纵向上通常呈现明显的水质分层,不同水位出流水质不同.在优选纵向一维水质模型基础上,运用Matlab平台将模型程序化,开发了应用于选择性取水构筑物的出流水质预测软件；在西北某水库选择性取水塔的取水实例中,利用水库纵向水质数据,对温度、密度、溶解氧、电导率、氧化还原电位等13项出流水质指标进行了模拟验证,研究结果表明软件预测的出流水体的温度、溶解氧、电导率、pH、硬度、总氮指标与实测数据吻合,相对误差在10％以下,氨氮等指标预测误差较大.该软件可为深水型水源水库出流水质优化调度及水厂的运行控制提供参考.
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