本文介绍了一种监测费城郊区供水公司地下水供应的方法。监测在高度复杂的水文地质环境中完成，以预测气候影响，并区分气候变化和其他原因对油井作业的影响。气候监测包括跟踪十年逐月平均降水量的累积偏差。根据该信息，充电最有效的时间段（非生长季节）与充电最无效的时间段（生长季节）分开。对油井的监测包括跟踪特定容量，将水位与泵送速率结合起来。 通过比较特定容量的趋势与补给的趋势，可以明显看出一般相关性，并可以预测可用供应量。调查比容量的任何异常趋势。已发现的原因包括单井监测设备故障和采石场排水的区域影响。

This paper describes a method of monitoring the groundwater supply of the Philadelphia Suburban Water Company. The monitoring is accomplished within a highly complex hydrogeologic environment to predict climatic impacts and discerning between the effects of climate change and other causes on the operation of wells. Climatic monitoring consists of tracking the cumulative departure from the ten year progressive monthly average of precipitation. From this information, the time periods when recharge is most effective (non-growing seasons) are separated from the periods when recharge is least effective (growing seasons). Monitoring of the wells consists of tracking specific capacities, which combines the water level with the pumping rate. By comparing trends in specific capacities with trends in recharge, general correlations are apparent and predictions of available supply can be made. Any abnormal trends in specific capacity are investigated. Causes have been found to range from faulty monitoring devices in individual wells to regional impacts of quarry dewatering.