The water-flow in fracture is not directly proportional to the waterhead.

裂缝水流量与水位不呈正比关系。

The collocation of forest types is one main research item of constructing waterhead oriented conservation forest in Miyun reservoir.

水源保护林林种的合理配置是密云水库水源保护林建设中的重要研究内容之一。

Tumen waterhead site is the main water supply source of drinking water for urban citizens and water use for industry and agriculture.

土门水源地位于临汾市西部边山土门一带，是临汾市城市居民生活饮用水和工农业用水的主要供水水源，其附近建有两座焦化厂。

The paper also estimate the environmental influences of the waterhead area, and provides water protection countermeasures for the area.

对李子园水源地可能产生的环境影响进行了分析，初步提出了水源地保护措施。

So it is a important task of waterhead management that understanding the foundation of water pollution and preventing water from being polluted.

了解水污染源，防止水污染产生和进一步恶化是水源管理中的一项重要任务。