地表水灌溉，是指以地表水体（河川、湖泊及汇流过程中拦蓄起来的地表径流）为水源的农田供水方式。利用地表水灌溉，需要修建引水、蓄水或提水等不同取水方式的灌溉系统。
大同市以往的农田灌溉，多以地表水灌溉为主。
The farmland irrigation of Datong city in the past was mainly depend on surface water irrigation.
研究结果表明：黄土台塬区地下水动态的影响因素由大到小排序为：蒸发、降水、地表水灌溉、地下水开采；
The results show that: the order of factors of groundwater level in the loess tableland area was: evaporation, precipitation, surface water irrigation, groundwater exploitation;
违规取用地表水灌溉，在水资源有限的情况下，从一定程度上损害了公共利益，并对他人不能进行补偿，因而是一种外部不经济的行为。
To some extend, the commonality benefit is harmed if infringing the surface-water irrigation rights without compensation for limited water resources, so this is external diseconomy action.
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