Low dam is a diversion irrigating method adopted generally in irrigated area.

低坝是灌区引水灌溉普遍采用的一种形式。

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But a low-head dam that delivered irrigation water also blocked fish movement.

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This problem was avoided in 2004, but unfortunately, on that occasion, the volume of sand available behind the dam was too low to rebuild the sandbanks.

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With the water level critically low, it is difficult to see how the turbinated flow of the dam is reaching the high levels that the state agency is claiming.

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