How levees fail, how we fix them

Sacramento District
Sacramento District
93.8 هزار بار بازدید - 13 سال پیش - Levees are an extremely important
Levees are an extremely important part of California's flood risk reduction system, and most are in desperate need of maintenance and repair. Learn about the primary ways levees fail and how we fix them.
13 سال پیش در تاریخ 1390/09/28 منتشر شده است.
93,823 بـار بازدید شده
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