Flood Control District Zones

Alameda County Flood Control District with zone boundaries. Boundaries represent voting districts (i.e., district designation for each address) and therefore may align with parcel boundaries in cases where parcels (and sometimes residences) are divided by the true city/district boundary.阿拉米达县防洪区（Alameda County Flood Control District）及其区域边界数据集。此处的边界代表选举分区，即各地址对应的选区标识，因此当地块（有时亦包含住宅）被实际城市/分区边界分割时，该类边界或与地块边界相契合。