Zoning

From 1999 thru March 30, 2015, records show a total of 28 ZAA (Zoning Amendments, e.g. County-approved zoning changes) decisions were issued. It is not known what, if any, processes or procedures existed to update the Zoning layer when a ZAA was approved. It is likely that some, but not all, of these changes are reflected in the Zoning Layer. It is possible that none of these changes are correctly reflected in the Zoning layer. Annexations since 1999 may not be accurately reflected in this layer.It is not known if any double-checking or quality-control process has ever been done between the Official Zoning Atlases kept in the Planning Department and the Zoning layer. Experience has shown very little inconsistency between the Zoning Atlases and the Zoning layer during work in the Planning Department. It expected that the accuracy rate between the Zoning layer and Zoning Atlases is greater than 95%. This layer is accurate to the parcel level. Some parcels may be slightly shifted. Any shifting that has occurred is expected to be less than 15 feet in any direction.1999年至2015年3月30日期间，据相关记录统计共计发布28项ZAA（区划修正案（Zoning Amendments），例如经县审批的区划变更事项）决策。目前尚未明确，在ZAA获批后，是否存在对应的更新流程或操作规范以维护区划图层（Zoning Layer）。此类区划变更中仅有部分（而非全部）有可能已同步至该图层，极端情况下甚至存在所有变更均未正确映射至该图层的可能性。1999年以来的区域并入（Annexations）事项，可能未在该图层中得到准确呈现。目前无法确认，规划部门存档的官方区划图集（Official Zoning Atlases）与区划图层之间，是否曾开展过复核或质量管控流程。规划部门的实操经验表明，区划图集与区划图层之间的不一致性极低。据估算，二者间的匹配准确率可达95%以上。该图层的精度可达宗地（parcel）级别，部分宗地可能存在轻微偏移，且已知的偏移幅度在任意方向上均预计不超过15英尺。