Aerial Fire Retardant Hydrographic Avoidance Areas_ Aquatic - Region 3

Aerial retardant avoidance area for hydrographic feature data are based on high resolution National Hydrographic Dataset (NHD) produced by USGS and available from the USFS. Forests and/or regions have had the opportunity to modify the default NHD water representation (300ft buffer from all water features) for their areas of interest to accurately represent aerial fire retardant avoidance areas as described in the 2011 Record of Decision for the Nationwide Aerial Application of Fire Retardant on National Forest System Land EIS. These changes have been integrated into this dataset depicting aerial fire retardant avoidance areas for hydrographic features. Note that this data is current for 2022.

面向水文特征数据的航空阻燃剂避让区域数据集，其数据基础为美国地质调查局（United States Geological Survey, USGS）编制、可通过美国林务局（United States Forest Service, USFS）获取的高分辨率国家水文数据集（National Hydrographic Dataset, NHD）。针对各自关注的区域，各林区及相关区域可对NHD默认的水体表征形式——即所有水体要素周边300英尺的缓冲区——进行调整，以精准匹配《2011年全国国家森林系统土地航空施用阻燃剂环境影响声明决策记录》（2011 Record of Decision for the Nationwide Aerial Application of Fire Retardant on National Forest System Land EIS）中所描述的航空阻燃剂避让区域标准。上述调整已全部整合至本数据集，该数据集用于刻画水文特征对应的航空阻燃剂避让范围。请注意，本数据集的最新有效版本为2022年版。