Long Island Streams IfSAR view

<p>This layer is a subset of ifsar derived streamlines for Long Island, Alaska. These data have Netmap derived synthetic attributes attributed to 100m reaches, and with symbology showing gradient classified into greater than or less than 12% grade. This grade break is to be a simgle attribute break for possible upper limit of occupancy of anadromous fish. This gradient break serves as rough estimate and is not to be taken as an absolute.&nbsp;</p>

本图层为阿拉斯加长岛地区IFSAR（IFSAR）衍生流线的子集。该数据集包含由Netmap（Netmap）衍生的适配100米河段的合成属性，其符号系统将坡度分为大于12%与小于12%两类。该坡度分界可作为溯河洄游鱼类（anadromous fish）栖息上限的潜在属性分界依据，仅为粗略估算结果，不可视作绝对标准。