FRACTIONAL IMPERVIOUS SURFACE 2010 NBEP2026 (raster)

Seamless raster of fractional impervious surface for the Narragansett Bay, Little Narragansett Bay, and Southwest Coastal ponds watersheds with a 30-meter resolution. This dataset was created for the 2026 Status and Trends report (nbep.org) and is intended for general planning, graphic display, and GIS analysis at the watershed and subwatershed scale.本数据集为纳拉甘西特湾（Narragansett Bay）、小纳拉甘西特湾（Little Narragansett Bay）及西南沿海池塘流域构建了空间分辨率为30米的无缝百分比不透水面栅格（seamless raster of fractional impervious surface）。本数据集专为2026年现状与趋势报告（Status and Trends report，nbep.org）编制，适用于流域及子流域尺度下的通用规划、图形展示与地理信息系统（GIS）分析。