Hydrology - Stream Centerlines - Ipswich Watershed - Idrisi Raster File.

This datalayer is part of a group of layers used for research in the Ipswich River Watershed. This datalayer was rasterized from the vector line data set “ip30_hydrology”, a modified version of the hydrology layer available from MassGIS for the Ipswich Watershed. To be used to generate a hydrologically corrected Digital Elevation Model, and to examine sampling site catchments or sub-watersheds within the Ipswich River Watershed.本数据图层为伊普斯威奇河流域（Ipswich River Watershed）研究用图层组的组成部分之一。该数据图层由矢量线数据集「ip30_hydrology」栅格化生成，此数据集是马萨诸塞州地理信息系统（MassGIS）针对伊普斯威奇流域发布的水文图层的修改版本。其可用于生成水文校正数字高程模型，以及分析伊普斯威奇河流域内的采样点集水区或子流域。