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3DHP Figure 1: NHDPlus High Resolution catchments and stream network

By National Hydrography
The National Hydrography Datasets depict the Nation’s surface waters of streams, lakes, and watersheds.
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Detailed Description

Map displaying the National Hydrography Dataset Plus High Resolution for a watershed area, including blue stream lines and multicolored catchment areas for each stream segment.

Sources/Usage

Public Domain.