This geodatabase contains 90 meter buffers of streams within the National Hydrography Dataset Plus Version 1 (NHDPlusV1). These buffers were developed by converting NHDPlusV1 flowlines to a 30m grid, then running a euclidean allocation function in ArcPy to generate buffer zones. For flowlines representing artificial paths within NHD area river polygons, buffers extend from the outside edges ("banks") of the polygon outward. To account for other hydrologic features when developing buffers (e.g. lakes), all features were buffered in the NHDPlusV1 to help stream/river buffers from extending into these other features such as lakes. The source code for buffer development can be found at https://github.com/ArthurCooper/NFHP-Buffer-Code.