ⓘ NOTICE:
The Spatial Data Repository (SDR) will be discontinued on September 7, 2026. Going forward, SDR records will be available in NYU's UltraViolet repository or on partner GeoBlacklight systems. Previously available permanent links bookmarked for assets here will also redirect you to the current location of a record. If you cannot find a previously available record, please reach out to Data Services at data.services@nyu.edu.
This shapefile contains polygons representing the stream basins of the Allegheny River watershed in western New York. Basins were developed for stream segments at the 1:24,000 scale from 7.5 minute topographic quadrangles. For the purposes of this study, a stream segment is defined as the portion of stream from tributary confluence to tributary confluence. To define the drainage basin for each stream segment.