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Abstract
The rate at which new information about stream resources is being created has accelerated with the recent development of spatial stream-network models (SSNMs), the growing availability of stream databases, and ongoing advances in geospatial science and computational efficiency. To further enhance information development, the National Stream Internet (NSI) project was developed as a means of providing a consistent, flexible analytical infrastructure that can be applied with many types of stream data anywhere in the country. A key part of that infrastructure is the NSI network, a digital GIS layer which has a specific topological structure that was designed to work effectively with SSNMs. The NSI network was derived from the National Hydrography Dataset Plus, Version 2 (NHDPlusV2) by editing spatial features in the dataset that ensure compatibility with SSNMs. This document describes those procedures and additional steps that are required to prepare datasets for use with SSNMs.
Citation
Nagel, David; Peterson, Erin; Isaak, Daniel; Dumelle, Michael; Ver Hoef, Jay; Horan, Dona. 2024. National Stream Internet Protocol and User Guide. Boise, ID: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Water and Watersheds Program. 29 p.
