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NSS, Version 6

National Streamflow Statistics program

NOTE: The current program version is 6.0, posted 08-03-2012. Please deinstall any previous version of NSS and replace it with the most recent version before using the latest NSS database.

Information

• Summary of NSS
• Version history
• Known Issues List documents important information that users should know on a State-by-State basis. Please check these before using NSS.
• How to order U.S. Geological Survey printed documentation
• The NSS Publications page lists the underlying reports from which NSS equations are drawn. Users who become familiar with these reports will make the most appropriate use of NSS estimates.

Software

• Select the following links to retrieve the two distribution files required for a complete installation of NSS. See the README file for installation instructions.

  NSSv6.0.exe (6 Mb) self-extracting executable of the NSS software

  NSS_v6_2012-11-21.mdb (16 Mb) Microsoft Access database needed to run NSS - Previous version of the database was dated: 2011-05-09

  (References to commercial vendors of software products or services is for informational purposes only and does not imply endorsement by the U.S. Government.)

  Please note! The database for NSS can change frequently to update and add new equations. Please check this web site often to determine if a new version of the database is available. The version history link will document any changes made to the data base or the software.

Region-of-Influence Data Files

• Regional-of-Influence (ROI) is a method of developing custom regression equations for estimating streamflow statistics for individual ungaged sites. The method is described in the documentation provided below. One or two additional files need to be downloaded for each state and placed in the directory in which users have installed the NSS software and database to allow NSS to run ROI regressions.

Documentation

• How to order U.S. Geological Survey printed documentation
• Fact sheet describing NSS program: Turnipseed, D.P., and Ries, K.G., III, 2006, The National Streamflow Information Program: Estimating High and Low Streamflow Statistics for Ungaged Sites: U.S. Geological Survey Fact Sheet 2007-xxxx, 4 p.
• T&M Chapter 6 of Book 4, The National Streamflow Statistics Program: A Computer Program for Estimating Streamflow Statistics for Ungaged Sites

Documentation for Individual States

Point of contact for NSS:

Todd Koenig
U.S. Geological Survey
Office of Surface Water
1400 Independence Road, MS100
Rolla, MO 65401
(electronic mail: tkoenig@usgs.gov)