NAWQA RETRO DATABASE FOR NUTRIENTS IN GROUND WTR AND SURFACE WTR

Documentation of retrospective database
Data files:
These data files are ascii files in fixed column format. The header at the top of each file describes the variables contained in the file. The data files are not intended for viewing in a browser; they are designed for you to download and manipulate on your local system. However, we have provided small extracts of each file showing the header lines and a few records that are designed for viewing in a browser.
- Surface-water data file (4.6 MB)
  - Extract of SW data file
- Ground-water data file (2.6 MB)
  - Extract of GW data file
Online publications based on retrospective database:
- Nutrients in the Nation's waters--Too much of a good thing?
- Nitrate in ground waters of the United States--Assessing the risk

U.S. Department of the Interior, U.S. Geological Survey
Maintainer: Kerie Hitt (kjhitt@usgs.gov)
Last update: 17:47:43 Mon 09 Jul 2001
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URL: http://water.usgs.gov/nawqa/nutrients/datasets/retrodata.html