The following PDF documents provide detailed information about the Watershed Index Online for users seeking more than the summary information on WSIO web pages alone.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- About WSIO (PDF)(13 pp, 712 K)
- WSIO User Manual (PDF)(46 pp, 2 MB)
- Frequent Questions About WSIO (PDF)(3 pp, 92 K)