USGS PWRC web-site link USGS web-site link
New Features

Survey Results Note..some of these links are also available on the primary web site!

Species Groups: Distribution and Change Maps
Summary information on population change by region and time period

Interactive Species Trend and Indices Program
This program allows you to display trends for 3 time intervals, by species. Indices are provided as links from the species names

Interactive Regional Trend and Indices Program
This program allows you to display trends for 3 time intervals, by region. Indices are provided as links from the region names

Interactive Regional Trend and Indices Program
This program allows you to display trends for 1966-1999 time intervals, by region, with comparisons to analyses of 1966 - 1999 results excluding new routes and to 1966 - 1998 analyses.

Two-year Trend Result Program
This program allows you to display trends for 1966-1999 time intervals, by region, along with analysis of change for the 1997-1998 and 1998-1999 periods.