Nationwide volunteer program started by the
Izaak Walton League of America in 1969.
Stream health assessment based on its insect
life (biological sampling).
Stream adoption (monitoring on a regular basis,
may involve picking up trash, caring for your
stream).

Save Our Streams / Who we are / What is SOS? / Why do SOS? / Questions /
Pollution Sensitive Organisms / Somewhat Pollution Tolerant Organisms /
Pollution Tolerant Organisms / Stream Monitoring / Va. Museum of Natural History