Stream Water Quality Monitoring

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Using Doodle Polling we determine a day and time at least four us an can volunteer for a few hours four times a year, winter, April, July and Oct.  If you would like to observe, please contact Glenn.Welch@yahoo.com.

In pairs, using a net, we disturb the stream bed and collect in our net whatever floats in.  We take 20 net collections and transfer what we find to a small tub. 

Any small animal without a backbone that we find on the bottom (benthic macro invertebrate) we examine and identify it. We determine how many individuals of each type we find.  We stop when we reach 100.

There are three orders of insect larva that when present can indicate a healthy stream, these are mayflies (pictured), stoneflies and caddisflies.

We of course find crayfish, and larval forms of dragonflies, damselfies, beetles, true flies and others.  We count and tally them all.

Currently the health status of streams in lower Montgomery County is not good as they are in the fair to poor range. Our mission then continues to be to improve the overall health of our streams.