Site MY1: Maria Ygnacio Creek
at Patterson Avenue.

Just follow the directions for AT2. MY1 is the stream on the parking area side of the center bridge pier. The Maria Ygnacio branch of Atascadero consists of Maria Ygnacio and San Antonio creeks. These creeks go all the way to the crest of the mountains and contribute most of the flow to the Atascadero system during storms. MY1 represents a "high quality" urban stream: it carries mountain water through suburban housing and parks, has a more natural channel than the other branch, and a more substantial buffer area protects the creek from adjacent uses. During storms both AT2 and MY1 have to be sampled from the bridge because of dangerous high flows - we just lower a bucket, first on one side of the pier and then on the other. As an added bonus at this site there is a USGS gauging station at the center pier that records the combined flow from both creeks. We access that flow data through the internet.


Go next door to Site AT2
Go downstream to Site AT1


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