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Caption: Staff of the Trinity County Resource Conservation District and the Natural Resources Conservation Service collected water quality samples at several stations in the Hayfork Creek Basin in 1994. Conductivity in Hayfork Creek in September 1994 at Deep Gulch and at Mercell Bridge both had values that exceeded the 400 umhos North Coast Regional Water Quality Control Board objective (see Info Links for more discussion). The high conductivity readings in September 1994 came at a time of very low flow as 1994 was a very dry year. Data from the Natural Resources Conservation Service, Weaverville, CA. See Info Links for more information.
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