pew creek_below_johnson_road_lawrenceville_gwinnett_co_ga_lester_williams_4, I_AMC3435
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© Copyright Alan Cressler 2011

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The metal structure is a "V" weir. We had to build a sediment dam on either side of it to force as much water as we could through the weir. Lester used a calibrated container, the blue plastic barrel, and filled it below the weir as I timed the filling. We were able to calculate gallons per minute flow in the stream.

title pew creek below johnson road lawrenceville gwinnett co ga lester williams 4
date yyyymmdd hr:mn 2007:10:17 10:41:07
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flickr_agent alan_cressler

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