U.S. DEPARTMENT OF THE INTERIORBUREAU OF LAND MANAGEMENT
Fairbanks District Office
 
Eastern Interior Field Office
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Photo 2

Two researchers takes samples in West Twin Creek

USGS technician Seth Spawn (top) and hydrologist John Crawford (bottom) collect weekly water
samples on West Twin Creek. The equipment on the streambed in the foreground recorded
continuous sensor readings (every hour for four months) for dissolved organic carbon and 
carbon dioxide.

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Last updated: 07-20-2012