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Hydrology

Field Lysimeter Test Facility (FLTF)

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Schematic drawing showing integration of the 3-m-deep drainage lysimeters into the structure of the facility. The view is to the east.

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View of the facility looking southwest toward Rattlesnake Mountain in May 2003.

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View of the FLTF interior showing the white cellulose insulation used to damp thermal changes, the ports for collecting drainage water from the lysimeters, and the wiring for thermocouples to monitor temperature conditions in the lysimeters.

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Side view of the 3-m-deep clear-tube lysimeter C06. The upper 1.5-m is the silt loam layer that stores and releases precipitation; this layer represents the uppermost layer of the Hanford Barrier design. Between the depths of 1.5 and 2. 0 m are a series of progressively coarser materials, starting with sand and grading into coarse gravel. The final and deepest layer, located between 2.0 and 3.0 m, is large basalt riprap.

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