Poplar Cove, Nantahala National Forest, North Carolina Landslide Monitoring Site Active

Rainfall | Groundwater Pressure | Soil Water Content | Soil Temperature | Battery Voltage

Rainfall

Rainfall is measured at the monitoring site using one 8-inch-diameter tipping-bucket rain gauges that measure 0.01 inch of rainfall per tip.

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Sources/Usage: Public Domain.

Ground Water Pressure

The monitoring site has three tensiometers (S1-S3) located at various depths. The tensiometers are connected with current transducers that can measure pore-water pressures in the range of +850 kPa to -1000 kPa. The location and depth of the porous tips of each of the tensiometers are indicated on the graphs. Pore-water pressures are reported in kiloPascals (kPa). One kiloPascal is roughly equivalent to the pressure exerted by a 10-cm-deep column of water.

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Sources/Usage: Public Domain.

Soil Water Content

Each instrument array (M1-M3) at the monitoring site is equipped with three capacitance-based instruments to measure the volumetric water content of the soil. The location and depth of the instruments are indicated on the graphs.

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Sources/Usage: Public Domain.

Soil Temperature

Each tensiometer has a built-in temperature sensor. Soil temperature measurements are used to correct measurements by the other instruments and to provide an indication of when the ground is frozen.

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Sources/Usage: Public Domain.

Battery Voltage

Battery voltage is monitored for identifying any problems with battery charging due to solar panel or battery failures.

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Sources/Usage: Public Domain.