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• Organization: Department of the Interior
• Updated: 20211122 | Harvested: July 18, 2025 at 02:08 AM

The U.S. Geological Survey (USGS), at the request of the U.S. Army Environmental Command (USAEC), evaluated the capabilities of two borehole technologies to measure horizontal groundwater velocity...

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• Organization: Department of the Interior
• Updated: 20200827 | Harvested: July 18, 2025 at 01:17 AM

Between March 2002 and May 2011 periodic water level measurements were made in the well on the summit of Kilauea Volcano using a 2,000-foot calibrated electric tape (Waterline Envirotech Ltd.)...

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• Organization: Department of the Interior
• Updated: 20211122 | Harvested: July 18, 2025 at 12:42 AM

The effects of vertical flowmeter placement relative to the vertical fracture opening were examined using the colloidal borescope flowmeter (HB). For these measurements, the HB measurement...

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• Organization: Department of the Interior
• Updated: 20211122 | Harvested: July 18, 2025 at 12:41 AM

The colloidal borescope flowmeter (HB) used in this testing was developed by AquaVISION, Llc. The instrument employs a charge-coupled device camera, an optical magnification lens (140x), and a...

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• Organization: Department of the Interior
• Updated: 20211122 | Harvested: July 18, 2025 at 12:48 AM

The heat-pulse flowmeter (HH) used in this testing is a KVA Model 200 system. The instrument computes groundwater vectors from heat arrival and decay in an array of four thermistors that surround...

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