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  2. Multilevel groundwater monitoring systems - Wikipedia

    en.wikipedia.org/wiki/Multilevel_groundwater...

    The system can be used to monitor a few zones in boreholes as small as 2-inches, to boreholes up to 20 inches in diameter where numerous depth intervals can be monitored (most installations are in the 4- to 10-inch diameter borehole range) with maximum depth to date of 1,400 feet. Depth-to-water measurements can be made inside the sampling ...

  3. List of dams and reservoirs in Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/List_of_dams_and...

    Following is a list of dams and reservoirs in Pennsylvania. All major dams are linked below. The National Inventory of Dams defines any "major dam" as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3 ), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3 ).

  4. Depth in a well - Wikipedia

    en.wikipedia.org/wiki/Depth_in_a_well

    Well depth values from the wireline loggers operation are referred to as "logger's depth". The loggers depth are typically considered more reliable than the drillers depth. The differences between loggers and drillers depths are due to different stretch in the drilling string when drilling, and the wire line entered into the bore hole during ...

  5. Pennsylvania to partner with natural gas driller on in-depth ...

    www.aol.com/news/pennsylvania-partner-natural...

    The state of Pennsylvania will work with a major natural gas producer to collect in-depth data on air emissions and water quality at well sites, enhance public disclosure of drilling chemicals and ...

  6. Hydraulic head - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_head

    In an aquifer, it can be calculated from the depth to water in a piezometric well (a specialized water well), and given information of the piezometer's elevation and screen depth. Hydraulic head can similarly be measured in a column of water using a standpipe piezometer by measuring the height of the water surface in the tube relative to a ...

  7. Nautical chart - Wikipedia

    en.wikipedia.org/wiki/Nautical_chart

    Depths on charts published in most parts of the world use metres. Older charts, as well as those published by the United States government, may use feet or fathoms. Depth contour lines show the shape of underwater relief. Coloured areas of the sea emphasise shallow water and dangerous underwater obstructions.

  8. Foster Joseph Sayers Reservoir - Wikipedia

    en.wikipedia.org/wiki/Foster_Joseph_Sayers_Reservoir

    1 Shore length is not a well-defined measure. Foster Joseph Sayers Reservoir is a reservoir located near the borough of Howard , Pennsylvania . [ 1 ] The lake is formed due to the damming of Bald Eagle Creek , a tributary of the West Branch Susquehanna River , as well as other smaller creeks. [ 2 ]

  9. Acoustic Doppler current profiler - Wikipedia

    en.wikipedia.org/wiki/Acoustic_Doppler_Current...

    The result is the net current profile. Bottom track provides the foundation for surveys of the water currents in coastal areas. In deep water where the acoustic signals cannot reach the bottom, the ship velocity is estimated from a more complex combination of velocity and heading information from GPS, gyro, etc.

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