CV Theis Groundwater Observatory
October 8, 2019 at 11:00AM EST
The observatory lies within Spieker's (1968) geohydrologic environment I-A-2 for which he reports T values of 1 – 3 x 105 US gals/day/foot at a thickness of ~100 feet and S of 0.2. Based on this, K values are roughly 270 ± 71% feet/day. Multiply the gradient by this K for approximate seepage velocity (ft3/ft2/day) and by 1,300 for average advective transport velocity (ft/day) (i.e., average pore velocity). An aquifer test will be conducted before summer 2019.
Shallow flow azimuth 125°N with a gradient of 0.00129 (q=0.70 ft3/ft2/day, v=3.4 ft/day)
Deep flow azimuth 34°N with a gradient of 0.00080 (q=0.44 ft3/ft2/day, v=2.1 ft/day)
In instrument enclosure on pylon (sealed)
Air temperature: 83.2°F
Relative humidity: 36%
Storage battery: 13.8 Volts
Conditions in wells
Elevation of piezometric surface
P1b shallow: 485.94 feet AMSL
P1a deep: 485.99 feet AMSL
P2b shallow: 485.87 feet AMSL
P2a deep: 485.96 feet AMSL
P3b shallow: 485.50 feet AMSL
P3a deep: 485.72 feet AMSL
Water temperature
P1b shallow: 59.5°F
P1a deep: 59.4°F
P2b shallow: 60.5°F
P2a deep: 61.2°F
P3b shallow: 55.5°F
P3a deep: 55.6°F
Specific conductance
P1b shallow: 614µS
P1a deep: 659µS
P2b shallow: 711µS
P2a deep: 720µS
P3b shallow: 793µS
P3a deep: 441µS