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 ~30 meters and S of 0.2. Based on this, K values are roughly 82 ± 71% m/day. Multiply the gradient by this K for approximate seepage velocity (m3/m2/day) and by 400 for average advective transport velocity (m/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=0.21 m3/m2/day, v=1.03 m/day)
Deep flow azimuth 34°N with a gradient of 0.00080 (q=0.13 m3/m2/day, v=0.65 m/day)
In instrument enclosure on pylon (sealed)
Air temperature: 28.4°C
Relative humidity: 36%
Storage battery: 13.8 Volts
Conditions in wells
Elevation of piezometric surface
P1b shallow: 148.11 m AMSL
P1a deep: 148.13 m AMSL
P2b shallow: 148.09 m AMSL
P2a deep: 148.12 m AMSL
P3b shallow: 147.98 m AMSL
P3a deep: 148.05 m AMSL
Water temperature
P1b shallow: 15.3°C
P1a deep: 15.2°C
P2b shallow: 15.8°C
P2a deep: 16.2°C
P3b shallow: 13.1°C
P3a deep: 13.1°C
Specific conductance
P1b shallow: 614µS
P1a deep: 659µS
P2b shallow: 711µS
P2a deep: 720µS
P3b shallow: 793µS
P3a deep: 441µS