| Confining Beds Piezometer CWO2-A |
| County: |
Carlton |
| Township: |
Red Clover (T49N R20W) |
| Location: |
In mowed/fenced area, west of Villa Court Senior Living
building |
| Land-surface elevation: |
1332.28 feet, NAVD88 |
| Installation: |
9 July 2015, by the USGS |
| |
|
| Well
information |
| This piezometer is the shallowest
till-screened piezometer of a 5-well nest referred to as
"CWO2" (also referred to as "Cromwell Near
Nest"). This piezometer is screened in a glacial till layer,
which is the confining unit above where nearby city wells pump from
a confined aquifer. |
| Depth: |
35.17 feet |
| Open interval: |
32.30–34.96 feet |
| Original & current use: |
monitoring, USGS Confining Beds Hydrology study |
| |
|
| Aquifer
information |
| Type: |
screened in glacial till layer; no contributing aquifer |
This site was operated (2015-2017) in cooperation with the
Environment and Natural Resources Trust Fund, Iowa State University,
Minnesota Geological Survey, and the U.S. Geological Survey.
Water levels below land surface are accurate to 0.01 feet. Water
levels above National American Vertical Datum of 1988 (sea level) are
calculated by subtracting recorded water levels from the land surface
elevation, which is accurate only to ± 0.1 feet based on a differential
GPS survey and an optical level survey. Water-level differences are
accurate to within 0.01 feet.
Water temperatures are accurate to ± 0.1°C.
Precipitation is accurate to 0.01 inches except during freezing
periods (about Dec. through early Apr.). The rain gage is unheated and
uncovered. The precipitation data during freezing periods result from
melting of snow (accumulated in the rain gage) during warm periods and
do NOT represent actual precipitation. Precipitation totals during
freezing periods May underestimate actual totals because the rain gage
funnel may be full of snow (preventing further accumulation) or because
snow in the funnel may sublimate instead of melt.
This page is undergoing modernization with expected decommissioning as key features
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