Drainage Recharge Piezometer NTR3-3A | |
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County: | Fillmore |
Township: | Bloomfield (T102N R13W) |
Location: | In agricultural field, east of Mower/Fillmore County-line Road |
Land-surface elevation: | 1339.39 feet, NAVD88 |
Installation: | 26 April 2016, by the U.S. Geological Survey |
Piezometer information | |
This is a till-screened piezometer located in a tile-drained agricultural field. This piezometer is part of a 6-piezometer transect/nest referred to as "NTR3". This piezometer is screened in a glacial till layer, which overlies limestone bedrock. | |
Depth: | 8.33 feet |
Open interval: | 3.17–7.64 feet |
Current use: | Monitoring, USGS Southeast Minnesota Subsurface Drainage Impacts on Groundwater Recharge |
Aquifer information | |
Type: | Screened in glacial till layer; no contributing aquifer |
This site is operated in cooperation with the Environment and Natural Resources Trust Fund and the U.S. Geological Survey.
Water levels below land surface during 16 March 2017 to the present are estimated to be accurate to 0.2 feet based on the noisiness and instrument-drift corrections associated with the non-vented water level record. 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 to ± 0.05 feet based on a differential GPS survey. Water-level differences are accurate to within 0.01 feet based on the transducer manufacture specifications.
Water temperatures are accurate to ± 0.1°C, and differences in temperature are accurate to ± 0.1°C.
Specific conductances are accurate to ± 1 us/cm, and differences in specific conductances are accurate to ± 1 us/cm.