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Daily data pages will be decommissioned in early 2026.
Daily data are now available in WDFN.| Upper Sioux Observation Well US-O2 | |
|---|---|
| County: | Yellow Medicine |
| Township: | Minnesota Falls (T115N R39W) |
| Location: | On farmsted 1 miles east of MN Hwy. 274 |
| Land-surface elevation: | 1038.404 +/- 0.036 feet, NAVD88 |
| Installation: | Oct. 2, 2006, for the USGS |
| Well information | |
| Depth: | 100 feet |
| Open interval: | 85–100 feet |
| Original and current use: | Monitoring, USGS Hydrologic study |
| Aquifer information | |
| Type: | possibly Hydrologically unconfined buried sands |
| Thickness: | 16 feet (90–106 feet, BLS) |
| Deposit: | Buried, glacially deposited sand |
This site was operated (2007-2020) in cooperation with the Upper
Sioux Community
Water temperature is accurate to plus-or-minus 1°C, but differences in temperature is accurate to 0.1°C.
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 to ± 0.01 feet based on a differential GPS survey. Water-level differences are accurate to within 0.01 feet.
Water temperature is accurate to plus-or-minus 0.1°C, and differences in temperature are accurate to 0.1°C.
U.S. Department of the Interior |
U.S. Geological Survey
Title: USGS Surface-Water Daily Data for the Nation
URL:
Page Contact Information: Minnesota Water Data Support Team
Page Last Modified: 2025-12-08 20:46:36 EST
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