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Prairie Island Observation Well PI98-08 | |
---|---|
County: | Goodhue |
Township: | Welch (T114N R16W) |
Location: | 0.05 miles northeast of Prairie Island Boulevard, 3.5 miles southeast if the intersection of Co. Rd. 68 and Co. Rd. 54 |
Land-surface elevation: | 731.52 feet, NAVD88 |
Installation: | September 9, 1998, By the USGS |
Well information | |
Depth: | 67.8 feet |
Open interval: | 62.8–67.8 feet |
Original and current use: | monitoring, USGS |
Aquifer information | |
Type: | surficial sand and gravel |
Thickness: | more than 69.5 feet (0–>69.5 feet, BLS) |
Deposit: | sand and gravel alluvium deposited by a glacial melt-water stream |
This site is operated in cooperation with the Prairie Island Indian
Community
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 plus-or-minus 0.01 foot based on
optical level survey.
Water temperature is accurate to plus-or-minus 3°C, but differences in temperature is accurate to 0.1°C.