New England Water Science Center
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Site Information
Site: 411555070021901 MA-NBW 228 NANTUCKET, MA
Location: Nantucket County, Massachusetts
Hydrologic Unit: 01090002
Aquifer: Outwash
Site Type: continuous, Climate Response Network: yes
Land surface datum: 38.83 feet above NGVD29
Depth of well: 35.6 feet
Period of record: 1976-03-04 to 2024-05-13
Lowest approved groundwater level: 27.9 feet on 1981-02-23
Highest approved groundwater level: 20.51 feet on 1997-07-28
View Data on Monitoring Location Page
View Data on Legacy NWISweb Page
Groundwater Levels
Graph of groundwater levels during the past year and monthly period of record statistics.
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Statistics for the current month and monthly statistics for the period of record [Most recent month with data is highlighted; numbered column headings are percentiles, values in feet below land surface]
Most recent measurement: 24.45 feet below land surface datum on 2024-05-13
Water-level percentile category for May: 25 - 75
| Month | Lowest Median | 5th | 10th | 25th | 50th | 75th | 90th | 95th | Highest Median | Years |
|---|---|---|---|---|---|---|---|---|---|---|
| Jan | 27.12 | 27.00 | 26.69 | 26.31 | 25.82 | 24.71 | 23.87 | 22.34 | 21.68 | 41 |
| Feb | 27.45 | 27.02 | 26.77 | 26.12 | 25.47 | 24.34 | 23.06 | 22.28 | 22.22 | 45 |
| Mar | 27.60 | 27.10 | 26.75 | 25.81 | 24.99 | 23.46 | 22.42 | 22.15 | 21.94 | 46 |
| Apr | 27.00 | 26.81 | 25.95 | 25.27 | 24.42 | 22.90 | 21.69 | 21.26 | 21.20 | 44 |
| May | 26.86 | 26.51 | 25.65 | 25.07 | 23.82 | 22.42 | 21.56 | 21.06 | 20.89 | 43 |
| Jun | 26.82 | 26.32 | 25.59 | 24.73 | 23.78 | 22.82 | 21.89 | 21.23 | 21.00 | 43 |
| Jul | 26.76 | 26.30 | 25.62 | 24.81 | 23.84 | 22.93 | 22.02 | 21.55 | 20.51 | 46 |
| Aug | 26.66 | 26.47 | 25.88 | 25.01 | 24.34 | 23.35 | 22.66 | 22.40 | 22.13 | 45 |
| Sep | 26.56 | 26.40 | 25.95 | 25.31 | 24.60 | 23.85 | 23.36 | 22.97 | 22.68 | 42 |
| Oct | 26.88 | 26.78 | 26.26 | 25.81 | 25.07 | 24.42 | 24.01 | 23.70 | 23.53 | 44 |
| Nov | 27.13 | 27.06 | 26.57 | 26.07 | 25.38 | 24.89 | 24.34 | 24.18 | 21.06 | 40 |
| Dec | 27.25 | 26.81 | 26.57 | 26.39 | 25.68 | 25.16 | 24.41 | 23.66 | 20.97 | 43 |
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Disclaimer
Data include approved, quality-assured data that may be published, and more recent provisional data, whose accuracy has not been verified. The data are being provided to meet the need for timely best science, and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Last updated: May 14, 2024
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