Hadnot Point
North Carolina Division of Water Resources
Located in Onslow County, North Carolina, this groundwater monitoring location is associated with a water well in the Northern Atlantic Coastal Plain aquifer system.
Well Construction
| Depth | Description | |
|---|---|---|
| -3.37-908.0 ft | 4.0 in diameter black ductile iron casing | |
| 908.0-918.0 ft | 2.5 in diameter galvanized steel screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-102.0 ft | - | Surficial Aquifer |
| 102.0-118.0 ft | - | Castle Hayne CU |
| 118.0-420.0 ft | - | Castle Hayne Aquifer |
| 420.0-460.0 ft | - | Peedee CU |
| 460.0-696.0 ft | - | Peedee Aquifer |
| 696.0-858.0 ft | - | Black Creek CU |
| 858.0-1083.0 ft | - | Black Creek Aquifer |
| 1083.0-1194.0 ft | - | Upper Cape Fear CU |
| 1194.0-1290.0 ft | - | Upper Cape Fear Aquifer |
| 1290.0-1326.0 ft | - | Lower Cape Fear CU |
| 1326.0-1526.0 ft | - | Lower Cape Fear Aquifer |
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Agency North Carolina Department of Environmental Quality Division of Water Resources Site Name Hadnot Point Site Number X24S2 Site Type WELL Lat/Long (NAD83) 34.6922, -77.3512 Well Depth 918 Feet Elevation (NAVD88) 20.343 ft Latitude 34.692198 Longitude -77.35118 Local Aquifer Name Black Creek (None) National Aquifer Name Northern Atlantic Coastal Plain aquifer system (S100NATLCP) Aquifer Type CONFINED Water-Level Well Type Trend Water-Level Well Characteristics Known Changes Water Quality Network water_quality_network Additional info Link 1 -
Activity Start Date Activity Start Time Characteristic Name Measure Value Units Detection Limit Value Type Sample Fraction Method Name Analytical Method System Sample Method ID Sample Method ID Context Sample Method Name Activity Type Code Data Provided By 1987-01-28 00:00:00 EST Alkalinity4.5 690.00 mg/L 1 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Calcium (Ca) 4.70 mg/L None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Total Dissolved Solids (TDS) 10000.00 mg/L 0.1 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Magnesium (Mg) 74.00 mg/L 0.05 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Phosphorus Total as P 0.14 mg/L 0.05 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Sulfate 470.00 mg/L None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Specific Conductance 11000.00 uS/cm None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Bicarbonate 840.00 mg/L 1 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Copper (Cu) 17.00 ug/L None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST TKN (Total Kjeldahl Nitrogen) 1.40 mg/L 0.1 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Hardness (non-carb) 1.00 mg/L 1 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Sodium (Na) 3600.00 mg/L None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Iron (Fe) 70.00 ug/L 50 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST NH3-N 1.30 mg/L 0.01 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Chloride 6300.00 mg/L 1 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Hardness (calculated) 510.00 mg/L 1 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST NO2+NO3-N 0.01 mg/L 0.01 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Silica Not Detected mg/L 1 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Aluminum (Al) 50.00 ug/L 50 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Alkalinity8.3 1.00 mg/L 1 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Carbonate 1.00 mg/L 1 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Fluoride Not Detected mg/L 0.1 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Manganese (Mn) 75.00 ug/L None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Potassium (K) 120.00 mg/L None unfiltered None None Unknown NCDWR None Unknown NCDWR 1987-01-28 00:00:00 EST Zinc (Zn) 21.00 ug/L 20 None unfiltered None None Unknown NCDWR None Unknown NCDWR 1999-10-25 00:00:00 EST Chloride 5330 mg/L 0 None unfiltered titration None Unknown NCDWR titration Unknown NCDWR 1999-10-25 00:00:00 EST Salinity 9.6 ppth None unfiltered YSI None Unknown NCDWR titration Unknown NCDWR 1999-10-25 00:00:00 EST Specific Conductance 16400 uS/cm None unfiltered YSI None Unknown NCDWR titration Unknown NCDWR 2019-10-07 00:00:00 EST Salinity 4.6 ppth None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2019-10-07 00:00:00 EST Specific Conductance 8273 uS/cm None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2019-10-07 00:00:00 EST Chloride 2695 mg/L 0 None unfiltered titration None Unknown NCDWR YSI Unknown NCDWR 2019-10-07 00:00:00 EST pH 8.85 None None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2022-03-30 00:00:00 EST Salinity 8.42 ppth None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2022-03-30 00:00:00 EST Specific Conductance 14465 uS/cm None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2022-03-30 00:00:00 EST Chloride 5009 mg/L 0 None unfiltered titration None Unknown NCDWR YSI Unknown NCDWR 2022-03-30 00:00:00 EST pH 8.92 None None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2023-09-19 00:00:00 EST Specific Conductance 13511 uS/cm None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2023-09-19 00:00:00 EST Chloride 4292 mg/L 0 None unfiltered titration None Unknown NCDWR YSI Unknown NCDWR 2023-09-19 00:00:00 EST pH 7.81 None None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2023-09-19 00:00:00 EST Salinity 7.81 ppth None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2025-09-22 00:00:00 EST Chloride 4490 mg/L 0 None unfiltered titration None Unknown NCDWR titration Unknown NCDWR 2025-09-22 00:00:00 EST pH 9.62 None None unfiltered YSI None Unknown NCDWR titration Unknown NCDWR 2025-09-22 00:00:00 EST Salinity 7.4 ppth None unfiltered YSI None Unknown NCDWR titration Unknown NCDWR 2025-09-22 00:00:00 EST Specific Conductance 12808 uS/cm None unfiltered YSI None Unknown NCDWR titration Unknown NCDWR -
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How do we calculate statistics?
Overall Water Level Statistics (Depth to water, feet below land surface) Lowest Water Level Median Water Level Highest Water Level First Measurement Date Last Measurement Date Number of Measurements Years of Record Latest Value Latest Percentile 55.93 49.28 10.68 1987-02-04 2026-02-23 4783 39.0 47.37 74.07 Statistics Calculated 2026-04-17 Monthly Water Level Statistics (Depth to water, feet below land surface) Month Lowest Median 10th Percentile 25th Percentile 50th Percentile 75th Percentile 90th Percentile Highest Median Number of Measurements Years of Record Jan 55.66 55.44 53.47 49.02 47.73 13.75 12.49 16 16 Feb 55.93 55.33 52.92 49.34 46.41 13.79 10.68 26 26 Mar 55.50 55.27 53.11 49.74 48.02 13.57 11.79 15 15 Apr 55.54 55.18 52.70 49.80 48.22 13.91 11.96 16 16 May 55.78 55.35 53.00 49.42 45.57 33.99 12.41 28 28 Jun 55.59 55.09 51.95 49.25 45.64 15.07 12.55 18 18 Jul 55.50 55.06 52.53 50.18 48.25 15.13 13.07 17 17 Aug 55.83 55.60 53.18 48.84 45.38 17.11 11.92 27 27 Sep 55.54 55.19 52.91 49.38 48.09 34.40 13.27 17 17 Oct 55.42 54.49 51.33 49.04 47.44 13.67 11.25 19 19 Nov 55.73 55.52 53.60 49.24 46.98 15.54 11.44 26 26 Dec 55.46 54.96 50.44 49.06 48.06 12.99 11.47 15 15 Statistics Calculated 2026-04-17 -
Operated in cooperation with:
