Gum Neck
North Carolina Division of Water Resources
Located in Tyrrell County, North Carolina, this groundwater monitoring location is associated with a water well in the Castle Hayne aquifer.
Well Construction
| Depth | Description | |
|---|---|---|
| -0.86-590.0 ft | 4.0 in diameter black ductile iron casing | |
| 590.0-701.0 ft | 4.0 in diameter open hole screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-24.0 ft | - | Surficial Aquifer |
| 24.0-52.0 ft | - | Yorktown CU |
| 52.0-424.0 ft | - | Yorktown Aquifer |
| 424.0-538.0 ft | - | Castle Hayne CU |
| 538.0-896.0 ft | - | Castle Hayne Aquifer |
| 896.0-964.0 ft | - | Beaufort CU |
| 964.0-1088.0 ft | - | Beaufort Aquifer |
| 1088.0-1184.0 ft | - | Upper Cape Fear CU |
| 1184.0-1359.0 ft | - | Upper Cape Fear Aquifer |
| 1359.0-1404.0 ft | - | Lower Cape Fear CU |
| 1404.0-1531.0 ft | - | Lower Cape Fear Aquifer |
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Agency North Carolina Department of Environmental Quality Division of Water Resources Site Name Gum Neck Site Number L10A3 Site Type WELL Lat/Long (NAD83) 35.7398, -76.1806 Well Depth 701 Feet Elevation (NAVD88) 2.223 ft Latitude 35.739773 Longitude -76.180591 Local Aquifer Name Castle Hayne (None) National Aquifer Name Castle Hayne aquifer (N400CSLHYN) Aquifer Type CONFINED Water-Level Well Type Trend Water-Level Well Characteristics Background 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 1976-11-04 00:00:00 EST Chloride 2820 mg/L 0 None unfiltered titration None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Manganese (Mn) 50.00 ug/L 50 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Bicarbonate 616.00 mg/L 1 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Total Dissolved Solids (TDS) 5810.00 mg/L 0.1 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Lithium (Li) 100.00 ug/L 50 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Phosphorus Total as P 0.05 mg/L 0.05 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Specific Conductance 7800.00 uS/cm None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Iron (Fe) 390.00 ug/L 50 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST NH3-N 0.05 mg/L 0.05 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Chloride 2900.00 mg/L 1 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST TKN (Total Kjeldahl Nitrogen) 0.10 mg/L 0.1 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Hardness (non-carb) 220.00 mg/L None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Sulfate 100.00 mg/L None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Aluminum (Al) 100.00 ug/L 100 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Alkalinity8.3 1.00 mg/L 1 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Carbonate 1.00 mg/L 1 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Hardness (calculated) 720.00 mg/L 1 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST NO2+NO3-N 0.05 mg/L 0.05 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Sodium (Na) 1900.00 mg/L None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Specific Conductance 7200 uS/cm None unfiltered YSI None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Alkalinity4.5 505.00 mg/L 1 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Calcium (Ca) 60.00 mg/L None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Fluoride 0.10 mg/L 0.1 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Magnesium (Mg) 120.00 mg/L 0.05 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 1976-11-04 00:00:00 EST Silica 13.00 mg/L 1 None unfiltered None None Unknown NCDWR titration Unknown NCDWR 2023-09-15 00:00:00 EST Salinity 2 ppth None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2023-09-15 00:00:00 EST pH 8.48 None None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2023-09-15 00:00:00 EST Specific Conductance 4120 uS/cm None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2023-09-15 00:00:00 EST Chloride 863 mg/L 0 None unfiltered titration None Unknown NCDWR YSI Unknown NCDWR 2025-09-12 00:00:00 EST pH 9.3 None None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2025-09-12 00:00:00 EST Specific Conductance 8935 uS/cm None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2025-09-12 00:00:00 EST Chloride 2673 mg/L 0 None unfiltered titration None Unknown NCDWR YSI Unknown NCDWR 2025-09-12 00:00:00 EST Salinity 5 ppth None unfiltered YSI None Unknown NCDWR YSI 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 5.27 2.60 -0.39 1976-11-04 2026-01-11 4668 49.2 2.80 24.1 Statistics Calculated 2026-04-04 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 4.95 3.84 2.81 2.27 1.0 0.68 0.52 28 28 Feb 4.86 4.58 3.84 2.70 2.16 0.73 0.50 24 24 Mar 4.79 4.54 3.41 2.62 0.66 0.30 0.20 14 14 Apr 4.67 4.24 2.89 2.47 0.70 0.44 0.31 20 20 May 4.85 4.37 3.86 2.62 2.09 0.54 0.31 29 29 Jun 4.55 4.32 3.28 2.57 2.43 0.64 0.64 13 13 Jul 4.46 3.63 2.66 1.27 0.83 0.53 0.00 27 27 Aug 4.95 4.58 3.93 2.60 2.06 0.76 0.36 29 29 Sep 4.57 3.81 2.85 2.47 0.88 0.61 0.35 20 20 Oct 4.38 3.95 3.40 2.70 2.41 0.93 0.80 16 16 Nov 4.95 4.52 3.95 2.76 2.43 0.89 0.12 25 25 Dec 4.40 4.15 3.20 2.74 2.2 0.77 0.73 14 14 Statistics Calculated 2026-04-04 -
Operated in cooperation with:
