Arapahoe
North Carolina Division of Water Resources
Located in Pamlico County, North Carolina, this groundwater monitoring location is associated with a water well in the Castle Hayne aquifer.
Well Construction
| Depth | Description | |
|---|---|---|
| -1.21-340.0 ft | 4.0 in diameter black ductile iron casing | |
| 340.0-380.0 ft | 4.0 in diameter open hole screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-49.0 ft | - | Surficial Aquifer |
| 49.0-64.0 ft | - | Yorktown CU |
| 64.0-126.0 ft | - | Yorktown Aquifer |
| 126.0-174.0 ft | - | Castle Hayne CU |
| 174.0-492.0 ft | - | Castle Hayne Aquifer |
| 492.0-541.0 ft | - | Beaufort CU |
| 541.0-670.0 ft | - | Beaufort Aquifer |
| 670.0-718.0 ft | - | Peedee CU |
| 718.0-930.0 ft | - | Peedee Aquifer |
| 930.0-1036.0 ft | - | Black Creek CU |
| 1036.0-1050.0 ft | - | Black Creek Aquifer |
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Agency North Carolina Department of Environmental Quality Division of Water Resources Site Name Arapahoe Site Number S18U5 Site Type WELL Lat/Long (NAD83) 35.0867, -76.8356 Well Depth 380 Feet Elevation (NAVD88) 39.065 ft Latitude 35.086676 Longitude -76.835587 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 1998-08-17 00:00:00 EST Specific Conductance 786 uS/cm None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 1998-08-17 00:00:00 EST Salinity 0.4 ppth None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 1998-08-17 00:00:00 EST Chloride 130 mg/L 0 None unfiltered titration None Unknown NCDWR YSI Unknown NCDWR 1999-09-27 00:00:00 EST Salinity 0.4 ppth None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 1999-09-27 00:00:00 EST Chloride 131 mg/L 0 None unfiltered titration None Unknown NCDWR YSI Unknown NCDWR 1999-09-27 00:00:00 EST Specific Conductance 810 uS/cm None unfiltered YSI None Unknown NCDWR YSI Unknown NCDWR 2004-09-30 00:00:00 EST Chloride 125 mg/L 0 None unfiltered titration None Unknown NCDWR titration Unknown NCDWR 2004-09-30 00:00:00 EST Specific Conductance 891 uS/cm None unfiltered YSI None Unknown NCDWR titration Unknown NCDWR 2004-09-30 00:00:00 EST Salinity 0.4 ppth 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 43.37 38.99 32.75 1972-01-26 2025-04-21 9059 53.2 40.45 0.0 Statistics Calculated 2025-04-22 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 41.25 40.64 39.46 38.77 36.19 34.74 34.16 29 29 Feb 41.20 40.22 39.28 38.67 37.23 34.73 34.13 33 33 Mar 40.29 39.99 39.06 38.30 36.63 34.61 33.72 30 30 Apr 40.20 39.79 39.02 38.32 36.50 34.47 32.75 32 32 May 40.90 40.06 39.36 38.50 35.68 34.68 34.01 34 34 Jun 42.35 41.77 40.43 39.55 37.75 35.09 34.45 29 29 Jul 42.71 41.96 41.44 40.46 38.27 35.12 34.89 27 27 Aug 42.99 41.80 41.22 39.85 37.71 35.34 34.93 33 33 Sep 41.83 41.56 40.65 39.61 36.57 35.27 34.82 31 31 Oct 41.73 41.15 40.53 39.23 37.57 35.28 34.72 30 30 Nov 41.53 41.11 40.17 39.28 37.35 35.22 34.55 33 33 Dec 41.46 41.25 39.98 39.01 37.56 35.13 34.63 29 29 Statistics Calculated 2025-04-22 -
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