Direction of Ground-Water Flow in the Surficial Aquifer in the Vicinity of Impact Areas G-10 and K-2, Marine Corps Base Camp Lejeune, North Carolina, 2004

Scientific Investigations Report 2004–5270
By Stephen L. Harden, Stephen S. Howe, and Silvia Terziotti

Table 2: Summary of well information used in developing regression of land-surface altitude and water-level altitude for the surficial aquifer at Impact Areas K-2 and G-10 at Camp Lejeune, North Carolina.
[ft, feet; BLS, below land surface; altitude is referenced to NAVD 88]
Local well name	Land-surface altitude (ft)	Depth to water (ft BLS)	Water-level altitude (ft)
G10MW1	42.56	5.72	36.84
G10MW2	16.34	3.82	12.52
G10MW3	41.02	5.91	35.11
G10MW4	17.42	6.29	11.13
G10MW5	33.38	13.01	20.37
G10MW6	38.27	3.74	34.53
G10MW7	42.47	4.45	38.02
G10MW8	29.18	10.62	18.56
G10MW9	29.33	10.39	18.94
G10MW10	36.08	5.28	30.80
G10MW11	39.87	3.37	36.50
G10MW12	52.19	5.78	46.41
G10MW13	43.70	4.39	39.31
K2MW1	21.79	7.31	14.48
K2MW2	12.52	7.79	4.73
K2MW3	24.49	6.30	18.19
K2MW4	32.15	1.12	31.03
K2MW5	21.49	8.39	13.10
K2MW6	27.79	2.03	25.76
K2MW7	24.64	3.18	21.46
K2MW8	2.57	1.20^a	1.37
K2MW9	1.99	2.95^a	-0.96
ON-294	29.83	4.53	25.30

^aBecause of access restrictions at site K-2, it was not possible to measure the water levels at wells K2MW8 and K2MW9 on August 23, 2004, when all other wells were measured; thus, it was necessary to use the water levels obtained during installation of wells K2MW8 and K2MW9 on February 11, 2004, and March 11, 2004, respectively. Based on the low land-surface altitude and position of wells K2MW8 and K2MW9 along the New River (fig. 4), the magnitude of seasonal water-level change at these sites is likely similar to the tidal fluctuation of about 2 feet for the New River. The water levels utilized for wells K2MW8 and K2MW9 in developing the regression equation for estimating water-table altitudes at the Impact Areas are considered to be fairly represen-tative of those that would have been obtained on August 23, 2004, when the other wells were measured.

Abstract || Introduction || Methods || Hydrogeologic Setting || Direction of Flow || Trends || Summary || References || Appendix

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