Approximate potentiometric surface of the bedrock aquifer at Great Bay, southeastern New Hampshire, 2001
Open-File Report
2003-278
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Abstract
Ground-water elevations (heads) in 265 wells were used to map the potentiometric-head surface in the fractured-bedrock aquifer adjacent to Great Bay, N.H. Remotely sensed data, spring-water temperatures and specific conductances, land-surface elevations, and simulated heads were also used to guide construction of the potentiometric surface. Heads in the bedrock aquifer locally varied more than 20 ft (feet) between adjacent wells as little as 200 ft apart. The depth to water below land surface was greater on the western and northwestern sides of the bay (about 20 ft) than on the southern and eastern sides (about 8 ft). Topography has a greater effect on heads than does temporal variation or measurement accuracy. Head gradients are steeper at the southern side of Great Bay, where the topographic relief is greatest, than at the northwestern and northeastern sides.
Suggested Citation
Roseen, R.M., Degnan, J., Brannaka, L., Ballestero, T., and Mack, T.J., 2003, Approximate potentiometric surface of the bedrock aquifer at Great Bay, southeastern New Hampshire, 2001: U.S. Geological Survey Open-File Report 2003-278, 1 map ; 56 x 56 cm., on sheet 69 x 81 cm., folded in envelope 24 x 20 cm. , https://doi.org/10.3133/ofr03278.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Approximate potentiometric surface of the bedrock aquifer at Great Bay, southeastern New Hampshire, 2001 |
| Series title | Open-File Report |
| Series number | 2003-278 |
| DOI | 10.3133/ofr03278 |
| Year Published | 2003 |
| Language | ENGLISH |
| Description | 1 map ; 56 x 56 cm., on sheet 69 x 81 cm., folded in envelope 24 x 20 cm. |