Table 1. Wells Embayment Sand Budget
| Geological Environment | Percent of volume | Volume (million m3) | Volume (million yd3) |
|---|
| Dune Sand Volumes |
| Frontal Dune | 32% | 3 | 4 |
| Back Dune | 68% | 6 | 9 |
| Total Dune | 100% | 10 | 13 |
| Coastal Barrier Sand Volumes |
| Dune Sand | 15% | 10 | 13 |
| Shoreface (beach) | 85% | 57 | 75 |
| Total Barrier | 100% | 67 | 88 |
| Marine Sand Volumes |
| Shoreface (beach) | 59% | 57 | 75 |
| Bald Head Deposit | 9% | 9 | 12 |
| Offshore Sand, Thin | 32% | 32 | 42 |
| Total Marine Sand | 100% | 98 | 129 |
| Total Sand in Wells Bay, All Sources |
| Coastal Barrier | 62% | 67 | 88 |
| Bald Head Deposit | 8% | 9 | 12 |
| Offshore Sand | 30% | 32 | 42 |
| Total Bay Sand | 100% | 108 | 142 |
Sand Budget Notes:
- Conversion factor 1.307 yd3/m3; rounding errors may introduce some variability between metric and English units. One acre = 4840 yd2 = 4047 m2.
- Dune sand volumes based on MGS Coastal Sand Dune Maps, flood zone elevations, topography, and work of Montello et al., (1992) and calculated by S. Dickson, 2000.
- Marine sand volumes based on Miller (1998) and interpretation of his results by S. Dickson, 3/28/01; revised by S. Dickson, D. Belknap, and J. Kelley, from 5/3/01 correspondence.
- No estimates include sand volumes in estuarine channels. These channel sands include marginal bars and tidal deltas. There are 5 tidal inlets and associated sand bars in Wells Embayment that might include, in aggregate, about 1 million cubic yards of sand.
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Last updated on February 7, 2006.
