Table 2. Saco Bay Sand Budget
| Geological Environment | Percent of volume | Volume (million m3) | Volume (million yd3) |
|---|
| Dune Sand Volumes |
| Frontal Dune | 17% | 2.5 | 3.3 |
| Back Dune | 83% | 12.4 | 16.2 |
| Total Dune | 100% | 14.9 | 19.5 |
| Coastal Barrier Sand Volumes |
| Dune Sand | 21% | 15 | 20 |
| Shoreface (beach) | 79% | 56 | 73 |
| Total Barrier | 100% | 71 | 93 |
| Marine Sand Volumes |
| Shoreface (beach) | | 56 | 73 |
| Offshore Sand, Thin | | | |
| Total Marine Sand | 100% | | |
| Total Sand in Wells Bay, All Sources |
| Coastal Barrier | | 71 | 93 |
| Offshore Sand | | | |
| Total Bay Sand | 100% | | |
|
| Dune Area (Map-Based) | Vol. (mill. m3) | Vol. (mill. yd3) | Vol. % |
|---|
| Frontal Dune | 117.7 (13.2%) | 2.52 | 16.8% |
| Back Dune | 771.4 (86.8%) | 12.43 | 83.2% |
| Total Dune | 889.1 | 14.95 | 100.0% |
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.
- Volumes based on thicknesses of 4.5 m in High Hazard Area (frontal dune and A-Zone); 5.5 m in Intermediate Hazard Area (frontal dune and C-Zone); 4.0 m in Low Hazard Area (back dune and A-Zone); and 5.0 m in Very Low Hazard Area (back dune and C-Zone).
|
Last updated on February 3, 2006.
