Dam Inventory (0)
Ditches in the Great Bay and Hapton - Seabrook Estuaries (1)
DFIRM Status (3)
| Effective 9/30/2015 |
| Effective 3/19/2013 |
| Effective 2/20/2013 |
| Effective 4/19/2010 |
| Effective 9/25/2009 |
| Effective 2/20/2008 |
| Effective 5/23/2006 |
| Effective 5/17/2005 |
| No Data Available |
Cross Sections (4)
| Lettered |
Base Flood Elevations (5)
Flood Hazard - Lines (6)
| SFHA/Flood Zone Boundary |
| Limit Lines |
| Zone Break |
Flood Hazard - Areas (7)
| 1 pct. Annual Chance Flood Hazard |
| Floodway |
| 0.2 pct. Annual Chance Flood Hazard |
| Area of Undetermined Flood Hazard |
| Area Protected by Levee |
Stream Centerlines (9)
| Perennial Stream |
| Intermittent Stream |
Water Bodies (10)
| Lake/Pond |
| Reservoir |
| Estuary |
| Swamp/Marsh |
Other Water Features (11)
|
| River |
| Spillway |
| Inundation Area |
| Dam/Weir |
| Canal/Ditch |
| Rapids |
50-foot Zone (14)
100-foot Zone (15)
150-foot Zone (16)
200-foot Zone (17)
250-foot Zone (18)
300-foot Zone (19)
50-foot Zone (21)
100-foot Zone (22)
150-foot Zone (23)
200-foot Zone (24)
250-foot Zone (25)
300-foot Zone (26)
Watersheds - HUC 8 (28)
Sub Watersheds - HUC 12 (29)
Aquifer Transmissivity (30)
| Less than 2000 feet sq./day |
| 2000 - 4000 feet sq./day |
| Greater than 4000 feet sq./day |
2023 LTPG Eligibility Area – Great Bay Watershed (31)
2024 LTPG Eligibility Area – Great Bay Watershed (32)
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