HydroBASINS lev08 watershed · #7080042910
Bassin de County Line Branch
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 4 administrative regions : Brunswick, New Hanover, Onslow, Pender
Sub-basin area
621,2km²
Upstream area
621,2km²
Discharge
4,78m³/s
Mean elev.
5m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 228.6 km²36.8% of basin
- 156.1 km²25.1% of basin
- 111.4 km²17.9% of basin
- 24.5 km²4.0% of basin
30 intersecting protected areas
Marine Protected Area
23.43 km² overlap
Marine Protected Area
22.05 km² overlap
Marine Protected Area
17.74 km² overlap
Masonboro Island
IUCN VNational Estuarine Research Reserve
16.88 km² overlap
Marine Protected Area
7.12 km² overlap
Zekes Island
IUCN VNational Estuarine Research Reserve
5.17 km² overlap
Carolina Beach State Park
IUCN IVMarine Protected Area
2.55 km² overlap
Marine Protected Area
0.77 km² overlap
Bald Head Woods
IUCN VCoastal Reserve
0.77 km² overlap
21 more protected areassorted by overlap area
Preserve
0.39 km² overlap
Stump Sound
IUCN VPreserve
0.26 km² overlap
Permuda Island
IUCN VCoastal Reserve
0.25 km² overlap
Marine Protected Area
0.25 km² overlap
Preserve
0.22 km² overlap
Masonboro Island
IUCN IIIState Park
0.15 km² overlap
Marine Protected Area
0.15 km² overlap
Lea Island Audubon
IUCN VSanctuary
0.13 km² overlap
Lea Island
IUCN VState Natural Area
0.10 km² overlap
Smith Island Land Trust
IUCN VPreserve
0.09 km² overlap
Preserve
0.09 km² overlap
Young I
IUCN Not AssignedConservation Easement
0.04 km² overlap
Island Associates
IUCN Not AssignedConservation Easement
0.01 km² overlap
Broadfoot
IUCN VNature Preserve
0.00 km² overlap
Young II
IUCN Not AssignedConservation Easement
0.00 km² overlap
Carr
IUCN Not AssignedConservation Easement
0.00 km² overlap
Reyner
IUCN Not AssignedConservation Easement
0.00 km² overlap
Overstreet
IUCN Not AssignedConservation Easement
0.00 km² overlap
Cauthen Lacin
IUCN Not AssignedConservation Easement
0.00 km² overlap
Hobgood
IUCN Not AssignedConservation Easement
0.00 km² overlap
Klaine
IUCN Not AssignedConservation Easement
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 171 distinct species · 544 605 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de County Line Branch : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 82 interactions GloBI sur 4 types (connectance 10.5%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
17,2°C
Annual rain
1 390mm
Moisture idx (CMI)
0,07
Runoff
450mm/an
PET
1 288mm
AET
1 108mm
Mean slope
0,3°
Water table
16cm
Forest
38%
Crops
6%
Urban
24%
Protected
32%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)