HydroBASINS lev08 watershed · #7080525120
Bassin de West Branch Mahantango Creek
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 5 administrative regions : Dauphin, Juniata, Northumberland, Perry, Snyder
Sub-basin area
337,8km²
Upstream area
49 837,5km²
Discharge
863,35m³/s
Mean elev.
227m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Mahanoy Creek446 km²
- Bassin de Susquehanna River33 km²
5 dept-equivalent regions (GADM L2)
- 201.9 km²59.7% of basin
- 75.4 km²22.3% of basin
- 56.9 km²16.8% of basin
- Perry3.6 km²1.1% of basin
- 0.5 km²0.1% of basin
1 intersecting protected areas
Reserve Program
0.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 492 distinct species · 44 606 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 West Branch Mahantango Creek : 24 espèces reliées par 80 interactions GloBI sur 3 types (connectance 12.0%, filtre Serrano α=0.2). 13 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°
10,0°C
Annual rain
1 062mm
Moisture idx (CMI)
0,02
Runoff
458mm/an
PET
1 042mm
AET
805mm
Mean slope
5,7°
Water table
322cm
Forest
92%
Crops
40%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)