HydroBASINS lev08 watershed · #7080464060
Bassin de Tonawanda 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 7 administrative regions across 2 countries : Erie, Genesee, Lake Ontario, Niagara, Orleans +1
Sub-basin area
1 892,5km²
Upstream area
1 892,8km²
Discharge
27,24m³/s
Mean elev.
265m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
7 dept-equivalent regions (GADM L2)
- ErieNew York · United States624.1 km²32.9% of basin
- GeneseeNew York · United States534.4 km²28.2% of basin
- NiagaraNew York · United States382.7 km²20.2% of basin
- WyomingNew York · United States333.9 km²17.6% of basin
- Lake OntarioNew York · United States19.5 km²1.0% of basin
- 0.9 km²0.0% of basin
- OrleansNew York · United States0.4 km²0.0% of basin
18 intersecting protected areas
Niagara River Corridor
IUCN IaWetland of International Importance (Ramsar Site)
23.35 km² overlap
Tonawanda
IUCN VWildlife Management Area
15.12 km² overlap
Reserve Program
1.79 km² overlap
John White
IUCN VWildlife Management Area
1.11 km² overlap
Great Baehre Swamp
IUCN VWildlife Management Area
1.09 km² overlap
Tillman Road
IUCN VWildlife Management Area
0.96 km² overlap
Counterfeiter's Ledge
IUCN VPrivate Conservation Land
0.84 km² overlap
Clarence Town Lands
IUCN VLocal Conservation Area
0.81 km² overlap
Gouinlock Pond
IUCN VPreserve
0.72 km² overlap
9 more protected areassorted by overlap area
Reserve Program
0.66 km² overlap
Reserve Program
0.62 km² overlap
Wyoming County Lands
IUCN VLocal Conservation Area
0.35 km² overlap
Reserve Program
0.33 km² overlap
Navy Island National Historic Site
IUCN Not ApplicableNational Historic Site
0.26 km² overlap
Onondaga Escarpment
IUCN VUnique Area
0.21 km² overlap
Spicer Creek
IUCN VWildlife Management Area
0.14 km² overlap
Motor Island
IUCN VState Wildlife Management Area
0.06 km² overlap
Iroquois
IUCN IVNational Wildlife Refuge
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 576 distinct species · 996 782 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Tonawanda Creek : 25 espèces reliées par 67 interactions GloBI sur 3 types (connectance 11.9%, filtre Serrano α=0.2). 9 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°
8,0°C
Annual rain
937mm
Moisture idx (CMI)
0,04
Runoff
458mm/an
PET
896mm
AET
689mm
Mean slope
1,1°
Water table
74cm
Forest
44%
Crops
27%
Urban
18%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)