HydroBASINS lev08 watershed · #7080489590
Bassin de Chagrin River
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 : Cuyahoga, Geauga, Lake, Lake Erie, Portage
Sub-basin area
1 023,3km²
Upstream area
1 023,3km²
Discharge
10,72m³/s
Mean elev.
268m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 338.4 km²33.0% of basin
- 334.3 km²32.6% of basin
- Lake158.0 km²15.4% of basin
- 136.1 km²13.3% of basin
- 58.0 km²5.7% of basin
30 intersecting protected areas
Holden Arboretum
IUCN VArboretum
14.89 km² overlap
South Chagrin
IUCN Not AssignedReservation
4.45 km² overlap
Bass Lake
IUCN VPreserve
2.08 km² overlap
Chapin
IUCN VState Forest
1.51 km² overlap
Reserve Program
1.33 km² overlap
Orchard Hills
IUCN VPreserve
0.86 km² overlap
Sugarbush Farms Llc
IUCN VLocal Conservation Area
0.76 km² overlap
Sherwin
IUCN VPreserve
0.74 km² overlap
H
IUCN VNature Preserve
0.66 km² overlap
21 more protected areassorted by overlap area
Conservation Area
0.66 km² overlap
Aurora Sanctuary
IUCN VNature Preserve
0.64 km² overlap
Centerville Mills
IUCN VNature Preserve
0.60 km² overlap
Novack Audubon Sanctuary
IUCN VNature Preserve
0.56 km² overlap
Ellerin Property
IUCN VLocal Conservation Area
0.53 km² overlap
Mayer
IUCN VPreserve
0.44 km² overlap
Muggleton
IUCN VConservation Area
0.35 km² overlap
Beaver Creek
IUCN VPreserve
0.33 km² overlap
Hach-Otis
IUCN VState Nature Preserve
0.33 km² overlap
Carpenter Road
IUCN Not AssignedConservation Easement
0.32 km² overlap
West
IUCN VNature Preserve
0.31 km² overlap
Sunnybrook
IUCN VPreserve
0.30 km² overlap
White Tail Run
IUCN VPreserve
0.30 km² overlap
Bevcar
IUCN VPreserve
0.27 km² overlap
Becvar
IUCN VPreserve
0.27 km² overlap
Preserve
0.26 km² overlap
Chagrin Valley Ravines, Ridges & Riparian Preservation
IUCN Not AssignedRiparian Area management
0.25 km² overlap
Reserve Program
0.22 km² overlap
Waite Hill
IUCN VReserve
0.22 km² overlap
Private Conservation Land
0.21 km² overlap
Forest Ridge
IUCN VPreserve
0.21 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 380 distinct species · 812 369 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Chagrin River : 26 espèces reliées par 67 interactions GloBI sur 4 types (connectance 10.6%, filtre Serrano α=0.2). 10 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°
9,3°C
Annual rain
985mm
Moisture idx (CMI)
0,04
Runoff
322mm/an
PET
943mm
AET
741mm
Mean slope
1,3°
Water table
114cm
Forest
54%
Crops
6%
Urban
13%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)