HydroBASINS lev08 watershed · #7080388150
Bassin de Rock 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 3 administrative regions : Charlevoix, Lake Michigan, Mackinac
Sub-basin area
1 361,2km²
Upstream area
166 537,1km²
Discharge
1 041,86m³/s
Mean elev.
184m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Milakokia River583 km²
- Bassin · #708039069041 km²
3 dept-equivalent regions (GADM L2)
- Lake Michigan937.1 km²68.7% of basin
- 243.4 km²17.8% of basin
- 184.1 km²13.5% of basin
19 intersecting protected areas
State Forest
120.55 km² overlap
Research Area
69.50 km² overlap
Natural Area
11.36 km² overlap
Natural Area High Island
IUCN VNatural Area
5.98 km² overlap
Natural Area Hog Island
IUCN VNatural Area
5.35 km² overlap
Natural Area
2.07 km² overlap
Barney's
IUCN VLake
1.21 km² overlap
Natural Area French Bay
IUCN VNatural Area
0.49 km² overlap
Little Sand Bay
IUCN VNature Preserve
0.37 km² overlap
10 more protected areassorted by overlap area
Research Area
0.22 km² overlap
State Forest
0.18 km² overlap
George & Althea Petritz
IUCN VNature Preserve
0.12 km² overlap
Gull Harbor
IUCN VPreserve
0.10 km² overlap
Conn's Cove
IUCN VNature Preserve
0.10 km² overlap
Michigan Islands
IUCN IVNational Wildlife Refuge
0.01 km² overlap
National Wildlife Refuge
0.01 km² overlap
Marine Protected Area
0.01 km² overlap
Erber
IUCN VNature Preserve
0.01 km² overlap
Margaret P. Erber
IUCN VNature Preserve
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 722 distinct species · 57 466 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 44 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 Rock River : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 81 interactions GloBI sur 4 types (connectance 8.6%, 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°
6,0°C
Annual rain
783mm
Moisture idx (CMI)
-0,02
Runoff
383mm/an
PET
800mm
AET
605mm
Mean slope
0,3°
Water table
38cm
Forest
24%
Crops
2%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)