HydroBASINS lev08 watershed · #7080423000
Bassin de South Branch Au Sable 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 : Crawford, Kalkaska, Ogemaw, Oscoda, Roscommon
Sub-basin area
1 038,8km²
Upstream area
1 039km²
Discharge
7,81m³/s
Mean elev.
371m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- Crawford429.3 km²41.2% of basin
- 416.0 km²40.0% of basin
- 164.3 km²15.8% of basin
- 22.3 km²2.1% of basin
- 9.1 km²0.9% of basin
23 intersecting protected areas
State Forest
264.99 km² overlap
State Forest
136.67 km² overlap
Wildlife Habitat Management Area
50.51 km² overlap
Wildlife Habitat Management Area
42.47 km² overlap
Wildlife Habitat Management Area
23.27 km² overlap
Wildlife Habitat Management Area
21.09 km² overlap
Wildlife Habitat Management Area
17.73 km² overlap
State Forest
14.28 km² overlap
Natural Area
11.90 km² overlap
14 more protected areassorted by overlap area
Robinson Creek Flooding
IUCN VState Wildlife Management Area
10.41 km² overlap
Kirtlands Warbler
IUCN VWildlife Management Area
8.51 km² overlap
Forest
3.11 km² overlap
State Wildlife Management Area
2.24 km² overlap
Lake
1.89 km² overlap
Conservation Area
0.64 km² overlap
Jones
IUCN Not AssignedEasement
0.64 km² overlap
Marguerite Gahagan
IUCN Not AssignedNature Preserve
0.24 km² overlap
MNRTF Parcel
IUCN VConservation Area
0.16 km² overlap
Mires
IUCN Not AssignedEasement
0.08 km² overlap
01-72-0080
IUCN Not AssignedConservation Easement
0.06 km² overlap
14-72-0002
IUCN Not AssignedConservation Easement
0.05 km² overlap
Backus Creek State Game
IUCN VWildlife Habitat Management Area
0.01 km² overlap
01-65-0025
IUCN Not AssignedConservation Easement
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 678 distinct species · 94 983 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 South Branch Au Sable River : 21 espèces reliées par 79 interactions GloBI sur 4 types (connectance 12.5%, filtre Serrano α=0.2). 15 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°
5,8°C
Annual rain
764mm
Moisture idx (CMI)
-0,16
Runoff
214mm/an
PET
904mm
AET
643mm
Mean slope
1,2°
Water table
104cm
Forest
88%
Crops
0%
Urban
0%
Protected
13%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)