HydroBASINS lev08 watershed · #7080338040
Bassin de Gratiot 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 : Houghton, Keweenaw, Lake Superior
Sub-basin area
592,3km²
Upstream area
592,3km²
Discharge
14,52m³/s
Mean elev.
199m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 487.0 km²82.0% of basin
- 88.4 km²14.9% of basin
- 18.6 km²3.1% of basin
7 intersecting protected areas
Marine Protected Area
45.18 km² overlap
Baraga State Forest Area
IUCN VState Forest
1.25 km² overlap
Black Creek
IUCN VNature Preserve
0.95 km² overlap
Gratiot River North
IUCN VNature Preserve
0.94 km² overlap
Dore Woods
IUCN VNature Preserve
0.32 km² overlap
Conglomerate Falls
IUCN VPreserve
0.16 km² overlap
Seven Mile Point
IUCN VNature Preserve
0.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
828 distinct species · 27 385 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Gratiot River : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 64 interactions GloBI sur 4 types (connectance 12.1%, filtre Serrano α=0.2). 12 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°
4,0°C
Annual rain
794mm
Moisture idx (CMI)
0,05
Runoff
777mm/an
PET
755mm
AET
571mm
Mean slope
0,4°
Water table
17cm
Forest
18%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)