HydroBASINS lev08 watershed · #7080387780
Bassin de Twelvemile 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 3 administrative regions : Big Stone, Stevens, Traverse
Sub-basin area
1 125km²
Upstream area
1 125km²
Discharge
3,4m³/s
Mean elev.
332m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 501.0 km²44.4% of basin
- Stevens342.3 km²30.4% of basin
- 284.3 km²25.2% of basin
25 intersecting protected areas
Reserve Program
14.85 km² overlap
Big Stone County
IUCN VIWaterfowl Production Area
7.24 km² overlap
Stevens County
IUCN VIWaterfowl Production Area
5.72 km² overlap
Reserve Program
2.52 km² overlap
Martin County
IUCN VWaterfowl Production Area
1.85 km² overlap
Traverse County
IUCN VIWaterfowl Production Area
1.67 km² overlap
Miller Prairie Fee
IUCN VPrivate Conservation Land
1.54 km² overlap
Eldorado
IUCN VState Wildlife Management Area
1.13 km² overlap
Taffe
IUCN VState Wildlife Management Area
0.96 km² overlap
16 more protected areassorted by overlap area
Skoog
IUCN VState Wildlife Management Area
0.76 km² overlap
John A. Scharf Memorial
IUCN VState Wildlife Management Area
0.73 km² overlap
Easement
0.67 km² overlap
Reserve Program
0.57 km² overlap
Cin
IUCN VState Wildlife Management Area
0.53 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Big Stone, MN
IUCN VConservation Easement
0.47 km² overlap
Pope County
IUCN VWaterfowl Production Area
0.46 km² overlap
Everglade Marshes
IUCN VState Wildlife Management Area
0.41 km² overlap
Horning Pit
IUCN VState Wildlife Management Area
0.36 km² overlap
Natural Area
0.29 km² overlap
West Toqua
IUCN VState Wildlife Management Area
0.22 km² overlap
Reserve Program
0.20 km² overlap
Reserve Program
0.20 km² overlap
Big Stone County
IUCN VWaterfowl Production Area
0.19 km² overlap
Wetlands Reserve Program (WRP)
IUCN Not AssignedReserve Program
0.11 km² overlap
Kline
IUCN VState Wildlife Management Area
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
526 distinct species · 18 839 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 Twelvemile Creek : 22 espèces reliées par 60 interactions GloBI sur 3 types (connectance 13.8%, filtre Serrano α=0.2). 8 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°
6,1°C
Annual rain
571mm
Moisture idx (CMI)
-0,39
Runoff
95mm/an
PET
931mm
AET
490mm
Mean slope
0,1°
Water table
8cm
Forest
41%
Crops
81%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)