HydroBASINS lev08 watershed · #7080405260
Bassin de North Fork Whetstone 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 4 administrative regions : Big Stone, Codington, Grant, Roberts
Sub-basin area
1 040,7km²
Upstream area
1 040,7km²
Discharge
3,16m³/s
Mean elev.
421m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Grant660.9 km²63.4% of basin
- 379.5 km²36.4% of basin
- 2.4 km²0.2% of basin
- 0.4 km²0.0% of basin
20 intersecting protected areas
Grant County
IUCN VWaterfowl Production Area
104.36 km² overlap
Roberts County
IUCN VWaterfowl Production Area
45.42 km² overlap
Roberts County
IUCN VWaterfowl Production Area
7.05 km² overlap
State Wildlife Management Area
2.98 km² overlap
Summit
IUCN VLake
2.91 km² overlap
Mazzeppa
IUCN VState Wildlife Management Area
1.60 km² overlap
Summit
IUCN VState Wildlife Management Area
1.35 km² overlap
Codington County
IUCN VWaterfowl Production Area
1.15 km² overlap
Reserve Program
0.81 km² overlap
11 more protected areassorted by overlap area
Roberts County
IUCN VWaterfowl Production Area
0.64 km² overlap
Mud
IUCN VLake
0.62 km² overlap
Osterloh
IUCN VState Wildlife Management Area
0.36 km² overlap
Holtquist Slough
IUCN VState Wildlife Management Area
0.30 km² overlap
Roberts County
IUCN VWaterfowl Production Area
0.25 km² overlap
Reserve Program
0.24 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Roberts, SD
IUCN VConservation Easement
0.23 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Roberts, SD
IUCN VConservation Easement
0.22 km² overlap
Hunter Granite
IUCN VState Wildlife Management Area
0.04 km² overlap
Eye
IUCN VRefuge
0.04 km² overlap
Reserve Program
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
752 distinct species · 7 433 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 North Fork Whetstone River : 30 espèces reliées par 84 interactions GloBI sur 4 types (connectance 10.8%, 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°
6,2°C
Annual rain
557mm
Moisture idx (CMI)
-0,41
Runoff
84mm/an
PET
947mm
AET
478mm
Mean slope
0,8°
Water table
26cm
Forest
2%
Crops
62%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)