HydroBASINS lev08 watershed · #7080385720

Bassin de North Fork Grand 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 : Adams, Bowman, Harding, Perkins

4% lakePfafstetter: 74297467

Sub-basin area

317,8km²

Upstream area

1 592,2km²

Discharge

2,78m³/s

Mean elev.

852m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de North Fork Grand River34 km²

▲ Receives from 2 basins

Bassin de Spring Creek645 km²
Bassin de North Fork Grand River630 km²

4 dept-equivalent regions (GADM L2)

Harding
South Dakota · United States
190.7 km²
59.8% of basin
Bowman
North Dakota · United States
113.4 km²
35.6% of basin
Adams
North Dakota · United States
9.4 km²
3.0% of basin
Perkins
South Dakota · United States
5.2 km²
1.6% of basin

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

142 distinct species · 497 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 35 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de North Fork Grand River : 23 espèces reliées par 133 interactions GloBI sur 4 types (connectance 18.9%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

133

Connectance

0.189

Patrimoniales

Plus dense que (national)0 %(top 100%)

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

406mm

Moisture idx (CMI)

-0,59

Runoff

68mm/an

PET

994mm

AET

354mm

Mean slope

1,7°

Water table

300cm

Forest

Crops

50%

Urban

Protected

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)