Ontologia

HydroBASINS lev08 watershed · #4080888030

Bassin de Hel 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 across 2 countries : Dhubri, Kokrajhar, Nichula, Patshaling, Senggey

Pfafstetter: 45255024

Sub-basin area

1 524,1km²

Upstream area

1 524,2km²

Discharge

58,82m³/s

Mean elev.

126m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Tipkai River94 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

401 distinct species · 4 075 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 075 obs · 33 cellules
Obs. / cellule
≥ 1 211
388–1 210
63–387
25–62
< 25

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 24 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

Indicateurs du tissu écologique

Tissu écologique de Bassin de Hel River : 23 espèces reliées par 15 interactions GloBI sur 3 types (connectance 5.4%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
15
Connectance
0.054
Patrimoniales
0
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°

23,8°C

Annual rain

3 519mm

Moisture idx (CMI)

0,61

Runoff

1 216mm/an

PET

1 354mm

AET

1 101mm

Mean slope

2,3°

Water table

88cm

Forest

12%

Crops

35%

Urban

2%

Protected

11%

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