Ontologia

HydroBASINS lev08 watershed · #7080471710

Bassin de Niobrara 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 : Brown, Keya Paha, Rock

Pfafstetter: 74295653

Sub-basin area

268,6km²

Upstream area

23 272,1km²

Discharge

11,81m³/s

Mean elev.

698m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Niobrara River1016 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Thomas Creek

    IUCN V

    Wildlife Management Area

    4.60 km² overlap

  • Bobcat

    IUCN V

    Wildlife Management Area

    0.01 km² overlap

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

Species present

375 distinct species · 1 960 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 960 obs · 7 cellules
Obs. / cellule
≥ 946
946–945
258–945
165–257
< 165

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

Ecological tissue

Sample of 38 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 Niobrara River : 24 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 103 interactions GloBI sur 5 types (connectance 14.7%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
103
Connectance
0.146
Patrimoniales
3
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°

9,0°C

Annual rain

558mm

Moisture idx (CMI)

-0,48

Runoff

92mm/an

PET

1 078mm

AET

478mm

Mean slope

2,4°

Water table

297cm

Forest

10%

Crops

23%

Urban

0%

Protected

9%

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