Ontologia

HydroBASINS lev08 watershed · #7080495940

Bassin de Little Sioux 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 2 administrative regions : Harrison, Monona

Pfafstetter: 74295161

Sub-basin area

225,8km²

Upstream area

11 459,7km²

Discharge

61,3m³/s

Mean elev.

326m

Administrative coverage

Hydrographic chain

Drains into

Receives from 2 basins

2 dept-equivalent regions (GADM L2)

4 intersecting protected areas

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

Species present

163 distinct species · 773 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

773 obs · 6 cellules
Obs. / cellule
≥ 331
331–330
219–330
84–218
< 84

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

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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Little Sioux River : 28 espèces reliées par 91 interactions GloBI sur 5 types (connectance 11.1%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
41
Interactions affichées
91
Connectance
0.111
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°

9,7°C

Annual rain

746mm

Moisture idx (CMI)

-0,30

Runoff

157mm/an

PET

1 064mm

AET

635mm

Mean slope

1,3°

Water table

85cm

Forest

22%

Crops

66%

Urban

0%

Protected

0%

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