Ontologia

HydroBASINS lev08 watershed · #7080460520

Bassin de Mill Creek

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 : Grant, Iowa, Richland

Pfafstetter: 74287433

Sub-basin area

482,3km²

Upstream area

27 634,4km²

Discharge

256,85m³/s

Mean elev.

282m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Knapp Creek746 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

4 intersecting protected areas

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

Species present

1 719 distinct species · 49 921 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

49 921 obs · 13 cellules
Obs. / cellule
≥ 21 372
9 587–21 371
2 460–9 586
1 228–2 459
< 1 228

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

Ecological tissue

Sample of 41 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 Mill Creek : 33 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 88 interactions GloBI sur 4 types (connectance 10.7%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
41
Interactions affichées
88
Connectance
0.107
Patrimoniales
1
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°

7,3°C

Annual rain

832mm

Moisture idx (CMI)

-0,13

Runoff

264mm/an

PET

962mm

AET

703mm

Mean slope

5,4°

Water table

236cm

Forest

80%

Crops

40%

Urban

0%

Protected

0%

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