Ontologia

HydroBASINS lev08 watershed · #7080383420

Bassin de Dry 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 5 administrative regions : Columbia, Umatilla, Union, Walla Walla, Wallowa

Pfafstetter: 78250802

Sub-basin area

2 323,9km²

Upstream area

2 323,9km²

Discharge

9,12m³/s

Mean elev.

618m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Walla Walla River296 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

8 intersecting protected areas

  • Wenaha-Tucannon

    IUCN Ib

    Wilderness

    0.98 km² overlap

  • Sunnyside-Snake River

    IUCN V

    Wildlife Area Complex

    0.85 km² overlap

  • Simons

    IUCN Not Assigned

    Conservation Easement

    0.49 km² overlap

  • Schmitt 1

    IUCN Not Assigned

    Conservation Easement

    0.12 km² overlap

  • Schmitt 2

    IUCN Not Assigned

    Conservation Easement

    0.10 km² overlap

  • Brewer

    IUCN Not Assigned

    Wetland

    0.09 km² overlap

  • Lasher

    IUCN Not Assigned

    Conservation Easement

    0.09 km² overlap

  • Wenaha-Tucannon

    IUCN Ib

    Wilderness

    0.05 km² overlap

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

Species present

2 700 distinct species · 426 530 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

426 530 obs · 69 cellules
Obs. / cellule
≥ 91 770
11 054–91 769
1 616–11 053
511–1 615
< 511

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

Ecological tissue

Sample of 31 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 Dry Creek : 20 espèces reliées par 64 interactions GloBI sur 4 types (connectance 13.8%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
64
Connectance
0.138
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°

9,5°C

Annual rain

537mm

Moisture idx (CMI)

-0,46

Runoff

119mm/an

PET

1 033mm

AET

425mm

Mean slope

8,3°

Water table

837cm

Forest

39%

Crops

58%

Urban

2%

Protected

0%

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