HydroBASINS lev08 watershed · #7080508790

Bassin de Bear 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 : Box Elder, Cache, Weber

Endorheic 483% lakePfafstetter: 77381930

Sub-basin area

964,6km²

Upstream area

19 180,3km²

Discharge

45,22m³/s

Mean elev.

1 435m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin · #7080511050103 km²

▲ Receives from 2 basins

Bassin de Malad River1823 km²
Bassin de Bear River458 km²

3 dept-equivalent regions (GADM L2)

Box Elder
Utah · United States
799.6 km²
82.8% of basin
Weber
Utah · United States
154.6 km²
16.0% of basin
Cache
Utah · United States
11.7 km²
1.2% of basin

12 intersecting protected areas

Bear River Migratory
IUCN IV
Bird Refuge
151.27 km² overlap
Wellsville Mountain
IUCN Ib
Wilderness
27.39 km² overlap
Harold Crane
IUCN V
State Wildlife Area
15.18 km² overlap
Utah State Department of Wildlife Resources 476
IUCN V
State Wildlife Reserve/Management Area
13.58 km² overlap
Selman Ranch Conservation Project
IUCN Not Assigned
Conservation Easement
5.82 km² overlap
Utah State Department of Wildlife Resources 474
IUCN V
State Wildlife Reserve/Management Area
2.32 km² overlap
Brigham Face
IUCN V
State Wildlife Area
1.18 km² overlap
Utah State Department of Wildlife Resources 188
IUCN V
State Wildlife Reserve/Management Area
0.75 km² overlap
Utah State Department of Wildlife Resources 473
IUCN V
State Wildlife Reserve/Management Area
0.66 km² overlap

3 more protected areassorted by overlap area

Utah State Department of Wildlife Resources 479
IUCN V
State Wildlife Reserve/Management Area
0.44 km² overlap
Utah State Department of Wildlife Resources 475
IUCN V
State Wildlife Reserve/Management Area
0.18 km² overlap
Utah State Department of Wildlife Resources 189
IUCN V
State Wildlife Reserve/Management Area
0.02 km² overlap

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

Species present

1 889 distinct species · 281 237 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 32 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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Bear River : 23 espèces reliées par 85 interactions GloBI sur 4 types (connectance 17.1%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.171

Patrimoniales

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°

8,8°C

Annual rain

473mm

Moisture idx (CMI)

-0,57

Runoff

150mm/an

PET

1 110mm

AET

402mm

Mean slope

4,5°

Water table

168cm

Forest

22%

Crops

13%

Urban

Protected

20%

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