HydroBASINS lev08 watershed · #7080574380

Bassin de Steelhead 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 : Placer, Sacramento, Sutter

Pfafstetter: 77444002

Sub-basin area

651,6km²

Upstream area

651,6km²

Discharge

4,88m³/s

Mean elev.

55m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de American River6 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

Placer
California · United States
396.4 km²
60.8% of basin
Sacramento
California · United States
187.8 km²
28.8% of basin
Sutter
California · United States
67.9 km²
10.4% of basin

11 intersecting protected areas

Wetlands
IUCN V
Local Conservation Area
1.87 km² overlap
Traylor Ranch Bird Sanctuary and
IUCN V
Nature Reserve
0.35 km² overlap
Locust Road
IUCN Not Assigned
Road Mitigation
0.30 km² overlap
Toad Hill Ranch
IUCN V
Preserve
0.21 km² overlap
Wetlands Reserve Program (WRP), Sutter, CA
IUCN V
Reserve Program
0.19 km² overlap
Miners Ravine
IUCN V
Nature Reserve
0.10 km² overlap
Sierra Springs
IUCN Not Assigned
Conservation Easement
0.06 km² overlap
Dry Creek Watershed
IUCN V
Watershed
0.03 km² overlap
North Natomas Park
IUCN V
Nature Area
0.03 km² overlap

2 more protected areassorted by overlap area

Pacific Tech
IUCN Not Assigned
Park
0.01 km² overlap
Elsami
IUCN V
Private Conservation
0.00 km² overlap

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

Species present

2 116 distinct species · 435 919 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 35 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 Steelhead Creek : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 90 interactions GloBI sur 4 types (connectance 14.3%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.143

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°

16,3°C

Annual rain

541mm

Moisture idx (CMI)

-0,60

Runoff

216mm/an

PET

1 371mm

AET

455mm

Mean slope

0,9°

Water table

69cm

Forest

26%

Crops

22%

Urban

45%

Protected

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