HydroBASINS lev08 watershed · #7080408060
Bassin de Saint Croix 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 across 2 countries : Charlotte, Washington
Sub-basin area
393,1km²
Upstream area
3 787,9km²
Discharge
71,89m³/s
Mean elev.
68m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Tomah Stream1771 km²
- Bassin de Saint Croix River161 km²
2 dept-equivalent regions (GADM L2)
- Washington212.8 km²54.0% of basin
- 180.9 km²45.9% of basin
8 intersecting protected areas
Moosehorn
IUCN IVNational Wildlife Refuge
33.38 km² overlap
Marine Protected Area
33.37 km² overlap
4001800
IUCN IINature Legacy protected area
5.19 km² overlap
Baring
IUCN IbWilderness Area
4.39 km² overlap
4042400
IUCN IINature Legacy protected area
2.11 km² overlap
Beausoleil
IUCN IbNature Preserve
0.72 km² overlap
4042300
IUCN IINature Legacy protected area
0.26 km² overlap
St. Croix River
IUCN VPCL
0.12 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 639 distinct species · 45 716 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Saint Croix River : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 60 interactions GloBI sur 4 types (connectance 10.1%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
5,9°C
Annual rain
1 126mm
Moisture idx (CMI)
0,27
Runoff
702mm/an
PET
824mm
AET
669mm
Mean slope
2,2°
Water table
129cm
Forest
92%
Crops
2%
Urban
2%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)