Saint Croix
IUCN VNational Scenic Riverway · 1968
70 km²
County · USA
Sawyer
United States
DfbCold, no dry season, warm summer(100 %)
Species observed
2 534
Observations
157 791
Area
3 494,5km²
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 Sawyer : 32 espèces reliées par 74 interactions GloBI sur 4 types (connectance 8.6%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
42
Interactions affichées
74
Connectance
0.086
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
2 534 distinct species · 157 791 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
5,5°C
Annual rain
878mm
Warmest m°
25,3°C
Coldest m°
-14,9°C
Elevation: 416 m on average (min 351 m, max 531 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
5,5°C
Annual rain
878mm
Warmest month
25,3°C
Coldest month
-14,9°C
Mean alt.
416m
Min
351m
Max
531m
Std. dev.
27m
Köppen-Geiger (dominant)
DfbCold, no dry season, warm summer(100 %)Cold
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,1
Org. C
33,9g/kg
Clay
10,9%
Sand
45,5%
Silt
43,6%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: mtGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,0
Org. C
54,0g/kg
Clay
12,0%
Sand
44,4%
Silt
43,7%
5–15 cm
pH H₂O
5,1
Org. C
31,9g/kg
Clay
11,0%
Sand
45,2%
Silt
43,8%
15–30 cm
pH H₂O
5,1
Org. C
15,9g/kg
Clay
9,7%
Sand
46,9%
Silt
43,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest77.6%
Crops2.2%
Built-up0.1%
Bare soil0.5%
Other (grassland, water…)19.5%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology14 basins · 50 lakes · 47 rivers
Hydrology metrics for this exact territory
Stream length here
623,1km
Lake surface here
190,06km²
Basins crossed
14
Max stream order
5
Max drainage
4 862km²
Discharge in basins
127,0m³/s
Mean precip.
819mm/an
Mean T°
4,4°C
Moisture idx
-0,06
Max snow
30%
Mean runoff
363mm/an
Mean elev. (basins)
417m
Watersheds crossing here
- Bassin de West Fork Chippewa Riversub-area1 207,7 km²overlap840.93 km²24%
- Bassin de Couderay Riversub-area537,9 km²overlap538.31 km²15%
- Bassin de Namekagon Riversub-area2 718,3 km²overlap388.64 km²11%
- Bassin de Thornapple Riversub-area546,3 km²overlap341.96 km²10%
- Bassin de Flambeau Riversub-area400,9 km²overlap277.95 km²8%
- Bassin de Brunet Riversub-area276,9 km²overlap277.59 km²8%
- Bassin de Red Cedar Riversub-area459,8 km²overlap166.89 km²5%
- Bassin de Chippewa Riversub-area162,9 km²overlap163.34 km²5%
- Bassin de East Fork Chippewa Riversub-area801,1 km²overlap147.22 km²4%
5 more basinssorted by overlap
- Bassin de Chippewa Riversub-area437,6 km²overlap136.11 km²4%
- Bassin de Chippewa Riversub-area123,2 km²overlap123.47 km²4%
- Bassin de South Fork Flambeau Riversub-area1 924,3 km²overlap73.07 km²2%
- Bassin de Flambeau Riversub-area395,9 km²overlap18.19 km²1%
- Bassin de Brill Riversub-area282,5 km²overlap0.89 km²0%
Lakes (50, top by area)
- Winterarea55,9 km²avg depth5.1 m
- Lac Courte Oreillesarea20,7 km²avg depth11.6 m
- Little Round Lakearea13,5 km²avg depth9.1 m
- Grindstone Lakearea12,3 km²avg depth10.3 m
- Nelson Lakearea10,5 km²avg depth4.5 m
- Lake Chetacarea9,1 km²avg depth8.9 m
- Goodricharea6 km²avg depth5.6 m
- Clear Lakearea5,6 km²avg depth5.7 m
- Lost Land Lakearea4,9 km²avg depth6.1 m
41 more lakes
- Teal Lakearea3,9 km²avg depth5.8 m
- Sand Lakearea3,7 km²avg depth5.1 m
- Sissabagama Lakearea3,1 km²avg depth4.7 m
- Whitefish Lakearea3 km²avg depth5.7 m
- Lake Winterarea2,5 km²avg depth5.0 m
- Callahan Lakearea2,3 km²avg depth5.3 m
- McClaine Lakearea1,9 km²avg depth4.7 m
- Windigo Lakearea1,9 km²avg depth3.9 m
- Deer Lakearea1,7 km²avg depth8.1 m
- Connors Lakearea1,6 km²avg depth4.6 m
- Blaisdell Lakearea1,4 km²avg depth4.3 m
- Fishtrap Lakearea1,4 km²avg depth3.9 m
- McClaine Lakearea1,4 km²avg depth6.3 m
- Ghost Lakearea1,3 km²avg depth5.5 m
- Birchwoodarea1,1 km²avg depth25.2 m
- Smith Lakearea1,1 km²avg depth5.7 m
- Totagatic Flowagearea1,1 km²avg depth1.4 m
- Little Sissabagama Lakearea1,1 km²avg depth4.5 m
- Blueberry Lakearea1 km²avg depth3.7 m
- Lake of the Pinesarea1 km²avg depth4.1 m
- Lac 1034568area1 km²avg depth4.3 m
- Lac 1031836area0,9 km²avg depth5.5 m
- Lac 1033448area0,9 km²avg depth3.4 m
- Lac 1032256area0,9 km²avg depth2.8 m
- Lac 1030874area0,8 km²avg depth5.2 m
- Lac 1033374area0,8 km²avg depth4.7 m
- Lac 1034356area0,8 km²avg depth4.1 m
- Lac 1034375area0,8 km²avg depth4.2 m
- Lac 1032716area0,7 km²avg depth5.2 m
- Lac 1032116area0,7 km²avg depth4.2 m
- Lac 1034907area0,7 km²avg depth3.0 m
- Lac 1034196area0,7 km²avg depth5.7 m
- Lac 1032667area0,6 km²avg depth4.7 m
- Lac 1031960area0,6 km²avg depth4.7 m
- Lac 1033552area0,5 km²avg depth3.4 m
- Lac 1030650area0,5 km²avg depth4.1 m
- Lac 1030946area0,5 km²avg depth3.6 m
- Lac 1033661area0,5 km²avg depth4.0 m
- Lac 1032599area0,5 km²avg depth4.0 m
- Lac 1031052area0,5 km²avg depth3.5 m
- Lac 1033544area0,5 km²avg depth4.0 m
Rivers / streams (47, ord ≥ 4)
- Chippewa Riverord 6len here77.49 km12%total654 km
- Thornapple Riverord 3len here57.54 km63%total92 km
- Couderay Riverord 3len here52.15 km100%total52 km
- Flambeau Riverord 5len here42.37 km18%total237 km
- West Fork Chippewa Riverord 3len here41.82 km75%total56 km
- North Fork Chief Riverord 4len here39.90 km100%total40 km
- East Fork Chippewa Riverord 3len here28.40 km17%total169 km
- Totagatic Riverord 3len here22.03 km18%total119 km
- Sissabagama Creekord 1len here18.95 km100%total19 km
- Log Creekord 2len here14.18 km72%total20 km
- Mosquito Brookord 1len here14.12 km100%total14 km
- West Fork Chippewa River / Anishinaabe-ziibiiord 4len here13.45 km100%total13 km
35 more river segmentssorted by Strahler order + length
- Tupper Creekord 3len here13.35 km68%total20 km
- Moose Riverord 2len here12.40 km15%total85 km
- McDermott Brookord 3len here11.83 km100%total12 km
- Namekagon Riverord 4len here11.69 km10%total120 km
- Little Moose Riverord 1len here10.98 km100%total11 km
- Venison Creekord 1len here10.10 km100%total10 km
- Hay Creekord 4len here9.57 km2%total454 km
- Brunet Riverord 2len here9.25 km100%total9 km
- Pine Creekord 4len here8.86 km2%total522 km
- Smith Lake Creekord 2len here7.74 km40%total19 km
- Yankee Joe Creekord 1len here7.67 km100%total8 km
- Price Creekord 6len here7.30 km13%total56 km
- Fishtrap Creekord 4len here7.27 km42%total17 km
- Ghost Creekord 2len here6.95 km100%total7 km
- Spring Lake Creekord 1len here6.47 km100%total6 km
- Hatchery Creekord 3len here6.11 km100%total6 km
- North Fork Skinner Creekord 1len here5.58 km32%total17 km
- Connors Creekord 1len here5.26 km28%total19 km
- Bradley Branchord 5len here5.06 km44%total11 km
- Grindstone Creekord 3len here4.86 km9%total54 km
- Deer Creekord 6len here4.52 km0%total1337 km
- Hackett Creekord 1len here3.92 km33%total12 km
- Bull Creekord 4len here3.91 km1%total362 km
- Whitefish Creekord 4len here3.39 km14%total24 km
- South Fork Flambeau Riverord 4len here2.99 km3%total92 km
- Dry Creekord 8len here2.63 km0%total1337 km
- Cold Brookord 3len here2.54 km16%total16 km
- Stony Brookord 4len here2.02 km2%total96 km
- Torch Riverord 2len here1.72 km28%total6 km
- Williamson Creekord 3len here1.62 km5%total32 km
- Flyblow Creekord 1len here1.17 km100%total1 km
- Red Cedar Riverord 5len here0.95 km1%total189 km
- Long Creekord 8len here0.69 km0%total439 km
- Rock Creekord 8len here0.28 km0%total2074 km
- Bean Brookord 1len here0.01 km0%total14 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,2nW
Built-up
10,4%
Pesticides
3,4kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas22
IUCN V · 12IUCN Not Assigned · 7IUCN Ia · 2IUCN VI · 1
Scenic
IUCN Not AssignedEasement
42 km²
Statewide Habitat Areas
IUCN VHabitat Area
29 km²
Chippewa Flowage
IUCN Not AssignedConservation Easement · 1988
27 km²
Statewide Natural Area 69
IUCN VNatural Area
21 km²
St. Croix
IUCN VNational Scenic Riverway
21 km²
Complete list22 protected areas
- Saint CroixNational Scenic RiverwayIUCN V196870 km²
- ScenicEasementIUCN Not Assigned42 km²
- Statewide Habitat AreasHabitat AreaIUCN V29 km²
- Chippewa FlowageConservation EasementIUCN Not Assigned198827 km²
- Statewide Natural Area 69Natural AreaIUCN V21 km²
- St. CroixNational Scenic RiverwayIUCN V21 km²
- Peters MarshWildlife AreaIUCN V16 km²
- TotagaticWildlife AreaIUCN V11 km²
- Weirgor SpringsWildlife AreaIUCN V8 km²
- Chief RiverWildlife AreaIUCN V5 km²
- Wilson LakeResearch Natural AreaIUCN Ia20155 km²
- SilvernailWildlife AreaIUCN V4 km²
- Totagatic LakeWildlife AreaIUCN V4 km²
- Kissick SwampWildlife AreaIUCN V4 km²
- Saint CroixNational Scenic RiverwayIUCN VI2 km²
- Flat CreekWildlife AreaIUCN V2 km²
- Lewis LakeEasementIUCN Not Assigned20011 km²
- No-Name LakeResearch Natural AreaIUCN Ia20151 km²
- Teal LakeEasementIUCN Not Assigned20010 km²
- Rem-Maple CreekConservation EasementIUCN Not Assigned19670 km²
- Rem-Mcdermott CreekConservation EasementIUCN Not Assigned19830 km²
- Kissick SwampWildlife AreaIUCN Not Assigned19840 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN