National Volcanic Monument · usa
Mount St. Helens
- Area
- 458 km²
- IUCN cat.
- V
- Year
- 1982
Overview
- Designation
- National Volcanic Monument
- IUCN category
- V · Paysage protégé
Paysage façonné par l'humain digne de conservation
- Established
- 1982
- Managing authority
- Forest Service
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
1 220 distinct species · 14 601 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Mount St. Helens : 34 espèces + 5 bulles famille, 32 interactions GloBI documentées sur 3 types (connectance 4.3%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology5 basins · 5 lakes · 27 rivers
Hydrology metrics for this exact territory
Stream length here
171,8km
Lake surface here
10,32km²
Basins crossed
5
Max stream order
3
Max drainage
3 032km²
Discharge in basins
29,5m³/s
Mean precip.
2 274mm/an
Mean T°
8,0°C
Moisture idx
0,61
Max snow
37%
Mean runoff
1 444mm/an
Mean elev. (basins)
660m
Watersheds crossing here
- Bassin de South Fork Toutle Riversub-area1 313,5 km²overlap263.12 km²57%
- Bassin de Lewis Riversub-area2 713 km²overlap136.61 km²30%
- Bassin de Kalama Riversub-area533,9 km²overlap32.19 km²7%
- Bassin de Cowlitz Riversub-area388,7 km²overlap24.53 km²5%
- Bassin de Cispus Riversub-area1 122,9 km²overlap1.69 km²0%
Lakes (5, top by area)
Rivers / streams (27, ord ≥ 4)
- North Fork Toutle Riverord 4len here28.08 km45%total62 km
- Coldwater Creekord 3len here16.15 km100%total16 km
- Green Riverord 3len here12.21 km21%total58 km
- Smith Creekord 5len here11.09 km7%total169 km
- Goat Creekord 4len here8.40 km7%total119 km
- Castle Creekord 3len here8.18 km30%total28 km
- Muddy Riverord 4len here8.05 km30%total27 km
- South Coldwater Creekord 1len here7.54 km100%total8 km
- Cougar Creekord 3len here7.11 km6%total119 km
- Lewis Riverord 5len here6.89 km3%total229 km
- Miners Creekord 2len here6.62 km64%total10 km
- Kalama Riverord 8len here6.35 km7%total89 km
15 more river segmentssorted by Strahler order + length
- South Fork Toutle Riverord 3len here5.69 km6%total95 km
- Pine Creekord 6len here5.20 km1%total450 km
- Coldspring Creekord 1len here4.41 km53%total8 km
- Lost Creekord 4len here3.89 km2%total172 km
- Ape Canyon Creekord 1len here3.86 km100%total4 km
- Step Creekord 1len here3.67 km100%total4 km
- West Fork Swift Creekord 2len here3.04 km9%total36 km
- Bear Creekord 5len here2.99 km1%total575 km
- Glacier Creekord 3len here2.80 km3%total92 km
- Loowit Creekord 1len here2.51 km100%total3 km
- Maratta Creekord 1len here1.87 km100%total2 km
- Jackson Creekord 2len here1.75 km3%total57 km
- Grizzly Creekord 3len here1.49 km3%total52 km
- Swift Creekord 3len here1.31 km2%total76 km
- Clearwater Creekord 3len here0.67 km1%total65 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 46.25367, -122.18699
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.