HydroBASINS lev08 watershed · #7080016100
Bassin de No Name Slough
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 4 administrative regions : Island, San Juan, Skagit, Snohomish
Sub-basin area
794,3km²
Upstream area
794,3km²
Discharge
2,05m³/s
Mean elev.
54m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 445.3 km²55.9% of basin
- 249.3 km²31.3% of basin
- 1.9 km²0.2% of basin
- San Juan0.2 km²0.0% of basin
30 intersecting protected areas
Marine Protected Area
60.83 km² overlap
San Juan Islands
IUCN VNational Monument
37.70 km² overlap
Marine Protected Area
28.42 km² overlap
Cypress Island
IUCN VNatural Resources Conservation Area
16.11 km² overlap
Marine Protected Area
14.43 km² overlap
Marine Protected Area
11.13 km² overlap
Marine Protected Area
5.53 km² overlap
Reserve
4.42 km² overlap
Skagit-Snoqualmie
IUCN VWildlife Area Complex
4.15 km² overlap
21 more protected areassorted by overlap area
Cypress Highlands
IUCN VNatural Area Preserve
4.05 km² overlap
Marine Protected Area
3.87 km² overlap
Fort Casey Underwater Park
IUCN IVMarine Protected Area
2.40 km² overlap
Ebey's Landing
IUCN VPrivate Conservation Land
1.96 km² overlap
Fidalgo Bay Aquatic Reserve
IUCN IVMarine Protected Area
1.41 km² overlap
Deer Lagoon
IUCN VEnvironmental System
0.68 km² overlap
Hat Island
IUCN VNatural Resources Conservation Area
0.44 km² overlap
Us-Wa-44-23
IUCN Not AssignedConservation Easement
0.40 km² overlap
Reserve Program
0.31 km² overlap
Guemes Mountain
IUCN Not AssignedConservation Easement
0.29 km² overlap
Lake Hancock
IUCN VPrivate Conservation Land
0.21 km² overlap
Fidalgo Bay
IUCN Not AssignedConservation Easement
0.21 km² overlap
Admiralty Inlet NAP Addition
IUCN Not AssignedConservation Easement
0.19 km² overlap
Hoffman1
IUCN Not AssignedConservation Easement
0.17 km² overlap
Hoffman2
IUCN Not AssignedConservation Easement
0.16 km² overlap
San Juan Islands
IUCN IVNational Wildlife Refuge
0.15 km² overlap
Marine Protected Area
0.15 km² overlap
Ducken LLC - Easement A
IUCN Not AssignedEasement
0.13 km² overlap
Businger Sinclair
IUCN Not AssignedConservation Easement
0.08 km² overlap
Marine Protected Area
0.05 km² overlap
Keystone Conservation Area
IUCN IaMarine Protected Area
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 615 distinct species · 994 309 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de No Name Slough : 21 espèces reliées par 64 interactions GloBI sur 4 types (connectance 11.4%, filtre Serrano α=0.2). 13 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°
9,9°C
Annual rain
685mm
Moisture idx (CMI)
-0,11
Runoff
647mm/an
PET
768mm
AET
509mm
Mean slope
4,3°
Water table
292cm
Forest
83%
Crops
15%
Urban
5%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)