Mcnary
IUCN IVNational Wildlife Refuge · 1956
64 km²
County · USA
Walla Walla
United States
BSkArid, steppe, cold(62 %)
Species observed
2 839
Observations
813 544
Area
3 345,8km²
Ecological tissue
Sample of 31 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 Walla Walla : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 70 interactions GloBI sur 3 types (connectance 15.1%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
31
Interactions affichées
70
Connectance
0.150
Patrimoniales
1
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
2 839 distinct species · 813 544 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
12,3°C
Annual rain
428mm
Warmest m°
31,8°C
Coldest m°
-2,2°C
Elevation: 366 m on average (min 102 m, max 1 355 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
12,3°C
Annual rain
428mm
Warmest month
31,8°C
Coldest month
-2,2°C
Mean alt.
366m
Min
102m
Max
1 355m
Std. dev.
193m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(62 %)Arid
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
7,0
Org. C
18,9g/kg
Clay
18,4%
Sand
30,4%
Silt
51,2%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: vbGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
7,0
Org. C
30,1g/kg
Clay
17,8%
Sand
30,9%
Silt
51,3%
5–15 cm
pH H₂O
7,0
Org. C
15,0g/kg
Clay
18,4%
Sand
30,4%
Silt
51,2%
15–30 cm
pH H₂O
7,1
Org. C
11,5g/kg
Clay
18,9%
Sand
30,1%
Silt
51,0%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest6.2%
Crops41.3%
Built-up0.3%
Bare soil4.7%
Other (grassland, water…)47.5%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology13 basins · 7 lakes · 22 rivers
Hydrology metrics for this exact territory
Stream length here
569,6km
Lake surface here
2,19km²
Basins crossed
13
Max stream order
8
Max drainage
536 221km²
Discharge in basins
4 497,3m³/s
Mean precip.
402mm/an
Mean T°
10,4°C
Moisture idx
-0,61
Max snow
23%
Mean runoff
74mm/an
Mean elev. (basins)
439m
Watersheds crossing here
- Bassin de Dry Creeksub-area2 323,9 km²overlap1123.38 km²34%
- Bassin de Snake Riversub-area1 871,7 km²overlap733.97 km²22%
- Bassin de Touchet Riversub-area322 km²overlap312.56 km²9%
- Bassin de Columbia Riversub-area488,6 km²overlap309.85 km²9%
- Bassin de Touchet Riversub-area262,8 km²overlap263.50 km²8%
- Bassin de Touchet Riversub-area373,4 km²overlap206.82 km²6%
- Bassin de Walla Walla Riversub-area295,7 km²overlap188.18 km²6%
- Bassin de Touchet Riversub-area128,8 km²overlap129.08 km²4%
- Basin #75780sub-area251,4 km²overlap44.29 km²1%
Lakes (7, top by area)
Rivers / streams (22, ord ≥ 4)
- Snake Riverord 7len here125.47 km4%total2867 km
- Touchet Riverord 5len here99.34 km82%total122 km
- Walla Walla Riverord 5len here83.69 km63%total133 km
- Dry Creekord 8len here83.64 km15%total553 km
- Titus Creekord 2len here29.42 km100%total29 km
- Columbia Riverord 8len here28.80 km1%total2971 km
- Blue Creekord 2len here16.26 km25%total64 km
- South Fork Coppei Creekord 2len here15.97 km100%total16 km
- Russell Creekord 2len here14.31 km56%total26 km
- Mill Creekord 5len here13.33 km3%total446 km
- South Fork Dry Creekord 2len here12.75 km100%total13 km
- North Fork Cottonwood Creekord 2len here8.54 km52%total17 km
10 more river segmentssorted by Strahler order + length
- Yellowhawk Creekord 4len here7.72 km100%total8 km
- Coppei Creekord 2len here6.76 km100%total7 km
- North Fork Coppei Creekord 1len here4.71 km100%total5 km
- Garrison Creekord 4len here3.87 km100%total4 km
- Mud Creekord 2len here3.52 km8%total46 km
- North Fork Dry Creekord 1len here3.22 km100%total3 km
- Spring Creekord 6len here3.06 km1%total267 km
- Reser Creekord 1len here2.66 km100%total3 km
- West Prong Little Walla Walla Riverord 1len here1.31 km100%total1 km
- Paradise Creekord 4len here1.26 km2%total72 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,5nW
Built-up
27,0%
Pesticides
46,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas12
IUCN Not Assigned · 10IUCN IV · 1IUCN V · 1
Sunnyside-Snake River
IUCN VWildlife Area Complex
52 km²
Ford
IUCN Not AssignedConservation Easement · 2011
1 km²
Simons
IUCN Not AssignedConservation Easement · 2011
0 km²
McCaw
IUCN Not AssignedConservation Easement · 2009
0 km²
Hughes
IUCN Not AssignedConservation Easement · 2006
0 km²
Complete list12 protected areas
- McnaryNational Wildlife RefugeIUCN IV195664 km²
- Sunnyside-Snake RiverWildlife Area ComplexIUCN V52 km²
- FordConservation EasementIUCN Not Assigned20111 km²
- SimonsConservation EasementIUCN Not Assigned20110 km²
- McCawConservation EasementIUCN Not Assigned20090 km²
- HughesConservation EasementIUCN Not Assigned20060 km²
- CarpenterConservation EasementIUCN Not Assigned20090 km²
- Schmitt 1Conservation EasementIUCN Not Assigned20000 km²
- Schmitt 2Conservation EasementIUCN Not Assigned20010 km²
- BrewerWetlandIUCN Not Assigned20090 km²
- LasherConservation EasementIUCN Not Assigned20090 km²
- KarlConservation EasementIUCN Not Assigned20080 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN