HydroBASINS lev08 watershed · #7080597550
Bassin de Merced 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 4 administrative regions : Madera, Mariposa, Mono, Tuolumne
Sub-basin area
1 080km²
Upstream area
1 080km²
Discharge
13,84m³/s
Mean elev.
2 365m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 889.4 km²82.3% of basin
- 181.4 km²16.8% of basin
- 9.3 km²0.9% of basin
- 0.4 km²0.0% of basin
7 intersecting protected areas
Yosemite National Park
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
991.88 km² overlap
Yosemite
IUCN IINational Park
982.65 km² overlap
Yosemite
IUCN IbWilderness Area
901.63 km² overlap
Merced, California
IUCN VWild and Scenic River
6.31 km² overlap
Ansel Adams
IUCN IbWilderness Area
1.92 km² overlap
Sparling Property
IUCN VPrivate Conservation
1.89 km² overlap
Donahoe Property
IUCN VPrivate Conservation
1.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 927 distinct species · 241 162 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 44 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 Merced River : 34 espèces reliées par 98 interactions GloBI sur 5 types (connectance 10.4%, filtre Serrano α=0.2). 10 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°
5,2°C
Annual rain
849mm
Moisture idx (CMI)
-0,05
Runoff
401mm/an
PET
911mm
AET
538mm
Mean slope
15,8°
Water table
623cm
Forest
88%
Crops
0%
Urban
0%
Protected
93%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)