HydroBASINS lev08 watershed · #2080297450
Bassin de Аржать
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 : Bel'skiy rayon, Dukhovshchinskiy rayon, Kholm-Zhirkovskiy rayon, Zharkovskiy rayon
Sub-basin area
856,4km²
Upstream area
856,4km²
Discharge
6,77m³/s
Mean elev.
203m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Dukhovshchinskiy rayonSmolensk · Russia375.4 km²43.6% of basin
- Zharkovskiy rayonTver' · Russia363.8 km²42.3% of basin
- Bel'skiy rayonTver' · Russia116.6 km²13.5% of basin
- Kholm-Zhirkovskiy rayonSmolensk · Russia4.6 km²0.5% of basin
13 intersecting protected areas
Torfyanik Grublevatskoe
IUCN IIINatural Monument
10.42 km² overlap
Boloto Sosenskij Moh
IUCN IVState Natural Zakaznik
10.00 km² overlap
Boloto Budnickij Moh
IUCN IVState Natural Zakaznik
9.45 km² overlap
Boloto Kozlovskij Moh
IUCN IVState Natural Zakaznik
5.76 km² overlap
Smolemsk Lakeland
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
5.19 km² overlap
Boloto Emel`yanovskij Moh
IUCN IVState Natural Zakaznik
5.15 km² overlap
State Natural Zakaznik
1.67 km² overlap
Boloto Klemyatinskij Moh
IUCN IVState Natural Zakaznik
1.12 km² overlap
Ozero CHichatskoe
IUCN IIINatural Monument
0.87 km² overlap
4 more protected areassorted by overlap area
Natural Monument
0.66 km² overlap
Ozero Tumerto
IUCN IIINatural Monument
0.39 km² overlap
Ozero Ol`shanec
IUCN IIINatural Monument
0.29 km² overlap
ZHarkovskij
IUCN IVState Natural Zakaznik
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
370 distinct species · 691 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 Bassin de Аржать : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 70 interactions GloBI sur 5 types (connectance 9.4%, filtre Serrano α=0.2). 8 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°
4,5°C
Annual rain
642mm
Moisture idx (CMI)
0,00
Runoff
250mm/an
PET
640mm
AET
490mm
Mean slope
0,9°
Water table
72cm
Forest
70%
Crops
12%
Urban
0%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)