HydroBASINS lev08 watershed · #2080311230
Bassin de Цна
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 5 administrative regions : Egor'evskiy rayon, Kolomenskiy rayon, Lukhovitskiy rayon, Orekhovo-Zuevskiy rayon, Shaturskiy rayon
Sub-basin area
1 239,6km²
Upstream area
1 239,7km²
Discharge
6,76m³/s
Mean elev.
135m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 934.8 km²75.1% of basin
- 214.0 km²17.2% of basin
- 53.9 km²4.3% of basin
- 41.6 km²3.3% of basin
- 1.1 km²0.1% of basin
8 intersecting protected areas
Cna
IUCN IVState Natural Zakaznik
57.29 km² overlap
State Natural Zakaznik
9.28 km² overlap
State Natural Zakaznik
7.62 km² overlap
Urochishhe Verevkin bugor
IUCN IVState Natural Zakaznik
6.60 km² overlap
Istoki r. Cny
IUCN IVState Natural Zakaznik
5.25 km² overlap
Urochishhe Torfoboloto
IUCN IVState Natural Zakaznik
1.28 km² overlap
State Natural Zakaznik
1.11 km² overlap
Natural Monument
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 248 distinct species · 13 662 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Цна : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 65 interactions GloBI sur 3 types (connectance 16.0%, filtre Serrano α=0.2). 7 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°
4,7°C
Annual rain
599mm
Moisture idx (CMI)
-0,10
Runoff
172mm/an
PET
666mm
AET
480mm
Mean slope
1,1°
Water table
90cm
Forest
64%
Crops
17%
Urban
0%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)