HydroBASINS lev08 watershed · #2080278140
Bassin de Исса
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 across 2 countries : Krasnogorodskiy rayon, Ludza, Opochetskiy rayon, Pushkino-Gorskiy rayon, Sebezhskiy rayon
Sub-basin area
1 656km²
Upstream area
1 656km²
Discharge
11,73m³/s
Mean elev.
113m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- Opochetskiy rayonPskov · Russia618.1 km²37.1% of basin
- Sebezhskiy rayonPskov · Russia597.9 km²35.9% of basin
- Krasnogorodskiy rayonPskov · Russia331.2 km²19.9% of basin
- Pushkino-Gorskiy rayonPskov · Russia113.4 km²6.8% of basin
- 3.6 km²0.2% of basin
1 intersecting protected areas
Sebezhskij
IUCN IINational Park
8.51 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
895 distinct species · 1 556 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 Исса : 20 espèces dont 5 patrimoniales (LR IUCN CR/EN/VU) reliées par 63 interactions GloBI sur 4 types (connectance 16.7%, 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°
5,0°C
Annual rain
634mm
Moisture idx (CMI)
0,01
Runoff
226mm/an
PET
629mm
AET
481mm
Mean slope
1,0°
Water table
74cm
Forest
73%
Crops
13%
Urban
0%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)