HydroBASINS lev08 watershed · #2080592600
Bassin de Nera
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 : Ascoli Piceno, Macerata, Perugia, Rieti, Terni
Sub-basin area
1 450,5km²
Upstream area
1 450,5km²
Discharge
18,59m³/s
Mean elev.
1 021m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 911.5 km²62.7% of basin
- 206.3 km²14.2% of basin
- 202.5 km²13.9% of basin
- 127.5 km²8.8% of basin
- 5.2 km²0.4% of basin
30 intersecting protected areas
National Park
326.01 km² overlap
Monti Sibillini (versante umbro)
IUCN Not ReportedSpecial Protection Area (Birds Directive)
178.74 km² overlap
Monti Sibillini (versante umbro)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
178.74 km² overlap
Monti Reatini
IUCN Not ReportedSpecial Protection Area (Birds Directive)
60.47 km² overlap
Bassa Valnerina: Monte Fionchi - Cascata delle Marmore
IUCN Not ReportedSpecial Protection Area (Birds Directive)
59.60 km² overlap
Monti Coscerno - Civitella - Aspra (sommità)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
53.57 km² overlap
Valnerina, Montagna di Torricchio, Monte Fema e Monte Cavallo
IUCN Not ReportedSpecial Protection Area (Birds Directive)
41.25 km² overlap
Dalla Gola del Fiastrone al Monte Vettore
IUCN Not ReportedSpecial Protection Area (Birds Directive)
33.57 km² overlap
Gola della Valnerina - Monte Fema
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
31.60 km² overlap
21 more protected areassorted by overlap area
Valle Rapegna e Monte Cardosa
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
23.42 km² overlap
Valle Rapegna e Monte Cardosa
IUCN Not ReportedSpecial Protection Area (Birds Directive)
23.42 km² overlap
Parco fluviale del Nera
IUCN VRegional/Provincial Nature Park
19.44 km² overlap
Monte Bove
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
19.28 km² overlap
Monti Galloro - dell'Immagine
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
14.60 km² overlap
Monti Pizzuto - Alvagnano
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
13.78 km² overlap
Gola del Corno - Stretta di Biselli
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
12.36 km² overlap
Bosco Vallonina
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.26 km² overlap
Monti lo Stiglio - Pagliaro
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.04 km² overlap
Monte Solenne (Valnerina)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.21 km² overlap
Fosso Salto del Cieco (Ferentillo)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.73 km² overlap
Monte Maggio (sommità)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.28 km² overlap
Monte la Pelosa - Colle Fergiara (Valnerina)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.83 km² overlap
Faggete del S. Lorenzo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.59 km² overlap
Valnerina
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.79 km² overlap
Gruppo Monte Terminillo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.35 km² overlap
Media Val Casana (Monti Coscerno - Civitella)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.82 km² overlap
Pian Perduto
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.83 km² overlap
Boschi di Terne - Pupaggi
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.40 km² overlap
Vallone del Rio Fuggio
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.93 km² overlap
Roccaporena - Monte della Sassa
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.71 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 952 distinct species · 22 498 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 Nera : 16 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 76 interactions GloBI sur 5 types (connectance 20.1%, filtre Serrano α=0.2). 12 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°
10,0°C
Annual rain
861mm
Moisture idx (CMI)
0,07
Runoff
428mm/an
PET
806mm
AET
630mm
Mean slope
17,7°
Water table
588cm
Forest
75%
Crops
11%
Urban
0%
Protected
24%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)