HydroBASINS lev08 watershed · #2080013870
Bassin de Fiume Trigno
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 3 administrative regions : Campobasso, Chieti, Isernia
Sub-basin area
1 215,5km²
Upstream area
1 215,6km²
Discharge
13,61m³/s
Mean elev.
605m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 428.9 km²35.2% of basin
- 405.5 km²33.3% of basin
- 383.0 km²31.5% of basin
30 intersecting protected areas
Bosco di Collemeluccio - Selvapiana - Castiglione - La Cocozza
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
62.44 km² overlap
Monti Frentani e Fiume Treste
IUCN Not ReportedSpecial Protection Area (Birds Directive)
46.48 km² overlap
Monti Frentani e Fiume Treste
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
46.48 km² overlap
Montagnola Molisana
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
29.65 km² overlap
Lago di Guardialfiera - Foce fiume Biferno
IUCN Not ReportedSpecial Protection Area (Birds Directive)
19.72 km² overlap
M. di Trivento - B. Difesa C.S. Pietro - B. Fiorano - B. Ferrara
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.43 km² overlap
Fiume Trigno (medio e basso corso)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.96 km² overlap
Torrente Rivo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.18 km² overlap
Fiume Trigno (confluenza Verrino - Castellelce)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.72 km² overlap
21 more protected areassorted by overlap area
Special Areas of Conservation (Habitats Directive)
8.65 km² overlap
Colle Gessaro
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.65 km² overlap
Macchia Nera - Colle Serracina
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.25 km² overlap
Monte Mauro - Selva di Montefalcone
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.03 km² overlap
Bosco di Collemeluccio
IUCN Not ReportedSpecial Protection Area (Birds Directive)
5.01 km² overlap
Gessi di Lentella
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.36 km² overlap
State Nature Reserve
4.20 km² overlap
Fiume Trigno località Cannavine
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.10 km² overlap
Special Areas of Conservation (Habitats Directive)
4.06 km² overlap
Foce Trigno - Marina di Petacciato
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.30 km² overlap
Pesche - MonteTotila
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.20 km² overlap
Torrente Tirino (Forra) - Monte Ferrante
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.45 km² overlap
Gola di Chiauci
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.21 km² overlap
Cerreta di Acquaviva
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.05 km² overlap
Abetina di Rosello e Cascate del Rio Verde
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.04 km² overlap
Abetina di Rosello e Cascate del Rio Verde
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.04 km² overlap
Torrente Verrino
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.93 km² overlap
Morgia di Pietracupa - Morgia di Pietravalle
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.78 km² overlap
La Civita
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.68 km² overlap
Monte Sorbo (Monti Frentani)
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.51 km² overlap
Monte Sorbo (Monti Frentani)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.51 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 107 distinct species · 4 440 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Fiume Trigno : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 80 interactions GloBI sur 6 types (connectance 17.2%, filtre Serrano α=0.2). 9 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°
12,5°C
Annual rain
723mm
Moisture idx (CMI)
-0,16
Runoff
364mm/an
PET
863mm
AET
585mm
Mean slope
10,2°
Water table
399cm
Forest
29%
Crops
8%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)