HydroBASINS lev08 watershed · #2080015620
Bassin de Mignone
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 2 administrative regions : Roma, Viterbo
Sub-basin area
1 472km²
Upstream area
1 472km²
Discharge
0,12m³/s
Mean elev.
177m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 1140.5 km²77.4% of basin
- 317.0 km²21.5% of basin
30 intersecting protected areas
Comprensorio Tolfetano-Cerite-Manziate
IUCN Not ReportedSpecial Protection Area (Birds Directive)
658.83 km² overlap
Comprensorio Bracciano-Martignano
IUCN Not ReportedSpecial Protection Area (Birds Directive)
166.98 km² overlap
Regional/Provincial Nature Park
148.58 km² overlap
State Nature Reserve
76.70 km² overlap
Lago di Bracciano
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
58.61 km² overlap
Regional/Provincial Nature Reserve
10.44 km² overlap
Regional/Provincial Nature Park
10.33 km² overlap
Il "Quarto" di Barbarano Romano
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.56 km² overlap
Valle di Rio Fiume
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.07 km² overlap
21 more protected areassorted by overlap area
Macchia di Manziana
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.01 km² overlap
Faggete di Monte Raschio e Oriolo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.96 km² overlap
Boschi mesofili di Allumiere
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.27 km² overlap
Macchia Grande di Ponte Galeria
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.34 km² overlap
Fiume Mignone (medio corso)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.82 km² overlap
Macchia Grande di Focene e Macchia dello Stagneto
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.16 km² overlap
Area di S. Giovenale e Civitella Cesi
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.03 km² overlap
Macchiatonda
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.42 km² overlap
Macchiatonda
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.42 km² overlap
Oasi di Macchiagrande
IUCN IVOther Protected Natural Regional Areas
2.40 km² overlap
Regional/Provincial Nature Reserve
2.11 km² overlap
Fondali tra Punta del Pecoraro e Capo Linaro
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.05 km² overlap
Mola di Oriolo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.76 km² overlap
State Nature Reserve
1.51 km² overlap
Saline di Tarquinia
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.49 km² overlap
Saline di Tarquinia
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.49 km² overlap
Monte Paparano
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.46 km² overlap
Bosco di Palo Laziale
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.29 km² overlap
Fondali antistanti S. Marinella
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.13 km² overlap
Sughereta del Sasso
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.10 km² overlap
Caldara di Manziana
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.90 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 150 distinct species · 112 910 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 46 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 Mignone : 38 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 104 interactions GloBI sur 2 types (connectance 9.6%, 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°
15,3°C
Annual rain
713mm
Moisture idx (CMI)
-0,27
Runoff
314mm/an
PET
974mm
AET
587mm
Mean slope
5,0°
Water table
343cm
Forest
18%
Crops
42%
Urban
14%
Protected
17%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)