HydroBASINS lev08 watershed · #7080437600
Bassin de Garvin Brook
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 1 administrative regions : Winona
Sub-basin area
274,7km²
Upstream area
274,7km²
Discharge
2,26m³/s
Mean elev.
322m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
1 dept-equivalent regions (GADM L2)
- 275.2 km²100.0% of basin
9 intersecting protected areas
Wetland of International Importance (Ramsar Site)
10.97 km² overlap
Wildlife And Fish Refuge
5.15 km² overlap
Easement
0.42 km² overlap
Martin County
IUCN VWaterfowl Production Area
0.20 km² overlap
Aquatic Management Area
0.18 km² overlap
Easement
0.14 km² overlap
Pope County
IUCN VWaterfowl Production Area
0.05 km² overlap
Aquatic Management Area
0.05 km² overlap
Big Stone County
IUCN VWaterfowl Production Area
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
952 distinct species · 4 948 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 47 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 Garvin Brook : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 115 interactions GloBI sur 4 types (connectance 10.6%, 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°
6,8°C
Annual rain
831mm
Moisture idx (CMI)
-0,12
Runoff
261mm/an
PET
941mm
AET
703mm
Mean slope
5,5°
Water table
243cm
Forest
43%
Crops
54%
Urban
0%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)