HydroBASINS lev08 watershed · #7080705980
Bassin de Big Sunflower River
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 : Humphreys, Sharkey, Yazoo
Sub-basin area
367,9km²
Upstream area
367,9km²
Discharge
9,55m³/s
Mean elev.
33m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 184.1 km²50.1% of basin
- 104.4 km²28.4% of basin
- 79.2 km²21.5% of basin
10 intersecting protected areas
Sunflower
IUCN VState Conservation Area
27.01 km² overlap
Theodore Roosevelt
IUCN IVNational Wildlife Refuge
9.33 km² overlap
Reserve Program
7.16 km² overlap
Wetlands Reserve Program (WRP)
IUCN Not AssignedReserve Program
5.07 km² overlap
Panther Swamp
IUCN IVNational Wildlife Refuge
4.02 km² overlap
Conservation Easement
0.58 km² overlap
Us-Ms-92-31
IUCN Not AssignedConservation Easement
0.51 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Humphreys, MS
IUCN VConservation Easement
0.41 km² overlap
Red Gum
IUCN IaResearch Natural Area
0.16 km² overlap
1 more protected areassorted by overlap area
Sunflower
IUCN VWildlife Management Area
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
369 distinct species · 1 852 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 Big Sunflower River : 34 espèces reliées par 109 interactions GloBI sur 4 types (connectance 11.5%, filtre Serrano α=0.2). 10 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°
17,6°C
Annual rain
1 389mm
Moisture idx (CMI)
0,01
Runoff
822mm/an
PET
1 377mm
AET
1 029mm
Mean slope
0,1°
Water table
10cm
Forest
11%
Crops
59%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)