HydroBASINS lev08 watershed · #7080047860
Bassin de Ogden Ditch
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 : Cameron, Chambers, Galveston, Jefferson, Liberty
Sub-basin area
1 815km²
Upstream area
1 815km²
Discharge
1,08m³/s
Mean elev.
5m
Administrative coverage
5 dept-equivalent regions (GADM L2)
- Chambers1061.4 km²58.6% of basin
- Jefferson409.8 km²22.6% of basin
- 147.0 km²8.1% of basin
- Liberty126.3 km²7.0% of basin
- 0.0 km²0.0% of basin
23 intersecting protected areas
Marine Protected Area
155.99 km² overlap
Mcfaddin
IUCN IVNational Wildlife Refuge
151.63 km² overlap
Anahuac
IUCN IVNational Wildlife Refuge
150.85 km² overlap
Marine Protected Area
145.34 km² overlap
Texas Point
IUCN IVNational Wildlife Refuge
19.61 km² overlap
Marine Protected Area
19.56 km² overlap
Moody
IUCN Not AssignedNational Wildlife Refuge
14.24 km² overlap
Marine Protected Area
14.24 km² overlap
Bolivar Flats Shorebird
IUCN VSanctuary
6.90 km² overlap
14 more protected areassorted by overlap area
Sea Rim State Park
IUCN IVMarine Protected Area
4.90 km² overlap
Reserve Program
2.94 km² overlap
Bolivar Flats
IUCN VAudubon Society Preserve or Sanctuary
1.99 km² overlap
Elm Grove Fee
IUCN VGrove
1.54 km² overlap
Mundy Marsh
IUCN VBird Sanctuary
1.49 km² overlap
Marine Protected Area
0.87 km² overlap
Candy Abshier
IUCN VWildlife Management Area
0.84 km² overlap
Reserve Program
0.78 km² overlap
High Island
IUCN VEasement
0.73 km² overlap
Reserve Program
0.59 km² overlap
Smith Oaks
IUCN VSanctuary
0.06 km² overlap
Smith Point Spoil
IUCN VAudubon Society Preserve or Sanctuary
0.04 km² overlap
Eubanks Woods
IUCN VEnvironmental System
0.04 km² overlap
Rollover Island
IUCN VSanctuary
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 506 distinct species · 2 443 366 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Ogden Ditch : 25 espèces reliées par 53 interactions GloBI sur 3 types (connectance 9.4%, 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°
20,4°C
Annual rain
1 293mm
Moisture idx (CMI)
-0,02
Runoff
595mm/an
PET
1 320mm
AET
1 063mm
Mean slope
0,0°
Water table
4cm
Forest
22%
Crops
46%
Urban
0%
Protected
18%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)