National Wildlife Refuge · usa
Lower Rio Grande Valley
- Area
- 391 km²
- IUCN cat.
- IV
Overview
- Designation
- National Wildlife Refuge
- IUCN category
- IV · Aire d'habitats / espèces
Gestion active pour maintenir habitats / espèces particuliers
0 - Managing authority
- U.S. Fish and Wildlife Service ; Non-Governmental Organization ; Natural Resources Conservation Service
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
459 distinct species · 24 713 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Lower Rio Grande Valley : 25 espèces reliées par 66 interactions GloBI sur 3 types (connectance 10.5%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology18 basins · 11 lakes · 13 rivers
Hydrology metrics for this exact territory
Stream length here
56,5km
Lake surface here
23,61km²
Basins crossed
18
Max stream order
7
Max drainage
475 503km²
Discharge in basins
80,0m³/s
Mean precip.
635mm/an
Mean T°
23,0°C
Moisture idx
-0,57
Mean runoff
37mm/an
Mean elev. (basins)
32m
Watersheds crossing here
- Bassin de Río Bravo / Rio Grandesub-area2 242,3 km²overlap76.56 km²20%
- Bassin de West Main Drainsub-area3 143,5 km²overlap73.26 km²19%
- Bassin de Río Bravo / Rio Grandesub-area913,1 km²overlap60.33 km²15%
- Bassin de Main Supply Canalsub-area515,8 km²overlap55.30 km²14%
- Basin #49240sub-area200,2 km²overlap39.40 km²10%
- Bassin de Arroyo Coloradosub-area1 477,3 km²overlap28.28 km²7%
- Bassin de Los Olmos Creeksub-area1 376,7 km²overlap8.18 km²2%
- Bassin de Río Bravo / Rio Grandesub-area175,1 km²overlap7.62 km²2%
- Bassin de Río Bravo / Rio Grandesub-area29,1 km²overlap4.93 km²1%
9 more basinssorted by overlap
- Bassin de Pilot Channelsub-area1 090 km²overlap4.34 km²1%
- Basin #49160sub-area135,3 km²overlap4.16 km²1%
- Basin #49220sub-area194 km²overlap3.48 km²1%
- Bassin de Río Bravo / Rio Grandesub-area751,7 km²overlap3.40 km²1%
- Bassin de Gulf Intracoastal Waterwaysub-area2 162,5 km²overlap3.28 km²1%
- Bassin de la Joya Creeksub-area388,7 km²overlap3.23 km²1%
- Bassin de Río Bravo / Rio Grandesub-area388,2 km²overlap1.91 km²0%
- Bassin de Río Bravo / Rio Grandesub-area34 km²overlap0.47 km²0%
- Bassin de Río Cajas Pintassub-area2 000 km²overlap0.00 km²0%
Lakes (11, top by area)
- Bahia Grandearea33,8 km²avg depth2.1 m
- La Sal Viejaarea7,7 km²avg depth3.1 m
- La Sal Viejaarea2,9 km²avg depth3.1 m
- San Martin Lakearea2,7 km²avg depth1.5 m
- Sal del Rayarea2,7 km²avg depth2.6 m
- Carlson Lakearea1,5 km²avg depth0.7 m
- Adams Winter Garden Reservoirarea1,3 km²avg depth0.7 m
- Lac 1069337area0,4 km²avg depth1.8 m
- Lac 1069140area0,2 km²avg depth2.1 m
Rivers / streams (13, ord ≥ 4)
- Río Bravo / Rio Grandeord 7len here45.98 km1%total3249 km
- Garcias Creekord 7len here2.17 km4%total62 km
- Brownsville Ship Channelord 3len here1.57 km7%total22 km
- Los Olmos Creekord 4len here1.13 km1%total85 km
- Rio Grandeord 7len here1.05 km0%total1320 km
- Arroyo Morterosord 7len here0.88 km6%total14 km
- Canal Rodheord 3len here0.71 km1%total52 km
- Olmitos Creekord 1len here0.68 km3%total21 km
- Resaca de los Cuatesord 3len here0.59 km1%total45 km
- Arroyo Coloradoord 4len here0.56 km0%total112 km
- Little Creekord 2len here0.44 km3%total18 km
- Canal Anzaldúasord 3len here0.43 km2%total28 km
1 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 25.98364, -97.21654
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.