HydroBASINS lev08 watershed · #7080041110
Bassin de Gwynns Falls
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 : Baltimore, Harford
Sub-basin area
732,9km²
Upstream area
732,9km²
Discharge
7,28m³/s
Mean elev.
72m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 688.0 km²93.8% of basin
- 0.1 km²0.0% of basin
18 intersecting protected areas
State Park
5.29 km² overlap
Gunpowder Falls
IUCN IIIState Park
3.91 km² overlap
Leakin
IUCN IIIPark
3.56 km² overlap
Soldiers Delight
IUCN VNatural Environment Area
2.41 km² overlap
Dundee
IUCN IIINatural Environment Area
1.41 km² overlap
Robert E Lee
IUCN IIIPark
1.30 km² overlap
Carroll
IUCN IIIPark
0.67 km² overlap
Villa Nova
IUCN IIIPark
0.61 km² overlap
Maryland Transportation Authority
IUCN Not AssignedConservation Easement
0.24 km² overlap
9 more protected areassorted by overlap area
Baltimore County, MD easem
IUCN Not AssignedConservation Easement
0.22 km² overlap
Gwynn Falls
IUCN IIIPark
0.18 km² overlap
Towson University
IUCN Not AssignedConservation Easement
0.11 km² overlap
Powdermill
IUCN IIIPark
0.10 km² overlap
DNR
IUCN Not AssignedConservation Easement
0.07 km² overlap
Morgan State University
IUCN Not AssignedConservation Easement
0.06 km² overlap
Holt
IUCN IIIPark
0.04 km² overlap
Maryland Environmental Trust Easement #30
IUCN Not AssignedEasement
0.04 km² overlap
Morgan State University Area Existing
IUCN Not AssignedConservation Easement
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 660 distinct species · 2 147 527 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 Bassin de Gwynns Falls : 25 espèces reliées par 72 interactions GloBI sur 3 types (connectance 12.1%, 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°
12,8°C
Annual rain
1 117mm
Moisture idx (CMI)
0,00
Runoff
561mm/an
PET
1 122mm
AET
857mm
Mean slope
1,7°
Water table
116cm
Forest
26%
Crops
3%
Urban
75%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)