HydroBASINS lev08 watershed · #7080542380
Bassin de Olentangy 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 6 administrative regions : Crawford, Delaware, Franklin, Marion, Morrow +1
Sub-basin area
1 391,9km²
Upstream area
1 391,9km²
Discharge
14,71m³/s
Mean elev.
308m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- 455.8 km²32.7% of basin
- Marion335.1 km²24.0% of basin
- Delaware309.1 km²22.2% of basin
- Crawford158.9 km²11.4% of basin
- Franklin122.9 km²8.8% of basin
- Richland11.8 km²0.8% of basin
21 intersecting protected areas
Camp Lazarus
IUCN VNature Preserve
0.92 km² overlap
Delaware Strine
IUCN VWildlife Area
0.47 km² overlap
Seymour Woods NA
IUCN VNatural Area
0.42 km² overlap
Stratford Woods
IUCN VNature Preserve
0.37 km² overlap
Gallant Farm
IUCN VPreserve
0.27 km² overlap
Conservation Easement
0.18 km² overlap
Reserve Program
0.14 km² overlap
Parkland
0.07 km² overlap
Conservation Area
0.04 km² overlap
12 more protected areassorted by overlap area
Island View Parkland
IUCN VParkland
0.04 km² overlap
Audobon
IUCN VNature Preserve
0.03 km² overlap
Parkview Parkland
IUCN VParkland
0.01 km² overlap
Olenbrook Parkland
IUCN VParkland
0.01 km² overlap
Olentangy River Access
IUCN Not AssignedWildlife Area
0.01 km² overlap
Brevoort
IUCN VNature Preserve
0.01 km² overlap
Local Conservation Area
0.01 km² overlap
Unknown
IUCN VPark
0.00 km² overlap
Glen High Parkland
IUCN VParkland
0.00 km² overlap
Olentangy-Broadmeadows
IUCN VTrail
0.00 km² overlap
Makris Parkland
IUCN VParkland
0.00 km² overlap
Tionda Drive Parkland
IUCN VParkland
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 159 distinct species · 1 080 321 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Olentangy River : 23 espèces reliées par 75 interactions GloBI sur 4 types (connectance 14.2%, 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°
9,8°C
Annual rain
959mm
Moisture idx (CMI)
-0,08
Runoff
338mm/an
PET
1 041mm
AET
789mm
Mean slope
0,6°
Water table
42cm
Forest
4%
Crops
62%
Urban
16%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)