HydroBASINS lev08 watershed · #7080546580
Bassin de Mad 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 : Champaign, Clark, Greene, Logan, Miami +1
Sub-basin area
1 711km²
Upstream area
1 711km²
Discharge
21,88m³/s
Mean elev.
328m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- Champaign686.6 km²40.1% of basin
- Clark641.2 km²37.4% of basin
- Logan184.1 km²10.7% of basin
- Greene99.3 km²5.8% of basin
- Montgomery88.0 km²5.1% of basin
- Miami13.7 km²0.8% of basin
14 intersecting protected areas
Reserve Program
2.37 km² overlap
Urbana
IUCN VWildlife Area
2.22 km² overlap
Clark Lake
IUCN VWildlife Area
1.17 km² overlap
Nature Preserve
0.86 km² overlap
Estel Wenrick
IUCN VWetlands
0.66 km² overlap
Davey Woods Dedicated
IUCN VNature Preserve
0.40 km² overlap
Cedar Bog Dedicated
IUCN VNature Preserve
0.29 km² overlap
Nature Preserve
0.15 km² overlap
City Of Dayton
IUCN VGreenspace
0.14 km² overlap
5 more protected areassorted by overlap area
Mad River
IUCN VWildlife Area
0.13 km² overlap
Nature Preserve
0.07 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Champaign, OH
IUCN VConservation Easement
0.06 km² overlap
Reserve Program
0.06 km² overlap
Mccracken Fen Dedicated
IUCN VNature Preserve
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 159 distinct species · 955 416 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 Mad River : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 61 interactions GloBI sur 3 types (connectance 10.3%, filtre Serrano α=0.2). 8 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°
10,3°C
Annual rain
966mm
Moisture idx (CMI)
-0,07
Runoff
398mm/an
PET
1 041mm
AET
791mm
Mean slope
1,1°
Water table
102cm
Forest
6%
Crops
57%
Urban
11%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)