HydroBASINS lev08 watershed · #7080502960
Bassin de Middle 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 : Adair, Clarke, Guthrie, Madison, Union +1
Sub-basin area
1 411,6km²
Upstream area
1 411,7km²
Discharge
9,49m³/s
Mean elev.
338m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- MadisonIowa · United States666.7 km²47.2% of basin
- AdairIowa · United States318.6 km²22.5% of basin
- WarrenIowa · United States269.5 km²19.1% of basin
- GuthrieIowa · United States140.2 km²9.9% of basin
- UnionIowa · United States12.5 km²0.9% of basin
- ClarkeIowa · United States6.0 km²0.4% of basin
17 intersecting protected areas
Reserve Program
5.20 km² overlap
Banner Flats
IUCN VWildlife Management Area
4.86 km² overlap
Clanton Creek Recreation
IUCN VWildlife Area
4.34 km² overlap
Watershed Protection
1.72 km² overlap
Meadow Lake
IUCN VWildlife Management Area
1.28 km² overlap
Red Rock
IUCN VWildlife Management Area
1.07 km² overlap
Wright Timber
IUCN VWildlife Area
0.97 km² overlap
Jensen Marsh
IUCN VLocal Conservation Area
0.89 km² overlap
Conservation Easement
0.84 km² overlap
8 more protected areassorted by overlap area
Reserve Program
0.61 km² overlap
Reserve Program
0.38 km² overlap
Fellowship
IUCN VForest
0.25 km² overlap
Farm Service Agency Interest Of Ia
IUCN Not AssignedConservation Easement
0.25 km² overlap
Karl and Grace Correll
IUCN VWildlife Area
0.20 km² overlap
Middle River Forest Area
IUCN VForest
0.18 km² overlap
Berry Woods Fee
IUCN VPrivate Conservation Land
0.17 km² overlap
Local Non-Profit Conservation Area
0.08 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 187 distinct species · 28 808 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Middle River : 33 espèces reliées par 82 interactions GloBI sur 3 types (connectance 10.0%, 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°
9,5°C
Annual rain
862mm
Moisture idx (CMI)
-0,18
Runoff
215mm/an
PET
1 046mm
AET
730mm
Mean slope
2,1°
Water table
149cm
Forest
1%
Crops
64%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)