HydroBASINS lev08 watershed · #7080502200
Bassin de North 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, Dallas, Guthrie, Madison, Polk +1
Sub-basin area
1 040,8km²
Upstream area
1 040,8km²
Discharge
6,88m³/s
Mean elev.
314m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- MadisonIowa · United States616.9 km²59.2% of basin
- WarrenIowa · United States202.5 km²19.4% of basin
- AdairIowa · United States150.5 km²14.4% of basin
- PolkIowa · United States41.8 km²4.0% of basin
- GuthrieIowa · United States21.7 km²2.1% of basin
- DallasIowa · United States8.9 km²0.9% of basin
11 intersecting protected areas
Reserve Program
4.22 km² overlap
Badger Creek
IUCN VWildlife Area
3.95 km² overlap
Reserve Program
1.85 km² overlap
Watershed Protection
0.84 km² overlap
Conservation Easement
0.73 km² overlap
Blue Flag Marsh
IUCN VLocal Conservation Area
0.54 km² overlap
Guye Woods
IUCN VLocal Conservation Area
0.33 km² overlap
McBride Timber
IUCN VReserve
0.16 km² overlap
Goeldner Woods
IUCN VLocal Conservation Area
0.16 km² overlap
2 more protected areassorted by overlap area
Watershed Protection
0.13 km² overlap
Hanson Prairie
IUCN VLocal Conservation Area
0.12 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 285 distinct species · 43 977 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 North River : 26 espèces reliées par 81 interactions GloBI sur 4 types (connectance 12.2%, 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).
Hydroclimate (BasinATLAS lev08)
Mean T°
9,6°C
Annual rain
851mm
Moisture idx (CMI)
-0,18
Runoff
210mm/an
PET
1 044mm
AET
721mm
Mean slope
1,7°
Water table
141cm
Forest
1%
Crops
63%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)