HydroBASINS lev08 watershed · #7080491340
Bassin de North Raccoon 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 : Calhoun, Carroll, Greene, Pocahontas, Sac +1
Sub-basin area
2 397,2km²
Upstream area
4 238,1km²
Discharge
24,33m³/s
Mean elev.
358m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de North Raccoon River969 km²
- Bassin de Cedar Creek872 km²
6 dept-equivalent regions (GADM L2)
- CalhounIowa · United States1264.5 km²52.7% of basin
- SacIowa · United States423.5 km²17.6% of basin
- GreeneIowa · United States349.8 km²14.6% of basin
- CarrollIowa · United States275.7 km²11.5% of basin
- PocahontasIowa · United States71.5 km²3.0% of basin
- WebsterIowa · United States16.0 km²0.7% of basin
30 intersecting protected areas
Kiowa Marsh
IUCN VWildlife Management Area
2.91 km² overlap
Sac County
IUCN VIWaterfowl Production Area
2.68 km² overlap
Reserve Program
2.12 km² overlap
North Raccoon River
IUCN VWildlife Management Area
2.10 km² overlap
Reserve Program
1.93 km² overlap
Tomahawk Marsh
IUCN VWildlife Management Area
1.53 km² overlap
Black Hawk
IUCN VWildlife Management Area
1.50 km² overlap
Reserve Program
1.40 km² overlap
Reserve Program
1.09 km² overlap
21 more protected areassorted by overlap area
Towhead Lake
IUCN VWildlife Management Area
0.70 km² overlap
Butrick Bluff
IUCN VWildlife Area
0.67 km² overlap
Watershed Protection
0.63 km² overlap
South Twin Lake
IUCN VWildlife Management Area
0.60 km² overlap
Johnson Prairie
IUCN VLocal Conservation Area
0.47 km² overlap
Bristol
IUCN VWildlife Area
0.47 km² overlap
Wildlife Area
0.44 km² overlap
Reserve Program
0.43 km² overlap
Artesian Lake
IUCN VWildlife Management Area
0.38 km² overlap
Sac City Wetland Complex
IUCN VCity Wetland
0.36 km² overlap
Buck Run Creek Area
IUCN VLocal Conservation Area
0.35 km² overlap
Easement
0.31 km² overlap
Hobart
IUCN VWildlife Area
0.24 km² overlap
Raccoon River
IUCN VWildlife Area
0.22 km² overlap
Finn Pond
IUCN VWildlife Management Area
0.17 km² overlap
Rainbow Bend
IUCN VWildlife Management Area
0.15 km² overlap
Buttolf Century Farm
IUCN VWildlife Area
0.11 km² overlap
Horseshoe Bend
IUCN VWildlife Area
0.09 km² overlap
Almer Noyd
IUCN VWildlife Area
0.09 km² overlap
North Raccoon-Andrews
IUCN VAccess
0.09 km² overlap
Lohr
IUCN VWildlife Preserve
0.08 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
855 distinct species · 39 254 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Raccoon River : 25 espèces reliées par 68 interactions GloBI sur 3 types (connectance 12.1%, filtre Serrano α=0.2). 9 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°
8,4°C
Annual rain
805mm
Moisture idx (CMI)
-0,21
Runoff
187mm/an
PET
1 016mm
AET
684mm
Mean slope
0,6°
Water table
54cm
Forest
1%
Crops
89%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)