HydroBASINS lev08 watershed · #7080462080
Bassin de Ocheyedan 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 5 administrative regions : Clay, Dickinson, Nobles, O'Brien, Osceola
Sub-basin area
1 099,6km²
Upstream area
1 099,6km²
Discharge
5,75m³/s
Mean elev.
449m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- OsceolaIowa · United States506.2 km²46.0% of basin
- ClayIowa · United States243.7 km²22.1% of basin
- 123.7 km²11.2% of basin
- DickinsonIowa · United States119.8 km²10.9% of basin
- O'BrienIowa · United States108.2 km²9.8% of basin
24 intersecting protected areas
Ocheyedan
IUCN VWildlife Management Area
1.99 km² overlap
Peterson
IUCN VState Wildlife Management Area
1.25 km² overlap
Wachter
IUCN VState Wildlife Management Area
1.16 km² overlap
Lake Bella
IUCN VState Wildlife Management Area
0.71 km² overlap
Devil's Ridge
IUCN VWildlife Management Area
0.64 km² overlap
Riverton
IUCN VWildlife Area
0.63 km² overlap
James Willey
IUCN VState Wildlife Management Area
0.56 km² overlap
John Erickson
IUCN VState Wildlife Management Area
0.49 km² overlap
Nobles County
IUCN VIWaterfowl Production Area
0.47 km² overlap
15 more protected areassorted by overlap area
Reserve Program
0.39 km² overlap
Martin County
IUCN VWaterfowl Production Area
0.29 km² overlap
Rush Lake (Osceola)
IUCN VWildlife Management Area
0.29 km² overlap
Ely Bauermeister
IUCN VWildlife Management Area
0.23 km² overlap
Sutton Lake Marsh
IUCN VWildlife Management Area
0.20 km² overlap
Mori Prairie Fee
IUCN VPrivate Conservation Land
0.16 km² overlap
Reserve Program
0.16 km² overlap
Tom Tuttle Marsh
IUCN VWildlife Management Area
0.14 km² overlap
Easement
0.12 km² overlap
Easement
0.10 km² overlap
Ocheyedan Mound
IUCN VState Preserve
0.09 km² overlap
Bruegmann
IUCN VWildlife Area
0.08 km² overlap
Farm Service Agency Interest Of Ia
IUCN Not AssignedConservation Easement
0.05 km² overlap
Big Stone County
IUCN VWaterfowl Production Area
0.05 km² overlap
Dirk's Wildlife
IUCN VManagment Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
681 distinct species · 11 643 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Ocheyedan River : 29 espèces reliées par 105 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°
7,1°C
Annual rain
714mm
Moisture idx (CMI)
-0,26
Runoff
165mm/an
PET
966mm
AET
608mm
Mean slope
0,6°
Water table
62cm
Forest
1%
Crops
88%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)