HydroBASINS lev08 watershed · #7080458810
Bassin de Otter Creek
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 : Lyon, Nobles, O'Brien, Osceola, Sioux
Sub-basin area
1 208,9km²
Upstream area
1 209,1km²
Discharge
6,17m³/s
Mean elev.
454m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- LyonIowa · United States448.6 km²37.0% of basin
- OsceolaIowa · United States395.4 km²32.6% of basin
- 270.7 km²22.3% of basin
- SiouxIowa · United States93.2 km²7.7% of basin
- O'BrienIowa · United States3.3 km²0.3% of basin
19 intersecting protected areas
Little Rock River
IUCN VWildlife Area
1.56 km² overlap
Reserve Program
0.67 km² overlap
Ackermen's River Woods
IUCN VLocal Conservation Area
0.58 km² overlap
Ashton Pits
IUCN VWildlife Management Area
0.42 km² overlap
George Rural Water Area
IUCN VLocal Conservation Area
0.38 km² overlap
Lambert Prairie
IUCN VState Wildlife Management Area
0.35 km² overlap
Bigelow
IUCN VState Wildlife Management Area
0.33 km² overlap
Otter Creek
IUCN VLocal Conservation Area
0.30 km² overlap
Reserve Program
0.30 km² overlap
10 more protected areassorted by overlap area
Boersma
IUCN VWildlife Area
0.24 km² overlap
Local Conservation Area
0.24 km² overlap
Recreation
0.19 km² overlap
Easement
0.09 km² overlap
Natural Area
0.08 km² overlap
Venenga
IUCN VWildlife Area
0.07 km² overlap
Dewald
IUCN VState Wildlife Management Area
0.07 km² overlap
Martin County
IUCN VWaterfowl Production Area
0.05 km² overlap
East Holman
IUCN VWildlife Management Area
0.05 km² overlap
Egret Marsh
IUCN VLocal Conservation Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
533 distinct species · 3 453 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 Otter Creek : 24 espèces reliées par 112 interactions GloBI sur 4 types (connectance 18.8%, 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°
7,2°C
Annual rain
696mm
Moisture idx (CMI)
-0,29
Runoff
161mm/an
PET
981mm
AET
593mm
Mean slope
0,7°
Water table
74cm
Forest
0%
Crops
85%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)