HydroBASINS lev08 watershed · #7080454280
Bassin de Rock 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 3 administrative regions : Lyon, Nobles, Rock
Sub-basin area
480,5km²
Upstream area
1 454,4km²
Discharge
7,4m³/s
Mean elev.
456m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rock River777 km²
- Bassin de Tchan Pepedan198 km²
3 dept-equivalent regions (GADM L2)
- 367.9 km²76.4% of basin
- 76.3 km²15.8% of basin
- LyonIowa · United States37.2 km²7.7% of basin
14 intersecting protected areas
Rock River
IUCN VState Wildlife Management Area
1.67 km² overlap
Conservation Easement
0.97 km² overlap
Boon Ranch
IUCN VWildlife Area
0.85 km² overlap
Russ Blanford
IUCN VState Wildlife Management Area
0.62 km² overlap
Easement
0.45 km² overlap
P.F. Mulder
IUCN VState Wildlife Management Area
0.35 km² overlap
Martin County
IUCN VWaterfowl Production Area
0.34 km² overlap
Big John's
IUCN VState Wildlife Management Area
0.27 km² overlap
Easement
0.15 km² overlap
5 more protected areassorted by overlap area
Aquatic Management Area
0.14 km² overlap
Permanent
IUCN VWetland Preserve
0.08 km² overlap
Stephen
IUCN VState Wildlife Management Area
0.08 km² overlap
Big Stone County
IUCN VWaterfowl Production Area
0.07 km² overlap
Rock County
IUCN VWaterfowl Production Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
637 distinct species · 12 463 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Rock River : 20 espèces reliées par 61 interactions GloBI sur 4 types (connectance 15.0%, 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°
7,2°C
Annual rain
678mm
Moisture idx (CMI)
-0,32
Runoff
159mm/an
PET
996mm
AET
577mm
Mean slope
0,8°
Water table
88cm
Forest
0%
Crops
84%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)