HydroBASINS lev08 watershed · #7080460850
Bassin de Black Earth 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 2 administrative regions : Dane, Iowa
Sub-basin area
433,9km²
Upstream area
434,1km²
Discharge
4,25m³/s
Mean elev.
299m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 359.6 km²82.7% of basin
- Iowa75.0 km²17.3% of basin
17 intersecting protected areas
Dane County
IUCN Not AssignedConservation Easement
3.49 km² overlap
Riverway
3.07 km² overlap
Lower Wisconsin Riverway
IUCN IaWetland of International Importance (Ramsar Site)
2.52 km² overlap
Kelly
IUCN Not AssignedEasement
0.68 km² overlap
Natural Area - Dedication
IUCN Not AssignedConservation Easement
0.65 km² overlap
Pleasure Valley Conservancy
IUCN Not AssignedConservation Easement
0.53 km² overlap
Brigham - Tollund
IUCN VConservation Area
0.41 km² overlap
Reserve Program
0.32 km² overlap
Reserve Program
0.30 km² overlap
8 more protected areassorted by overlap area
Natural Heritage Land Trust Easement #
IUCN Not AssignedEasement
0.26 km² overlap
Stream Bank Easement Program
IUCN Not AssignedEasement
0.16 km² overlap
Statewide Non-Point Easement Prog.
IUCN Not AssignedEasement
0.08 km² overlap
Black Earth Prairie
IUCN VNatural Area
0.08 km² overlap
Vermont Creek
IUCN Not AssignedConservation Easement
0.04 km² overlap
Rem-Vermont Creek
IUCN Not AssignedConservation Easement
0.03 km² overlap
Rem-Elvers Creek
IUCN Not AssignedConservation Easement
0.02 km² overlap
Indian Lake - Letzing
IUCN Not AssignedLake
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 381 distinct species · 167 269 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Black Earth Creek : 31 espèces reliées par 85 interactions GloBI sur 4 types (connectance 10.9%, 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°
7,5°C
Annual rain
822mm
Moisture idx (CMI)
-0,13
Runoff
313mm/an
PET
944mm
AET
694mm
Mean slope
4,5°
Water table
197cm
Forest
74%
Crops
27%
Urban
1%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)