HydroBASINS lev08 watershed · #7080398540
Bassin de Crow Creek Drainage Ditch
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 4 administrative regions : Brown, Dickey, Marshall, Sargent
Sub-basin area
1 613,5km²
Upstream area
1 613,5km²
Discharge
3,28m³/s
Mean elev.
413m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Marshall795.6 km²49.2% of basin
- Brown652.5 km²40.3% of basin
- 87.2 km²5.4% of basin
- 82.1 km²5.1% of basin
30 intersecting protected areas
Marshall County
IUCN VWaterfowl Production Area
68.48 km² overlap
Brown County
IUCN VWaterfowl Production Area
38.46 km² overlap
Sargent County
IUCN VWaterfowl Production Area
32.08 km² overlap
Watershed Protection
17.09 km² overlap
Reserve Program
13.47 km² overlap
Reserve Program
11.63 km² overlap
Putney Slough
IUCN VState Wildlife Management Area
11.22 km² overlap
Renziehausen
IUCN VState Wildlife Management Area
6.74 km² overlap
Dickey County
IUCN VWaterfowl Production Area
6.06 km² overlap
21 more protected areassorted by overlap area
Zabrasha
IUCN VState Wildlife Management Area
4.53 km² overlap
Putney #3
IUCN VState Wildlife Management Area
3.98 km² overlap
Marshall County
IUCN VWaterfowl Production Area
3.58 km² overlap
Black Slough
IUCN VState Wildlife Management Area
3.23 km² overlap
Marshall County
IUCN VWaterfowl Production Area
3.16 km² overlap
Watershed Protection
2.65 km² overlap
Reserve Program
2.39 km² overlap
Marshall County
IUCN VWaterfowl Production Area
1.59 km² overlap
Reserve Program
1.55 km² overlap
Reserve Program
1.50 km² overlap
Douglas
IUCN VState Wildlife Management Area
1.40 km² overlap
Willianson Slough
IUCN VState Wildlife Management Area
1.11 km² overlap
Conservation Easement
0.71 km² overlap
Putney #1
IUCN VState Wildlife Management Area
0.66 km² overlap
Brown County
IUCN VWaterfowl Production Area
0.64 km² overlap
Marshall County
IUCN VWaterfowl Production Area
0.64 km² overlap
Reserve Program
0.63 km² overlap
Nine Mile
IUCN VState Wildlife Management Area
0.62 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Marshall, SD
IUCN VConservation Easement
0.58 km² overlap
Reserve Program
0.23 km² overlap
Hyatt Slough
IUCN VState Wildlife Management Area
0.19 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
548 distinct species · 10 314 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Crow Creek Drainage Ditch : 26 espèces reliées par 69 interactions GloBI sur 4 types (connectance 13.1%, filtre Serrano α=0.2). 7 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°
5,8°C
Annual rain
491mm
Moisture idx (CMI)
-0,48
Runoff
26mm/an
PET
948mm
AET
425mm
Mean slope
0,3°
Water table
23cm
Forest
41%
Crops
70%
Urban
0%
Protected
13%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)