Watershed Protection · usa
Emergency Watershed Protection Program - Floodplain Easement (EWPP-FPE), Marshall, SD
- Area
- 13 km²
- IUCN cat.
- V
- Year
- 1999
Overview
- Designation
- Watershed Protection
- IUCN category
- V · Paysage protégé
Paysage façonné par l'humain digne de conservation
- Established
- 1999
- Managing authority
- Natural Resources Conservation Service
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
143 distinct species · 1 385 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 Emergency Watershed Protection Program - Floodplain Easement (EWPP-FPE), Marshall, SD : 31 espèces reliées par 87 interactions GloBI sur 4 types (connectance 11.2%, 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).
Hydrology7 basins · 15 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
0,2km
Lake surface here
1,92km²
Basins crossed
7
Max stream order
2
Max drainage
1 614km²
Discharge in basins
0,1m³/s
Mean precip.
508mm/an
Mean T°
5,8°C
Moisture idx
-0,46
Max snow
30%
Mean runoff
36mm/an
Mean elev. (basins)
503m
Watersheds crossing here
- Basin #97960sub-area422 km²overlap3.31 km²25%
- Bassin de Crow Creek Drainage Ditchsub-area1 613,5 km²overlap2.65 km²20%
- Basin #95400sub-area338,7 km²overlap2.33 km²18%
- Basin #96780sub-area161,8 km²overlap1.78 km²14%
- Basin #95680sub-area21,6 km²overlap1.23 km²9%
- Bassin de Mud Creeksub-area1 188,2 km²overlap1.07 km²8%
- Basin #96630sub-area259,2 km²overlap0.69 km²5%
Lakes (15, top by area)
- Piyas Lakearea5,6 km²avg depth3.1 m
- Clear Lakearea4,3 km²avg depth3.0 m
- Opitz Lakearea3,1 km²avg depth5.6 m
- Lake #08649area2,2 km²avg depth2.8 m
- Opitz Lakearea1,3 km²avg depth5.0 m
- Lac 1036223area0,7 km²avg depth3.5 m
- Lac 1035664area0,7 km²avg depth2.7 m
- Lac 1036044area0,6 km²avg depth2.3 m
- Lac 1036452area0,5 km²avg depth1.9 m
Rivers / streams (1, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 45.59406, -97.50260
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.