HydroBASINS lev08 watershed · #2080346530
Bassin de River Witham
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 : NA
Sub-basin area
701,4km²
Upstream area
701,4km²
Discharge
7,21m³/s
Mean elev.
60m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- NAEngland · United Kingdom550.1 km²78.1% of basin
- NAEngland · United Kingdom105.2 km²14.9% of basin
- NAEngland · United Kingdom34.5 km²4.9% of basin
- NAEngland · United Kingdom14.5 km²2.1% of basin
20 intersecting protected areas
Belton House
IUCN VNature Reserve
3.83 km² overlap
Whisby Nature Park
IUCN IVLocal Nature Reserve
1.08 km² overlap
Croxton Park
IUCN IVSite of Special Scientific Interest
0.97 km² overlap
Swanholme Lakes
IUCN IVSite of Special Scientific Interest
0.50 km² overlap
Swanholme Lakes
IUCN IVLocal Nature Reserve
0.49 km² overlap
Site of Special Scientific Interest
0.24 km² overlap
Terrace Hills Pasture
IUCN IVSite of Special Scientific Interest
0.11 km² overlap
Woodnook Valley
IUCN IVSite of Special Scientific Interest
0.10 km² overlap
Muston Meadows
IUCN IVNational Nature Reserve
0.09 km² overlap
11 more protected areassorted by overlap area
Muston Meadows
IUCN IVSite of Special Scientific Interest
0.09 km² overlap
Briery Wood Heronry, Belvoir
IUCN IVSite of Special Scientific Interest
0.06 km² overlap
Debdale Meadow, Muston
IUCN IVSite of Special Scientific Interest
0.04 km² overlap
Cribbs Meadow
IUCN IVNational Nature Reserve
0.04 km² overlap
Cribb's Lodge Meadows
IUCN IVSite of Special Scientific Interest
0.04 km² overlap
Allington Meadows
IUCN IVSite of Special Scientific Interest
0.04 km² overlap
Sproxton Quarry
IUCN IVSite of Special Scientific Interest
0.03 km² overlap
Grantham Canal
IUCN IVSite of Special Scientific Interest
0.02 km² overlap
Cross O'Cliff Orchard
IUCN IVLocal Nature Reserve
0.02 km² overlap
Honington Camp
IUCN IVSite of Special Scientific Interest
0.02 km² overlap
Copper Hill
IUCN IVSite of Special Scientific Interest
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 732 distinct species · 254 089 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 River Witham : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 76 interactions GloBI sur 2 types (connectance 12.8%, filtre Serrano α=0.2). 5 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°
9,5°C
Annual rain
602mm
Moisture idx (CMI)
-0,10
Runoff
326mm/an
PET
668mm
AET
495mm
Mean slope
1,2°
Water table
86cm
Forest
0%
Crops
62%
Urban
7%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)