Our offices will be shut from close of business on Tuesday 23rd December 2025 until Monday 5th January 2026. Between these dates only credit card payments for ReFH 2 and WINFAP 5 will be dispatched, all other orders will go out in the new year. We will be providing limited software support on Monday 22nd and Tuesday 23rd December and the last posting date for LowFlows 2 dongles will be Thursday 18th December until Monday 5th January.
**Wishing you a very Merry Christmas and Happy New Year** :christmas_tree:
In depth
A catchment boundary defines the area of land which drains to a given point (the catchment outlet). CatchmentsUK enables boundaries to be generated automatically for catchments in the United Kingdom. Benefits of the system include:
- Fast, reliable and reproducible catchment boundaries produced as ESRI ShapeFiles (.shp) and comma separated files (.csv).
- Boundary definition routines underpinned by Ordnance Survey elevation data.
- Ability to overlay raster contextual layers to assist in verifying boundaries.
- Identification of catchments greater than 0.5km2.
The ability to identify the boundary of a catchment is fundamental to many hydrological and environmental applications. Catchment boundaries can be digitised manually from paper maps and then used in a variety of geographic information system (GIS) applications. This process can be laborious for large and/or high resolution catchment boundaries.