Wye Secondary Devonian ORS Operational Catchment
Water bodies
There are 1 water bodies in this operational catchment.
This catchment crosses the border with Wales. To access data and information on the Welsh side of the border, visit Natural Resources Wales / River Basin Management Plans.
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Protected Areas
About
The Wye Secondary Devonian ORS is a Secondary aquifer and a DWPA. Groundwater flow is largely influenced by topography and drainage. Permeability is limited due to low permeability mudstones, marls and siltstones inter-bedded with the sandstones. The dominant groundwater flow mechanism is via fracture flow and the effective saturated thickness is taken to be 40m, with unsaturated zone depths of around 20m. There are some large Welsh Water and Severn Trent Water Ltd spring and borehole sources, mainly concentrated in the Forest of Dean. About 50% of the groundwater body is covered by a NVZ.
