Where is llyn brianne

Work started on the reservoir in October , and the first water was supplied in October Princess Alexandra formally opened the project in mid A concrete extension was built into the original clay core and the rock walls raised to cover it This increased the capacity of the reservoir from 13,,, gallons ,,m3 to 14, million gallons ,,m3 , a total of 62 million tonnes of water.

Three Francis-pattern turbines were installed in a hydro-electric plant, one capable of handling the normal 1. The original proposal, to deliver the electricity into the National Grid at Llandovery via a line of pylons down the Towi Valley caused a strong protest from residents and visitors. Star Gaze! How to get there: 11 miles north of Llandovery. Parking: Two car parks at southern corner of reservoir. One with public toilets.

Two further car parks on eastern edge of reservoir. Check the pub opening hours, which are sporadic — there is no disappointment like rocking up at a country pub having worked up a thirst on the trail only to find it closed!

Best time to visit: Late summer or early autumn for glorious light and colours on the water and surrounding woods. Skip to content When we moved to remotest Carmarthenshire, the place we heard recommended to us again and again for a day trip was Llyn Brianne. Canadian-style remoteness! At a glance How to get there: 11 miles north of Llandovery. We love Plan your Visit. Llyn Brianne. Lake, free entry. Details Llyn Brianne grid reference: SN is a spectacular reservoir at almost m ft above sea level.

Prices Free entry. The Spaceguard Centre, Knighton. On the 15th May , Princess Alexandra officially opened the scheme. Movement in the rock fill of the downstream shoulder of the dam was monitored during construction. It was compared calculations from a retrospective analysis using finite element techniques, informed by data from laboratory tests on samples of rock fill.

The results showed broad agreement, confirming the design parameters. To meet future increases in water demand, the dam has been designed to allow for the raising of the crest by up to 18m. Provision has also been made for the pumped transfer of water from Llyn Brianne to the lower reaches of the River Wye and westwards to the River Usk. Concerns have been raised about the possible detrimental effects to fish stocks mainly salmon and sea trout from the particularly cold and somewhat acidic waters of the reservoir.

Occasional dosing with lime has been carried out to reduce the acidity. On 27th May , planning approval was granted for the addition of hydroelectric power generating capability at Llyn Brianne. The plant was designed by Hyder Consulting part of Welsh Water. As part of the project, in , the crest and spillway of the dam were raised by one metre, to 91m, making it the tallest dam in Britain