Priest's Tarn | |
---|---|
Location | Grassington Moor, North Yorkshire |
Coordinates | 54°07′16″N1°57′32″W / 54.121°N 1.959°W |
Primary outflows | Crag Grainings Blea Beck |
Basin countries | England |
Surface area | 1-hectare (2.5-acre) |
Surface elevation | 516.5 metres (1,695 ft) |
References | [1] [2] |
Priest's Tarn is an upland lake on Grassington Moor, in North Yorkshire, England. The water from Priest's Tarn was historically used for hydraulic mining purposes during the lead industry on Grassington Moor. The flow of water largely exits the hill to the south-east into Grimwith Reservoir, which in turn feeds into the River Wharfe. Walkers have observed that the tarn is looking like it is drying up.
Water exiting from Priest's Tarn flows south firstly through Crag Grainings and then into Blea Beck. Water was canalised here to feed the dams of the Grassington Moor lead industry. [3] The water flows to Grimwith Reservoir, some 5.3 kilometres (3.3 mi) to the south-east of the tarn, which feeds into the River Wharfe. [4]
Walkers who have navigated to the tarn, state that it has largely dried up in comparison to the expanse shown on Ordnance Survey maps. [5] [6] The average annual rainfall between 1916 and 1955 was 1,549 millimetres (61 in), [7] and between 1941 and 1970, it was 1,501 millimetres (59.1 in). [8]
Stones from the tarn were taken to a point a few hundred metres to the south-west of the tarn to build a memorial cairn for those who died in the Mossdale Cavern tragedy of 1967. The cairn marks the spot above ground where the bodies of six cavers were found after they had drowned in a flash flood underground. [9] Priest's Tarn sits atop the Black Keld Catchment SSSI; one of the largest and deepest cave drainage systems in England. [10] [11]
The western boundary of the civil parish of Grassington goes through the north-west of the tarn, and access to the tarn is via many paths in the area. [12] [13] One of the beds of sandstone on Grassington Moor has been named Priest's Tarn Grit. [14] The etymology of the name of the tarn is unsure, having been recorded in its earliest form in 1717. [15]
Meteorological table are available online from the UK Meteorological office. A selection of the results for Priest's Tarn are given below.
Year | Rainfall (annual) | Ref |
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1966 | 1,731 millimetres (68.1 in) | [16] |
1967 | 1,777 millimetres (70 in) | [17] |
1968 | 1,642 millimetres (64.6 in) | [18] |
1969 | 1,323 millimetres (52.1 in) | [7] |
1973 | 1,256 millimetres (49.4 in) | [8] |
The River Wharfe is a river in Yorkshire, England originating within the Yorkshire Dales National Park. For much of its middle course it is the county boundary between West Yorkshire and North Yorkshire. Its valley is known as Wharfedale.
Wharfedale is the valley of the upper parts of the River Wharfe and one of the Yorkshire Dales. It is situated in North Yorkshire, and the cities of Leeds and Bradford in West Yorkshire. It is the upper valley of the River Wharfe. Towns and villages in Wharfedale include Buckden, Kettlewell, Conistone, Grassington, Hebden, Bolton Abbey, Addingham, Ilkley, Burley-in-Wharfedale, Otley, Pool-in-Wharfedale, Arthington, Collingham and Wetherby. Beyond Wetherby, the valley opens out and becomes part of the Vale of York.
Grassington is a village and civil parish in North Yorkshire, England. The population of the parish at the 2011 Census was 1,126. Historically part of the West Riding of Yorkshire, the village is situated in Wharfedale, about 8 miles (10 km) north-west from Bolton Abbey, and is surrounded by limestone scenery. Nearby villages include Linton, Threshfield, Hebden, Conistone and Kilnsey.
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The River Dibb, also known as Barben Beck, is a small river located in North Yorkshire, England. It is a tributary of the River Wharfe. Grimwith Reservoir is at the head of the River Dibb at a point some 2.5 miles (4 km) from Appletreewick. The river flows for 5.2 kilometres (3.2 mi), and must maintain a flow of 273,000 cubic metres (9,600,000 cu ft) of water a day into the River Wharfe system.
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