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Wales 2010    Pont ar Elan 

 

Ebbw Vale

Elan reservoirs

Stream in upper Elan Valley

Twmpa

 

Bridge over the uppermost Elan reservoir - mountain stream study

 

 

 

This study features a small length of the Afon Elan just above the bridge over the stream, centre. At 320 metres of just over 1000' this is a decidedly upland stream, with the classic features of a typical streambed.

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Rapids push past resistant strata across the stream bed; upstream is the inevitable pool.

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The resistant band, and rapids, and their relationship with the bridge.

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Details of the river's course; with modest dimensions and depths, the stream represent an ideal location for students to study stream morphology and take the requisite measurements.

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Above the mini-rapids and pool, a gravel bar has grown into the centre of the stream.

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Riffles, deeps and a bar!

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Just above this section a river gauge is mentioned on the map, which should be of use in determining the regime characteristics of the stream at this point.

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Wales Elan Valley water rivers Craig Goch Reservoir fieldwork rapids waterfalls riffles deeps bar

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