The ECN Data Centre

Site Information: Allt a'Mharcaidh

Sponsoring organisation(s)

Scottish Environment Protection Agency

Network(s) this site belongs to
UK Environmental Change Network
Upland Waters Monitoring Network

Site characteristics

Altitude m

The catchment area is indicated with a black line.
Click map to enlarge.

Mean annual pH*
Mean annual discharge* 0.3 cumecs
Mean annual water temperature*
* calculated from the ECN Data Centre database
Information held about this site
View a list of datasets collected at this site
View a list of publications about this site


Allt a'Mharcaidh is a stream site on the western flank of the Cairngorm Mountains. The catchment area is 998 ha and it drains to the River Feshie, a tributary of the River Spey. The catchment rises from 325 m at the sampling site to 1111 m and is covered by alpine and peaty podsols (60%) and blanket peat (40%). The underlying geology is intrusive biotite-granite of the Lower Old Red Sandstone age. Vegetation is characterised by a heather/fescue grass mixture (90%) with native pinewoods (c. 2%) interspersed along the lowest reaches. The catchment comprises part of the Cairngorm National Nature Reserve and land-use is confined to deer grazing. The stream gradient is steep and exposed bedrock, rapids and waterfalls and large boulders characterise the monitored channel section. There is also a terrestrial ECN site located in the Cairngorms National Nature Reserve.

Allt a'Mharcaidh is classified as having moderate acid deposition.

Upland Waters Monitoring Network


Related links



Mr Alan Hern

Scottish Environment Protection Agency
East Region, 7 Whitefriars Crescent, Perth, PH2 0PA

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