Glen Lethnot has extensive areas of hill ground which have traditionally been managed as rough grazing and grouse moor. the lower slopes are farmed on a rotational grass and arable basis used to raise top quality beef and fat lambs.

Most people who live and work in Lethnot are employed on the sporting estates are game keepers mainly involved in grouse and pheasant shooting, deer stalking etc. with others employed on the livestock farms as shepherds, cattlemen or tractormen.

As with other glens there are becoming more houses let out or sold to people who travel to work, so although it keeps the glen inhabited and the school open, old traditions are fading out.

Balnamoon

One estate is the ancient one of Balnamoon. This estate is currently in the hands of the Carnegy-Arbuthnott family. The farms elsewhere are occupied by their owners, and range in size from about 50 to 600 acres. The landscape ranges from partially heather-clad upland at about 300 metres, down the "brae face" to the more level low ground. The high ground has very limited use beyond light grazing. The "brae face" is predominantly grassland for the production of prime Scotch beef and lamb. the lower ground is dedicated primarily to arable working, with crops of potatoes, wheat, barley, shopping turnips, oats, and oil seed rape. Both dairy and pork production have now been limited to a single farm. Areas of commercial and amenity woodland on the "brae face" and the low ground contribute to a variegated landscape. Many farmers are involved in schemes to protect and enhance the countryside, such as including the planting of native trees, creating of ponds, and protection of wetlands and water margins for the benefit of wildlife and plants.

Hunt Hill

Hunt Hill is another large estate in the glen. It stretches from the East of Glen Lethnot all the way to Glen Clova. It is primarily a hill estate offering Grouse shooting and Deer stalking.

Nathro

Nathro is part of Careston Estate. There is a mixture of hill and lower woodland ground offering Pheasant and Grouse shooting as well as Red and Roe deer stalking.
The name Nathro, dating from before 1462, was borrowed from a nearby stream, notable for its snake-like course. however there is a queer but persistent old folk-tale in the glen of a white adder that led its progeny through a holed stone.