Question: The Dorback Burn emerges on what freshwater loch north of Grantown?

Context paragraphs:
Loch Restil: Loch Restil; is a freshwater loch that lies in the pass between Glen Croe and Glen Kinglas on the Cowal peninsula, Argyll and Bute, West of Scotland.  One of the main roads to the west of Scotland coast, the A83, passes Loch Restil.  The burn that flows from Loch Restil is one of the feeds of Kinglas Water, in Glen Kinglas, which flows under the Butter Bridge.

Loch Voil: Loch Voil (Scottish Gaelic: "Loch a' Bheothail" ) is a small freshwater loch in Scotland.  It is a short, narrow loch approximately 5 km (3½ miles) in length.  It is separated from Loch Doine by fluvial deposits from the Monachyle Burn and is drained at its eastern end by the River Balvag at Balquhidder.  The Loch can be reached by a small single track road from Balquhidder leading to Inverlochlarig.

Dorback Burn, Findhorn: The Dorback Burn (Scottish Gaelic: "Dorbag / Uisge Dhorbaig" ) is a right-bank tributary of the River Findhorn in northeast Scotland.  It emerges from the northeast end of Lochindorb ( ) and flows northeast to a point where the A939 road and A940 road meet, where it is joined on its right by the Anaboard Burn.  The Dorback then flows north, accompanied by the A940 for several miles until it is joined by the River Divie, which also enters from the right (east).  Their combined waters flow on for a couple more miles to pass under the B9007 road and immediately enter the Findhorn ( ).

Lochindorb: Lochindorb (from the Scottish Gaelic: "Loch nan Doirb" meaning "loch of the minnows") is a freshwater loch north of Grantown on Spey in the Highland council area of Scotland.  This loch is home to the ruins of Lochindorb Castle, a former stronghold of the Clan Comyn and is built on what now is said to be an artificially created island.  It is also a popular spot with fishers and birdwatchers, the latter of whom come to see the local black-throated divers and greylag geese.  At the southeast edge of the loch there is a small patch of coniferous forest.

Loch Oich: Loch Oich ( ; Scottish Gaelic: "Loch Omhaich" ) is a freshwater loch in the Highlands of Scotland which forms part of the Caledonian Canal, of which it is the highest point.  This narrow loch lies between Loch Ness (to the Northeast) and Loch Lochy (to the Southwest) in the Great Glen.  It is fed by the River Garry (from Loch Garry) from the West, and feeds the River Oich from its North end.  The Laggan locks separate it from Loch Lochy.

Linlithgow Loch: Linlithgow Loch lies immediately north of the town of Linlithgow in West Lothian, Scotland.  1.3 kilometres in length and 0.4 in breadth, its area of 41 hectares makes it the largest natural freshwater loch in Lothian.  It is, however, shallow, with a mean depth of 2.3 metres and a maximum depth of 9.2 metres.  The loch is fed by four small streams, the Hatchery Burn, the Bonnytoun Burn, the Springfield Burn, and Bell's Burn, and drained by the Mill Burn on its western side, which eventually joins the Avon.

Loch Ericht: Loch Ericht (Scottish Gaelic, "Loch Eireachd") is a freshwater loch on the border between Perth and Kinross and the Highlands Council areas of Scotland.  It is situated at a height of 351 metres above sea level and has a north-east to south-west orientation.  The village of Dalwhinnie lies at the north east end of the loch.  The loch is 14.5 mi in length and has a surface area of approximately 7 square miles.  Loch Ericht is the tenth largest freshwater lake in Scotland and has a good reputation for its trout fishing.

Loch Laggan: Loch Laggan is a freshwater loch situated approximately 6.5 mi to the west of Dalwhinnie in the Scottish Highlands.  The loch has an irregular shape, runs nearly northeast to southwest and is approximately 7 mi in length.  It has an average depth of 68 ft and is 174 ft at its deepest.  The eastern end of the loch features the largest freshwater beach in Britain.  Since 1934 Loch Laggan has been a reservoir, retained behind the Laggan Dam, forming part of the Lochaber hydro-electric scheme.  At the northeast end of the loch is the hamlet of Kinloch Laggan.

Loch Loskin: Loch Loskin; is a freshwater loch, on the outskirts of Dunoon on the Cowal peninsula, Argyll and Bute, West of Scotland.  The outflow from the loch is the Milton Burn, which winds its way through Dunoon to the Firth of Clyde.  The A885 from Sandbank known as the ""High Road"" locally passes the loch.

Loch Morar: Loch Morar (Scottish Gaelic: Loch Mhòrair) is a freshwater loch in Lochaber, Highland, Scotland.  It is the fifth-largest loch by surface area in Scotland, at 26.7 km2 , and the deepest freshwater body in the British Isles with a maximum depth of 1017 ft .  The loch was created by glacial action around 10,000 years ago, and has a surface elevation of 9 m above sea level.  It separates the traditional district of North Morar (which contains the village of Morar), from Arisaig and Moidart

Supporting paragraphs: Dorback Burn, Findhorn Lochindorb
Answer: Lochindorb