The River Alde is a river in Suffolk, passing by Snape and Aldeburgh. The river nearly emerges on the North Sea at Aldeburgh, but within yards of the beach it is blocked by a shingle bank and flows behind a shingle spit for 10 miles parallel to the coastline, accepting the waters of other streams as it goes. This part of the waterway is known as the River Ore as it broadens and approaches Orford, and aseparates Orford Ness from the mainland. At the end of its course the river empties into the North Sea.
The source of the River Alde is near Laxfield in the same area as the River Blyth. Initially a stream, it becomes tidal and widens considerably when it reaches Snape. It meanders east past Aldeburgh, after which this part of the river was named.
Once the river entered the sea near Orford, but the mouth of the river has now been pushed some five miles further south as longshore drift has pushed the shingle to accumulate over hundreds of years. South or Orford the Ore splits into two channels to form Havergate Island and is joined by its tributary, the Butley River, before reaching the sea at Shingle Street.
During Tudor times, the river served as a port from which four ships were launched to fight against the Spanish Armada. The river no longer serves as a port but as an area for yacht club members to gather to sail.
The lower reaches of the river passes through marshland and shingle or sand beaches, most of which is now owned by the National Trust.
The shingle spit that blocks the river, Orford Ness, is now some 10 miles in length and is owned by the National Trust, and known as the "Orford Ness National Nature Reserve". Before the National Trust took ownership of this land, it was the site of a secret military base where experimental technologies were tries from 1913 right iup to the Cold War.
 The main area through which the River Alde flows is open countryside in private ownership, much of it arable farmland.
The tidal reaches (below Snape Bridge) are within the Suffolk Coast and Heaths Area of Outstanding Natural Beauty, as well as being a Site of Special Scientific Interest, a designated Special Area of Conservation and a Special Protection Area.
An RSPB reserve, Boyton Marshes, is situated between the River Ore and the Butley River.
A registered charity, the Alde & Ore Association, exists to "preserve and protect for the public benefit the Alde, Ore and Butley Creek rivers and their banks from Shingle Street to their tidal limits". An area of mudflats 54.4 acres (22.0 ha) in area on the southern side of the river near Iken is managed by the Suffolk Wildlife Trust as a the Alde Mudflats nature reserve.
In popular culture
The novel What I Was by Meg Rosoff is set on the coastline where the River Ore meets the sea.
| ("Wikimedia Commons" has material|
about River Alde)
- Joint Nature Conservation Committee - Alde, Ore and Butley Estuaries
- Orford Ness National Nature Reserve information at the National Trust
- RSPB - Boyton Marshes
- The Alde & Ore Association
- Aldeburgh Yacht Club
- Orford Sailing Club
- Slaughden Sailing Club
- Boyton Marshes guide from the RSPB
- Theo Clarke and Nick Sinclair, Ebb & Flow River Heritage Walks (Ipswich: Leveretts, 2008) ISBN 978-0-9559958-0-4.
- "Alde and Ore Association-Protecting Aldeburgh's River". http://www.aldeburgh-uk.com/aldenore.htm. Retrieved 2007-12-29.
- "Orford Ness National Nature Reserve". National Trust for Places of Historic Interest or Natural Beauty. http://www.nationaltrust.org.uk/main/w-vh/w-visits/w-findaplace/w-orfordness.htm. Retrieved 2007-12-29.
- "The mystery of Orford Ness". BBC Suffolk. http://www.bbc.co.uk/suffolk/content/articles/2006/05/24/orfordness_feature.shtml. Retrieved 2007-12-29.
- Alde-Ore Estuary, SSSI citation, Natural England. Retrieved 2013-05-29.
- "Guidance for the Management of Coastal Vegetated Shingle". http://www.english-nature.org.uk/livingwiththesea/project_details/good_practice_guide/shingleCRR/shingleguide/Annexes/Annex06Orfordness/Index.htm. Retrieved 2007-12-30.
- "Alde, Ore and Butley Estuaries". http://www.jncc.gov.uk/protectedsites/sacselection/sac.asp?EUCode=UK0030076. Retrieved 2007-12-30.
- "Suffolk Coast and Heaths - Caring for the coast and its special wildlife". Suffolk Coasts and Heaths. http://www.suffolkcoastandheaths.org/text.asp?PageId=91. Retrieved 2007-12-30.
- "Alde and Ore Association". http://www.aldeandore.org/. Retrieved 2012-01-27.
- Alde Mudflats, Suffolk Wildlife Trust. Retrieved 2013-05-29.