Trinity Broads
The Trinity Broads are part of the Broads National Park in Norfolk, England, comprising 5 broads in total. The three largest are Rollesby Broad, Ormesby Broad and Filby Broad, and there are two much smaller broads named Lily Broad and Ormesby Little Broad. The broads themselves cover an area of 0.64 square miles (1.7 km2), and form part of an area of 14 square miles (36 km2) managed by the Broads Authority, and designated as a Site of Special Scientific Interest in 1998.
Situated to the north west of Caister-on-Sea, the Trinity Broads are on a tributary of the River Bure, but there is no navigable link to the main river system, and they are therefore virtually undisturbed.
In 1995, most of the broads were bought by Essex and Suffolk Water, as a means of supplying water to Great Yarmouth. The quality of the water is good, and has been further protected by the construction of a sluice where Muck Fleet meets the River Bure. In order to meet their statutory requirements for conservation and recreation, ESW have formed a partnership with the Broads Authority, the Environment Agency and English Nature. A joint management plan has ensured that recreational use is maintained at a low level and the value of the broads as a wildlife habitat is retained. The level of water in Muck Fleet is lower than that of the River Bure, and water from the channel is pumped into the river by Stokesby pumping station, which is maintained by the internal drainage board.
A project to rectify poor water quality in Ormesby Broad began in 2010. Costing £120,000 over three years, the project involves pumping mud from the bottom of the lake. The mud is rich in nutrients, as a result of agricultural runoff, and removing it increases the capacity of the lake to store water, which is extracted as drinking water, as well as providing better habitat for reedbeds at the edges of the lake. Twelve lagoons were prepared to hold the mud until it dried, but initial archaeological investigation of the site for the lagoons revealed the presence of a Middle Bronze Age field system, the first such system found to the east of the Cambridgeshire Fens. The start of pumping was delayed while the site was investigated. Pumping began in March 2010, but was delayed again when live ammunition was sucked up in the mud, and became trapped in the pumps.
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