ggwis_topored.jpgWissett occupies the valley of Nunn's Beck, a tributary of the Northern Blyth, which rises at the boundary with Rumburgh.

Rumburgh occupies part of the watershed between the Northern Blyth, which runs through Halesworth and Sconch Beck, which enters the Waveney at Mendlesham.

Spexhall, the parish to the east of Wissett, is situated in the valley of Gavell Brook which joins Nunn's Beck just before it leaves Wissett to join Chediston Beck and the Northern Blyth at Halesworth.

These three communities are bound together in their origins from one large settlement. Rumburgh was detached in the 11th century when Ailmer, bishop of East Anglia and brother of Edward the Confessor's Archbishop, developed a priory estate on the high plateau waste land between Wissett and South Elmham.

Spexhall developed from a chapelry of Wissett with common lands to the east of Stone Street shared with Halesworth and Westhall.