Paragraph A Permitted developmentF1

development not above ground level required in connection with conserving, redistributing or augmenting water resources,

development in, on or under any watercourse or land drainage works and required in connection with the improvement, maintenance or repair of that watercourse or those works,

the provision of a building, plant, machinery or apparatus in, on, over or under land for the purpose of survey or investigation,

the maintenance, improvement or repair of works for measuring the flow in any watercourse or channel,

any works authorised by or required in connection with an order made under section 73 of the Water Resources Act 1991 M1 (power to make ordinary and emergency drought orders),

any other development in, on, over or under their operational land, other than the provision of a building but including the extension or alteration of a building.