Test holes will be dug at a Dereham beauty spot this week as trials begin to help the planning of a new flood alleviation scheme.
A section of Neatherd Moor will be closed off while Anglian Water undertakes the temporary ground investigation works.
The team will dig test holes to gain a better understanding of the soil conditions and to locate any underground utilities.
Final details of the broader scheme will not be finalised until the planning process is completed, but the general objective is to increase the underground capacity for storm conditions.
Anglian Water spokesman Antony Innes said: 'We are doing these tests as part of the planning process for a proposed flood alleviation scheme in the area.
'A small section of the moor will be fenced off for part of the week to allow the test holes to be dug safely.
'This project should only last for a few days and will have no impact on road access or the nearby play area.
'We apologise for any inconvenience this may cause to residents.'
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here