The reserve, near Fakenham, hopes to reopen tomorrow after being closed for four days because of flooding caused by the heavy rains last week.
On Saturday, the venue has had to cancel its participation for Disabled Access Day because of the impact of the flooding.
A statement on its website apologised for any inconvenience caused.
It added: 'We are hoping to re-open on Monday 14th subject to water levels receding.'
Further updates will be announced over social media.
The nature reserve, near Fakenham, is one of the only in the country which has full disabled access and facilities.
It was participating in 'Disabled Access Day', a nation-wide event with hundreds of venues across the country opening their doors to encourage those who are disabled to visit a new place to try a new activity.
The reserve hosts a wide variety of wildlife and is located next to the River Wensum.
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