Hello, You’ve actually created two relations for the area.
‘Relation: Manikdoh (7953581)’ with the two outer ways is OK, tags are OK, possible tag to add is reservoir_type=water_storage.
‘Relation: Manikdoh reservoir (7953582)’ has the two outer ways and includes three inner ways which I cannot see on the Bing image, these look to be fiction and if so should be removed. This relation is a duplicate so should be removed entirely with the fictional inner ways. If my assumption of the inner ways is wrong my apologies.
There is also an untagged ‘Node: 5374420498’ which looks to serve no purpose so could be removed.