krupicka
Double Eagle Member
805.01.A A thrown disc establishes a position where it first comes to rest.Eveliina is on the teebox at 39:00 and you can see her disc splash in the water at 39:20.
The announcers say that the creek is marked as casual and that the disc probably floated away, but since the spotter spotted where it went in she is able to get "casual relief" from that spot and it is not considered a lost disc.
805.01.B A thrown disc is considered to be at rest when it first stops moving. A disc in water or foliage is considered to be at rest when it is moving only as a result of movement of the water, the foliage, or the wind.
The rationale here was since the spotter knew where the disc came to rest, that is the disc's position regardless of the fact that it then floated away.