Tide miscalculation

Arrived at Ocean Edge salt marsh an hour before high tide, but the marsh was already almost completely covered. Even so a reasonable count:
Common snipe 98
Jack snipe 3
Ringed plover 3
Reed bunting 1
MD

Model boat pond
As you were
Pochard - male and female
Tufted Duck - 5
Gadwall - 7
Little Egret - 1