Quick Comparison: the Flood Stories in Genesis and Gilgamesh

	Genesis	Gilgamesh
Extent of flood	Global	Global
Cause	Man's wickedness	Man's sins
Intended for whom?	All mankind	One city & all mankind
Sender	Yahweh	Assembly of "gods"
Name of hero	Noah	Utnapishtim
Hero's character	Righteous	Righteous
Means of announcement	Direct from God	In a dream
Ordered to build boat?	Yes	Yes
Did hero complain?	Yes	Yes
Height of boat	Several stories (3)	Several stories (6)
Compartments inside?	Many	Many
Doors	One	One
Windows	At least one	At least one
Outside coating	Pitch	Pitch
Shape of boat	Rectangular	Square
Human passengers	Family members only	Family & few others
Other passengers	All species of animals	All species of animals
Means of flood	Ground water & heavy rain	Heavy rain
Duration of flood	Long (40 days & nights plus)	Short (6 days & nights)
Test to find land	Release of birds	Release of birds
Types of birds	Raven & three doves	Dove, swallow, raven
Ark landing spot	Mountain -- Mt. Ararat	Mountain -- Mt. Nisir
Sacrificed after flood?	Yes, by Noah	Yes, by Utnapishtim
Blessed after flood?	Yes	Yes

  Source: Lorey, Frank.  “The Flood of Genesis and the Flood of Gilgamesh” 

View from the Araratian plain near the city of Artashat, Armenia; Little Ararat (left) and Greater Ararat (right); by Սէրուժ Ուրիշեան (Serouj Ourishian) Wiki

Mount Nisir? (Pir Omar Gudrun or Pira Magrun?)