Here is the flood story separated by the two primary authors. :
The Flood - Genesis 6:5 - 8:22
From pages 54-59 of "Who Wrote the Bible" by Richard Elliot Friedman
The J text is normal. The Priestly text is in bold.
Genesis 6:
5 And Yahweh saw that the evil of humans was great in the earth,
and all the inclination of the thoughts of their heart was only evil all
the day.
6 And Yahweh regretted that he had made humans in the earth,
and he was grieved to his heart.
7 And Yahweh said, "I shall wipe out the humans which I have
created from the face of the earth, from human to beast to creeping
thing to bird of the heavens, for I regret that I have made them."
8 But Noah found favor in Yahweh's eyes.
9 These are the generations of Noah: Noah was a right-
eous man, perfect in his generations. Noah walked with
God.
10 And Noah sired three sons: Shem, Ham and Japheth.
11 And the Earth was corrupted before God, and the
earth was filled with violence.
12 And God saw the earth and here it was corrupted, for
all flesh had corrupted it's way on the earth.
13 And God said to Noah, "The end of all flesh has come
before me, for the earth is filled with violence because of
them, and here I am going to destroy them with the earth.
14 Make yourself an ark of gopher wood, make rooms with
the ark, and pitch it outside and inside with pitch.
15 And this is how you shall make it: Three hundred
cubits the length of the ark, fifty cubits its width, and
thirty cubits its height.
16 You shall make a window for the ark, and you shall
finish it to a cubit from the top, and you shall make an en-
trance to the ark in its side. You shall make lower, second
and third stories for it.
17 And here I am bringing the flood, water over the
earth, to destroy all flesh in which is the breath of life
from under the heavens. Everything which is on the land
will die.
18 And I shall establish my covenant with you. And you
shall come to the ark, you and your sons and your wife and
your sons' wives with you.
19 And of all the living, of all flesh, you shall bring two
to the ark to keep alive with you, they shall be male and
female.
20 Of the birds according to their kind, and of the beasts
according to their kind, and of all the creeping things of
the earth according to their kind, two of each shall will come
to you to keep alive.
21 And you, take for yourself of all food which will be
eaten and gather it to you, and it will be for you and for
them for food.
22 And Noah did according to all that God commanded
him - so he did.
Genesis 7
1 And Yahweh said to Noah, "Come, you and all your household,
to the ark, for I have seen you as righteous before me in this genera-
tion.
2 Of all the clean beasts, take yourself seven pairs, man and his
woman, and of the beasts which are not clean, two, man and his
woman.
3 Also of the birds of the heavens seven pairs, male and female, to
keep alive seed on the face of the earth."
5 And Noah did according to all that Yahweh had commanded
him.
6 And Noah was six hundred years old, and the flood was
on the earth.
7 And Noah and his sons and his wife and his sons' wives with him
came to the ark from before the waters of the flood.
8 Of the clean beasts and of the beasts which
were not
clean, and of the birds and of all those which creep upon
the earth,
9 Two of each came to Noah to the ark, male and female
as God had commanded Noah.
10 And seven days later the waters of the flood were on the earth.
11 In the six hundredth year of Noah's life, in the second
month, in the seventeenth day of the month, on this day
all the fountains of the great deep were broken up, and the
windows of the heavens were opened.
12 And there was rain on the earth, forty days and forty nights.
13 In this very day, Noah and Shem, Ham, and Japheth,
the sons of Noah, and Noah's wife and his sons' three wives
with them came to the ark.
14 They and all the living things according to their
kind, and all the beasts according to their kind, and all
the creeping things that creep on the earth according to
their kind, and all the birds according to their kind, and
every winged bird.
15 And they came to Noah to the ark, two of each, of all
flesh in which is the breath of life.
16 And those which came were male and female, some of
all flesh came, as God had command him. And Yahweh closed it for him.
17 And the flood was on the earth for forty days and forty nights,
and the waters multiplied and raised the ark, and it was lifted from
the earth.
18 And the waters grew strong and multiplied greatly on the earth,
and the ark went on the surface of the waters.
19 And the waters grew very very strong on the earth, and they
covered all the high mountains that are under all the heavens.
20 Fifteen cubits above, the waters grew stronger, and they cov-
ered the mountains.
21 And all flesh, those that creep on the earth, the
birds, the beasts, and the wild animals, and all the swarm-
ing things that swarm on the earth, and all the humans
expired.
22 Everything that had the breathing spirit of life in its nostrils,
everything that was on the dry ground, died.
23 And he wiped out all the substance that was on the face of the
earth, from human to beast, to creeping thing, and to bird of the
heavens, and they were wiped out from the earth, and only Noah
and those who were with him in the ark were left.
24 And the waters grew strong on the earth a hundred
and fifty days.
Genesis 8:
1 And God rememberd Noah and all the living, and all
the beasts that were with him in the ark, and God passed a
wind over the earth, and the waters were decreased.
2 And the fountains of the deep and the windows of the
heavens were shut, and the rain was restrained from the heavens.
3 And the waters receded from the earth continually, and the
waters were abated at the end of a hundred fifty days.
4 And the ark rested, in the seventh month, in the seven-
teenth day of the month, on the mountains of Ararat.
5 And the waters continued receding until the tenth
month; in the tenth month, on the first of the month, the
tops of the mountains appeared.
6 And it was at the end of forty days, and Noah opened the win-
dow of the ark which he had made.
7 And he sent out a raven, and it went back and forth
until the waters dried up from the earth.
8 And he sent out a dove from him to see whether the waters had
eased from the face of the earth.
9 And the dove did not find a resting place for its foot, and it
returned to him to the ark, for waters were on the face of the earth,
and he put out his hand and took it and brought it to him in the
ark.
10 And he waited seven more days, and he again sent out a dove
from the ark.
11 And the dove came to him at evening time, and here was an
olive leaf torn off in its mouth, and Noah knew that the waters had
eased from the earth.
12 And he waited seven more days, and he sent out a dove, and it
did not return to him ever again.
13 And it was in the six hundred and first year, in the
first month, on the first of the month, the waters dried
from the earth. And Noah turned back the covering of the ark
and looked, and here the face of the earth had dried.
14 And in the second month, on the twenty-seventh day
of the month, the earth dried up.
15 And God spoke to Noah, saying,
16 "Go out from the ark, you and your wife and your sons'
wives with you.
17 All the living things that are with you, of all flesh,
of the birds, and of the beasts, and of all the creeping
things that creep on the earth, that go out with you,
shall swarm in the earth and be fruitful and multiply in
the earth."
18 And Noah and his sons and his wife and his sons' wives
went out.
19 All the living things, all the creeping things and all
the birds, all that creep on the earth, by their families,
they went out of the ark.
20 And Noah built an altar to Yahweh, and he took some of each
of the clean beasts and of each of the clean birds, and he offered
sacrifices on the altar.
21 And Yahweh smelled the pleasant smell, and Yahweh said to his
heart, "I shall not again curse the ground on man's account, for the
inclination of the human heart is evil from their youth, and I shall
not again strike all the living as I have done.
22 All the rest of the days of the earth, seed and harvest, and cold
and heat, and summer and winter, and day and night shall not
cease."