The Flood Chiasm

A Noah (6:9)
 B Shem, Ham, and Japheth (6:10)
  C Corruption (6:11-13)
   D Ark (6:14-16)
    E Flood announced (6:17)
     F Covenant with Noah (6:18)
      G Cultural mandate (6:19-20)
       H Food inside the ark (6:21-22)
        I Command to enter ark (7:2-5) 
         J 600 years old (7:6)
          K  Week of waiting (7:7-12)
           L  All enter ark (7:13-15)
            M  God closes the door (7:16)
             N 40 days of rain (7:17)
              O  Waters increase (7:18)
               P   Mountains covered (7:19-20)
                Q 150 day flood (7:21-24)
                 R   God remembered Noah (8:1)
                Q' 150 day flood (8:2-3)
               P'   Mountains uncovered (8:4)
              O'  Waters decrease (8:5)
             N' 40 days of subsidence (8:6a)
            M'   Noah opens the window (8:6b)
           L'  Raven and dove leave ark (8:7-9)
          K'  Weeks of waiting (8:10-12)
         J' 601 years old (8:13a)
        I'  Command to leave ark (8:15-22)
       H' Food outside the ark (9:1-4)
      G' Cultural mandate (9:5-7)
     F' Covenant with all flesh (9:8-10)
    E' No more floods (9:11-17)
   D' Ark (9:18)
  C' Impropriety (9:19-24)
 B' Shem, Ham, and Japheth (9:25-27)
A' Noah (9:28-29)

Noah	6:09	9:28-29	Noah
Shem, Ham, and Japheth	6:10	9:25-27	Shem, Ham, and Japheth
Corruption	6:11-13	9:19-24	Impropriety
Ark	6:14-16	9:18	Ark
Flood announced	6:17	9:11-17	No more floods
Covenant with Noah	6:18	9:8-10	Covenant with all flesh
Cultural mandate	6:19-20	9:5-7	Cultural mandate
Food inside the ark	6:21-22	9:1-4	Food outside the ark
Command to enter ark	7:2-5	8:15-22	Command to leave ark
600 years old	7:06	8:13a	601 years old
Week of waiting	7:7-12	8:10-12	Weeks of waiting
All enter ark	7:13-15	8:7-9	Raven and dove leave ark
God closes the door	7:16	8:6b	Noah opens the window
40 days of rain	7:17	8:6a	40 days of subsidence
Waters increase	7:18	8:05	Waters decrease
Mountains covered	7:19-20	8:04	Mountains uncovered
150 day flood	7:21-24	8:2-3	150 day flood
God remembered Noah (8:1)

Derived from Vetus Testamentum by Gordon J. Wenham, "The Coherence of the Flood Narrative" p 338.

   Noah's Flood Chiasm