Linguistic Archaeology: Rivers in Japan

River Names
1. Abashiri
2. Ishikari
3. Chitose
4. Yūbari
5. Toyohira
6. Makomanai
7. Anano
8. Kushiro
9. Mu
10. Rumoi
11. Saru
12. Shiribeshi-Toshibetsu
13. Shiribetsu
14. Shokotsu
15. Teshio
16. Tokachi
17. Tokoro
18. Yūbetsu
19. Akan
20. Niikappu
21. Shibetsu
22. Shizunai
23. Koetoi
24. Mitsuishi
25. Iwaki
26. Takase
27. Mabechi
28. Kitakami
29. Naruse
30. Natori
31. Abukuma
32. Yoneshiro
33. Omono
34. Koyoshi
35. Mogami
36. Aka
37. Oirase
38. Kuji
39. Naka
40. Tone
41. Edo
42. Ara
43. Sumida
44. Kanda
45. Tama
46. Tsurumi
47. Sagami
48. Fuji
49. Agano
50. Shinano
51. Seki
52. Hime
53. Kurobe
54. Jōganji
55. Jinzū
56. Shō
57. Oyabe
58. Tedori
59. Kakehashi
60. Chikuma
61. Kuzuryū
62. Abe
63. Ōi
64. Sa
65. Tenryū
66. Toyo
67. Yahagi
68. Shōnai
69. Kiso
70. Nagara
71. Ibi
72. Kushida
73. Miya
74. Kuzuryu
75. Kita
76. Yura
77. Yodo
78. Seta
79. Uji
80. Yasu
81. Katsura
82. Hozu
83. Kamo
84. Kizu
85. Dōton-bori
86. Yamato
87. Maruyama
88. Kako
89. Ibo
90. Ki
91. Kumano
92. Shingu
93. Muko
94. Sendai
95. Tenjin
96. Hino
97. Hii
98. Gō
99. Takatsu
100. Yoshii
101. Asahi
102. Takahashi
103. Ashida
104. Ōta
105. Oze
106. Saba
107. Onga
108. Yamakuni
109. Chikugo
110. Yabe
111. Matsuura
112. Rokkaku
113. Kase
114. Honmyo
115. Kikuchi
116. Shira
117. Midori
118. Kuma
119. Ōita
120. Oono
121. Banjo
122. Gokase
123. Omaru
124. Ōyodo
125. Kimotsuki
126. -kawa
127. -gawa

Lets ignore repeat use of -gawa and -kawa and add them individually as these are repeating suffix that likely mean river.

Total: 127
Vowels
A % E % I % O % U %
71 55% 28 22% 67 52% 55 43% 43 33%

Consonantes
B % C % D % F % G %
16 12% 6 4% 7 5% 1 <1% 11 8%

H % J % K % L % M %
32 25% 7 5% 44 34% zero 0% 26 20%

N % P % Q % R % S %
28 22% 1 <1% zero 0% 28 22% 44 34%

T % V % W % X % Y %
33 25% zero 0% 3 2% zero 0% 19 14%

Z %
7 5%



River Names by Popularity of Use

55% A:
52% I, a: Ai, Ia.
43% O, i, a: Oi,
34% S, K, u, o, i, a: Kako, Ki, Aka, Kiso, Sa,
25% T, H, s, k, u, o, i, a: Asahi, Hii, Sho, Oita, Ota, Takahashi, Takatsu, Kita, Shokotsu,
22% R, N, E, t, h, k, u, s, o, i, a: Oono, Kase, Hino, Seta, Shonai, Kakehashi, Seki, Shinano, Tone, Naka, Takase, Koetoi, Akan, Anano, Teshio, Shira, Rokkaku, Katsura, Tedori, Ara, Oirase, Natori, Naruse, Saru, Tokoro, Ishikari, Kushiro,
20% M, r, n, e, t, h, k, u, s, o, i, a: kimotsuki, Omaru, Kuma, Matsuura, Muko, Kumano, Kamo, Hime, Tsurumi, Tama, Omono, Kitakami, Mitsuishi, Mu, Rumoi, Makomanai,
14% Y, m, r, n, e, t, h, k, u, s, o, i, a: Honmyo, Yamakuni, Yoshii, Yamato, Maruyama, Yasu, Yura, Miya, Toyo, Tenryu, Koyoshi, Yoneshiro, Toyohira, Yubari,
12% B, y, m, r, n, e, t, h, k, u, s, o, i, a: Ibo, Yabe, Saba, Ibi, Abe, Oyabe, Kurobe, Abukuma, Shibetsu, Yubetsu, Shiribetsu, Shiribeshi-Toshibetsu, Abashiri, Yubari,
8% G, b, y, m, r, n, e, t, h, k, u, s, o, i, a: Gokase, Onga, Go, Shingu, Nagara, Yahagi, Agano, Sagami, Mogami, Abashiri,
5% D, J, Z, g, b, y, m, r, n, e, t, h, k, u, s, o, i, a: Oyodo, Midori, Ashida, Sendai, Doton-bori, Yodo, Kushida, Kanda, Sumida, Edo, Banjo, Oze, Tenjin, Kizu, Hozu, Uji, Kuzuryu, Jinzu, Joganji, Kuji, Shizunai,
4% C, j, z, d, g, b, y, m, r, n, e, t, h, k, u, s, o, i, a: Kikuchi, Chikugo, Chikuma, Mabechi, Tokachi, Chitose,
2% W, c, j, z, d, g, b, y, m, r, n, e, t, h, k, u, s, o, i, a: -gawa, -kawa, Iwaki,
<1% F, P, w, c, j, z, d, g, b, y, m, r, n, e, t, h, k, u, s, o, i, a: Fuji, Niikappu,
Zero use: v, q, l, x

Conclusions
The Oi River is known to 43% of the population using the minimum alphabet. This location will be the most significant site for initial Japanese population development Archeology. The Oi river source begins at Mount Aino (literally Mount-ain though Ai-noyama will be its later name). Implying a proto-english subgroup migrated east and settled the Oi river in Japan.

Those 34% tier rivers are significant water ways primarily south west two hundred kilometres in the direction of the Kyoto region implying a significant migration in a south-west direction. North west east of the Oi river is Mt Fuji volcano and beyond it the Sakawa (Sa) river. The only possible conclusion is that they have migrated away from the volcano, considering the proximity of the un-named Fuji River near the Oi river would seem just as inhabitable if not for the possibility of death by sulphur dioxide and carbon monoxide from the volcano promising death.

Fuji and Niikappu Rivers are known by less than one percent of the population using the largest alphabet set at the time they are named.

As you can see, a model of population spread over time could be developed for these early peoples.