Sungai kelas A
sunting
Sistem sungai kelas A (一級水系, Ikkyū suikei) merupakan sebutan yang diterapkan pada sungai dan saluran air yang dianggap penting bagi perekonomian negara, serta dianggap penting bagi konservasi alam di Jepang. Saat ini terdapat 109 sungai yang menggunakan sistem sungai kelas A.[3]
Daftar sungai dengan sistem Kelas A
sunting
Jumlah bendungan hanya mencakup bendungan yang ada dan yang belum dibangun yang memenuhi kriteria (15 meter (49 kaki) atau lebih tinggi) dari Hukum Sungai. Angka dalam kurung adalah jumlah bendungan di sungai utama, tidak termasuk anak sungai. Jumlah bendungan tidak selalu melebihi jumlah pembangkit listrik tenaga air karena pembangkit yang menggunakan bendung kurang dari 15 meter (49 ft) tidak dianggap sebagai bendungan.
Biro Pengembangan Hokkaidō
sunting
Nama
|
Panjang arus utama (km)
|
Daerah cekungan (km2)
|
Manajemen cekungan
|
Populasi wilayah cekungan
|
Anak sungai
|
Laju aliran tahunan rata-rata (m3/dtk)
|
Kebutuhan oksigen hayati
|
Bendungan
|
Pembangkit listrik tenaga air
|
Teshio
|
256
|
5,590
|
Hokkaidō
|
94,000
|
160
|
134.52
|
0.7
|
14 (2)
|
3
|
Shokotsu
|
84
|
1,240
|
28,000
|
25
|
29.33
|
1.0
|
0
|
2
|
Yūbetsu
|
87
|
1,480
|
36,000
|
17
|
32.45
|
1.7
|
1 (0)
|
3
|
Tokoro
|
120
|
1,930
|
142,000
|
57
|
22.64
|
2.6
|
2 (1)
|
0
|
Abashiri
|
115
|
1,380
|
94,000
|
25
|
14.02
|
2.5
|
1 (0)
|
2
|
Rumoi
|
44
|
270
|
28,000
|
13
|
11.84
|
1.5
|
3 (0)
|
0
|
Ishikari
|
268
|
14,330
|
2,500,000
|
464
|
133.18
|
1.1
|
83 (1)
|
34
|
Shiribetsu
|
126
|
1,640
|
38,000
|
40
|
68.41
|
0.4
|
3 (0)
|
7
|
Shiribeshi-Toshibetsu
|
80
|
720
|
16,000
|
29
|
23.69
|
0.5
|
2 (1)
|
8
|
Mu
|
135
|
1,270
|
13,000
|
20
|
38.54
|
0.6
|
2 (0)
|
1
|
Saru
|
104
|
1,350
|
13,000
|
28
|
48.24
|
0.6
|
4 (2)
|
4
|
Kushiro
|
154
|
2,510
|
177,000
|
38
|
26.32
|
1.7
|
0
|
0
|
Tokachi
|
156
|
9,010
|
340,000
|
209
|
85.36
|
1.7
|
14 (3)
|
16
|
Biro Pengembangan Tōhoku
sunting
Nama
|
Panjang arus utama (km)
|
Daerah cekungan (km2)
|
Manajemen cekungan
|
Populasi wilayah cekungan
|
Anak sungai
|
Laju aliran tahunan rata-rata (m3/dtk)
|
Kebutuhan oksigen hayati
|
Bendungan
|
Pembangkit listrik tenaga air
|
Iwaki
|
102
|
2,540
|
Aomori
|
482,400
|
97
|
76.07
|
1.6
|
21 (2)
|
5
|
Takase
|
64
|
867
|
80,372
|
23
|
50.10
|
0.9
|
3 (1)
|
0
|
Mabechi
|
142
|
2,050
|
Iwate, Aomori
|
188,000
|
30
|
47.62
|
1.1
|
6 (0)
|
5
|
Kitakami
|
249
|
10,150
|
Iwate, Miyagi
|
1,389,000
|
302
|
318.42
|
1.1
|
53 (1)
|
33
|
Naruse
|
89
|
1,130
|
Miyagi
|
190,000
|
61
|
26.49
|
1.3
|
13 (1)
|
3
|
Natori
|
55
|
939
|
1,125,589
|
30
|
17.32
|
1.1
|
9 (0)
|
7
|
Abukuma
|
239
|
5,400
|
Miyagi, Fukushima
|
1,380,000
|
197
|
52.22
|
1.9
|
19 (2)
|
25
|
Yoneshiro
|
136
|
4,100
|
Akita, Iwate
|
280,000
|
89
|
100.91
|
1.3
|
21 (0)
|
22
|
Omono
|
133
|
4,710
|
Akita
|
346,481
|
168
|
259.02
|
1.4
|
34 (0)
|
17
|
Koyoshi
|
61
|
1,190
|
80,000
|
44
|
60.60
|
1.1
|
12 (1)
|
7
|
Mogami
|
229
|
7,040
|
Yamagata
|
999,300
|
429
|
369.26
|
1.0
|
41 (1)
|
26
|
Aka
|
70
|
857
|
109,294
|
44
|
65.68
|
1.0
|
5 (1)
|
10
|
Biro Pengembangan Kantō
sunting
Nama
|
Panjang arus utama (km)
|
Daerah cekungan (km2)
|
Manajemen cekungan
|
Populasi wilayah cekungan
|
Anak sungai
|
Laju aliran tahunan rata-rata (m3/dtk)
|
Kebutuhan oksigen hayati
|
Bendungan
|
Pembangkit listrik tenaga air
|
Kuji
|
124
|
1,490
|
Fukushima, Ibaraki
|
201,981
|
53
|
23.58
|
0.8
|
1 (0)
|
7
|
Naka
|
150
|
3,270
|
Tochigi, Ibaraki
|
912,217
|
197
|
74.43
|
0.9
|
22 (2)
|
12
|
Tone
|
322
|
16,840
|
Gunma, Nagano, Tochigi, Saitama,
Tokyo, Chiba, Ibaraki
|
12,140,000
|
819
|
237.10
|
2.5
|
70 (4)
|
98
|
Ara
|
173
|
2,940
|
Saitama, Tokyo
|
9,300,000
|
127
|
27.77
|
4.4
|
13 (2)
|
11
|
Tama
|
138
|
1,240
|
Yamanashi, Tokyo, Kanagawa
|
4,250,000
|
52
|
40.28
|
1.7
|
2 (2)
|
5
|
Tsurumi
|
43
|
235
|
Tokyo, Kanagawa
|
1,840,000
|
11
|
7.83
|
8.0
|
0
|
0
|
Sagami
|
113
|
1,680
|
Yamanashi, Kanagawa
|
1,200,000
|
104
|
-
|
2.0
|
10 (3)
|
20
|
Fuji
|
128
|
3,990
|
Nagano, Yamanashi, Shizuoka
|
1,600,000
|
555
|
58.91
|
2.3
|
19 (0)
|
71
|
Biro Pengembangan Hokuriku
sunting
Nama
|
Panjang arus utama (km)
|
Daerah cekungan (km2)
|
Manajemen cekungan
|
Populasi wilayah cekungan
|
Anak sungai
|
Laju aliran tahunan rata-rata (m3/dtk)
|
Kebutuhan oksigen hayati
|
Bendungan
|
Pembangkit listrik tenaga air
|
Ara
|
73
|
1,150
|
Yamagata, Niigata
|
40,000
|
61
|
115.00
|
0.6
|
5 (3)
|
6
|
Agano
|
210
|
7,710
|
Fukushima, Gunma, Niigata
|
590,000
|
243
|
401.55
|
0.6
|
62 (8)
|
60
|
Shinano
|
367
|
11,900
|
Nagano, Gunma, Niigata
|
2,950,000
|
880
|
503.15
|
1.0
|
90 (1)
|
122
|
Seki
|
64
|
1,140
|
Nagano, Niigata
|
210,000
|
78
|
50.32
|
1.5
|
5 (1)
|
16
|
Hime
|
60
|
722
|
20,000
|
47
|
44.07
|
0.5
|
0
|
19
|
Kurobe
|
85
|
682
|
Toyama
|
71,000
|
25
|
37.00
|
0.8
|
6 (5)
|
18
|
Jōganji
|
56
|
368
|
30,000
|
49
|
16.23
|
0.6
|
8 (1)
|
27
|
Jintsū
|
120
|
2,720
|
Gifu, Toyama
|
380,000
|
105
|
183.65
|
1.4
|
25 (7)
|
60
|
Shō
|
115
|
1,180
|
28,032
|
48
|
47.72
|
1.0
|
18 (9)
|
27
|
Oyabe
|
68
|
667
|
Ishikawa, Toyama
|
300,000
|
64
|
27.99
|
1.5
|
14 (2)
|
5
|
Tedori
|
72
|
809
|
Ishikawa
|
40,000
|
35
|
77.21
|
0.5
|
7 (2)
|
24
|
Kakehashi
|
42
|
271
|
110,000
|
13
|
18.02
|
1.0
|
1 (1)
|
0
|
Biro Pengembangan Chūbu
sunting
Nama
|
Panjang arus utama (km)
|
Daerah cekungan (km2)
|
Manajemen cekungan
|
Populasi wilayah cekungan
|
Anak sungai
|
Laju aliran tahunan rata-rata (m3/dtk)
|
Kebutuhan oksigen hayati
|
Bendungan
|
Pembangkit listrik tenaga air
|
Kano
|
46
|
852
|
Shizuoka
|
640,000
|
76
|
21.40
|
1.5
|
0
|
7
|
Abe
|
51
|
567
|
170,000
|
36
|
41.44
|
0.8
|
0
|
2
|
Ōi
|
168
|
1,280
|
90,000
|
39
|
76.40
|
0.5
|
14 (7)
|
15
|
Kiku
|
28
|
158
|
70,000
|
25
|
2.21
|
1.8
|
2 (0)
|
0
|
Tenryū
|
213
|
5,090
|
Nagano, Aichi, Shizuoka
|
720,000
|
332
|
239.67
|
0.5
|
17 (5)
|
51
|
Toyo
|
77
|
724
|
Aichi
|
210,000
|
27
|
28.23
|
0.6
|
9 (1)
|
3
|
Yahagi
|
118
|
1,830
|
Nagano, Gifu, Aichi
|
690,000
|
94
|
43.99
|
1.0
|
25 (3)
|
25
|
Shōnai
|
96
|
1,010
|
Gifu, Aichi
|
2,500,000
|
76
|
26.21
|
4.7
|
18 (0)
|
2
|
Kiso
|
229
|
9,100
|
Nagano, Gifu, Shiga,
Aichi, Mie
|
1,700,000
|
391
|
291.05
|
0.7
|
64 (9)
|
77
|
Suzuka
|
38
|
323
|
Mie
|
110,000
|
46
|
11.23
|
1.4
|
0
|
0
|
Kumozu
|
55
|
550
|
90,000
|
40
|
14.36
|
1.6
|
6 (0)
|
1
|
Kushida
|
85
|
461
|
40,000
|
68
|
20.55
|
0.7
|
4 (0)
|
5
|
Miya
|
91
|
920
|
140,000
|
55
|
45.70
|
0.5
|
5 (2)
|
6
|
Biro Pengembangan Kinki
sunting
Nama
|
Panjang arus utama (km)
|
Daerah cekungan (km2)
|
Manajemen cekungan
|
Populasi wilayah cekungan
|
Anak sungai
|
Laju aliran tahunan rata-rata (m3/dtk)
|
Kebutuhan oksigen hayati
|
Bendungan
|
Pembangkit listrik tenaga air
|
Kuzuryū
|
116
|
2,930
|
Gifu, Fukui
|
666,225
|
147
|
108.26
|
0.8
|
20 (3)
|
25
|
Kita
|
30
|
211
|
Shiga, Fukui
|
21,389
|
12
|
11.68
|
0.6
|
1 (0)
|
1
|
Yura
|
146
|
1,880
|
Hyōgo, Kyōto
|
300,000
|
138
|
52.09
|
0.8
|
22 (3)
|
6
|
Yodo
|
75
|
8,240
|
Shiga, Kyōto, Ōsaka,
Mie, Nara, Hyōgo
|
11,650,000
|
965
|
267.51
|
1.9
|
66 (1)
|
34
|
Yamato
|
68
|
1,070
|
Nara, Ōsaka
|
2,150,000
|
178
|
23.94
|
3.3
|
11 (1)
|
0
|
Maruyama
|
68
|
1,300
|
Hyōgo
|
150,557
|
97
|
37.40
|
0.9
|
7 (0)
|
5
|
Kako
|
96
|
1,730
|
820,000
|
130
|
45.89
|
2.6
|
19 (0)
|
0
|
Ibo
|
70
|
810
|
200,000
|
47
|
29.04
|
0.8
|
4 (0)
|
6
|
Kino
|
136
|
1,750
|
Nara, Wakayama
|
689,000
|
181
|
58.77
|
2.1
|
9 (2)
|
6
|
Kumano
|
183
|
2,360
|
Nara, Mie, Wakayama
|
84,000
|
103
|
163.54
|
1.3
|
11 (5)
|
30
|
Biro Pengembangan Chūgoku
sunting
Nama
|
Panjang arus utama (km)
|
Daerah cekungan (km2)
|
Manajemen cekungan
|
Populasi wilayah cekungan
|
Anak sungai
|
Laju aliran tahunan rata-rata (m3/dtk)
|
Kebutuhan oksigen hayati
|
Bendungan
|
Pembangkit listrik tenaga air
|
Sendai
|
52
|
1,190
|
Tottori
|
200,000
|
87
|
61.68
|
0.8
|
6 (0)
|
17
|
Tenjin
|
32
|
490
|
65,500
|
32
|
24.03
|
1.2
|
8 (0)
|
8
|
Hino
|
77
|
870
|
60,800
|
56
|
33.55
|
1.1
|
12 (0)
|
14
|
Hii
|
153
|
2,070
|
Shimane, Tottori
|
435,000
|
227
|
40.26
|
1.4
|
24 (2)
|
13
|
Gōno
|
194
|
3,900
|
Hiroshima, Shimane
|
202,000
|
293
|
75.17
|
0.8
|
20 (2)
|
24
|
Takatsu
|
81
|
1,090
|
Shimane
|
38,600
|
92
|
51.88
|
0.7
|
4 (0)
|
5
|
Yoshii
|
133
|
2,110
|
Okayama
|
294,000
|
215
|
61.16
|
2.0
|
30 (1)
|
18
|
Asahi
|
142
|
1,810
|
335,000
|
147
|
57.01
|
1.8
|
25 (3)
|
9
|
Takahashi
|
111
|
2,670
|
Okayama, Hiroshima
|
273,000
|
121
|
61.81
|
2.5
|
29 (1)
|
19
|
Ashida
|
86
|
860
|
269,000
|
82
|
12.73
|
4.0
|
18 (2)
|
3
|
Ōta
|
103
|
1,710
|
Hiroshima
|
980,000
|
73
|
78.81
|
0.9
|
11 (2)
|
24
|
Oze
|
59
|
340
|
Hiroshima, Yamaguchi
|
26,500
|
23
|
12.05
|
2.6
|
4 (2)
|
6
|
Saba
|
56
|
460
|
Yamaguchi
|
31,100
|
32
|
18.69
|
0.7
|
4 (1)
|
1
|
Biro Pengembangan Shikoku
sunting
Nama
|
Panjang arus utama (km)
|
Daerah cekungan (km2)
|
Manajemen cekungan
|
Populasi wilayah cekungan
|
Anak sungai
|
Laju aliran tahunan rata-rata (m3/dtk)
|
Kebutuhan oksigen hayati
|
Bendungan
|
Pembangkit listrik tenaga air
|
Yoshino
|
194
|
3,750
|
Kōchi, Ehime, Tokushima, Kagawa
|
641,000
|
356
|
107.67
|
0.8
|
23 (4)
|
32
|
Naka
|
125
|
874
|
Tokushima
|
59,000
|
75
|
62.88
|
0.7
|
4 (3)
|
5
|
Doki
|
33
|
140
|
Kagawa
|
35,000
|
11
|
1.83
|
3.9
|
2 (0)
|
0
|
Shigenobu
|
36
|
445
|
Ehime
|
233,000
|
75
|
2.24
|
5.0
|
8 (0)
|
1
|
Hiji
|
103
|
1,210
|
112,000
|
475
|
37.61
|
1.0
|
8 (2)
|
4
|
Monobe
|
71
|
508
|
Kōchi
|
40,000
|
35
|
30.78
|
0.7
|
4 (3)
|
6
|
Niyodo
|
124
|
1,560
|
Ehime, Kōchi
|
105,000
|
166
|
100.07
|
0.7
|
5 (3)
|
18
|
Shimanto
|
196
|
2,270
|
100,000
|
319
|
121.02
|
0.6
|
5 (0)
|
6
|
Biro Pengembangan Kyūshū
sunting
Nama
|
Panjang arus utama (km)
|
Daerah cekungan (km2)
|
Manajemen cekungan
|
Populasi wilayah cekungan
|
Anak sungai
|
Laju aliran tahunan rata-rata (m3/dtk)
|
Kebutuhan oksigen hayati
|
Bendungan
|
Pembangkit listrik tenaga air
|
Yabe
|
61
|
647
|
Fukuoka
|
182,889
|
23
|
21.54
|
1.1
|
17 (2)
|
4
|
Onga
|
61
|
1,026
|
666,406
|
74
|
31.47
|
2.6
|
23 (0)
|
1
|
Yamakuni
|
56
|
540
|
Ōita, Fukuoka
|
36,801
|
39
|
20.81
|
0.9
|
1 (0)
|
1
|
Chikugo
|
143
|
2,863
|
Kumamoto, Ōita, Fukuoka, Saga
|
1,090,777
|
235
|
95.09
|
1.6
|
29 (2)
|
22
|
Matsūra
|
47
|
446
|
Saga
|
97,818
|
80
|
12.46
|
2.4
|
22 (0)
|
3
|
Rokkaku
|
47
|
341
|
122,827
|
79
|
4.36
|
2.1
|
9 (1)
|
0
|
Kase
|
57
|
368
|
133,412
|
51
|
14.10
|
1.0
|
3 (2)
|
8
|
Honmei
|
21
|
87
|
Nagasaki
|
54,583
|
18
|
2.11
|
1.8
|
2 (1)
|
0
|
Kikuchi
|
71
|
996
|
Kumamoto
|
208,694
|
68
|
39.56
|
1.1
|
1 (0)
|
4
|
Shira
|
74
|
480
|
131,375
|
16
|
25.39
|
2.5
|
3 (1)
|
4
|
Midori
|
76
|
1,100
|
517,189
|
59
|
36.17
|
2.4
|
4 (2)
|
11
|
Kuma
|
115
|
1,880
|
137,375
|
82
|
119.92
|
1.4
|
11 (4)
|
20
|
Ōita
|
55
|
650
|
Ōita
|
252,808
|
48
|
22.33
|
1.4
|
7 (1)
|
14
|
Banjō
|
38
|
464
|
56,527
|
52
|
12.17
|
1.1
|
5 (0)
|
0
|
Ōno
|
107
|
1,465
|
Kumamoto, Miyazaki, Ōita
|
206,818
|
138
|
61.36
|
0.6
|
14 (0)
|
10
|
Gokase
|
106
|
1,820
|
127,638
|
102
|
60.94
|
1.1
|
8 (2)
|
22
|
Omaru
|
75
|
474
|
Miyazaki
|
32,616
|
16
|
32.76
|
0.5
|
8 (4)
|
5
|
Ōyodo
|
107
|
2,230
|
Kagoshima, Miyazaki
|
601,321
|
134
|
107.61
|
1.3
|
16 (2)
|
12
|
Kawauchi
|
137
|
1,600
|
Kumamoto, Miyazaki, Kagoshima
|
195,944
|
129
|
91.09
|
0.7
|
4 (3)
|
5
|
Kimotsuki
|
34
|
485
|
Kagoshima
|
115,578
|
36
|
31.69
|
4.5
|
2 (0)
|
3
|
Sungai kelas B
sunting
Sungai-sungai yang lebih kecil namun penting. Ditetapkan sebagai Sistem sungai kelas B (二級水系, Nikyū Seikei), dikelola oleh pemerintah daerah di tingkat prefektur, tetapi tetap dilaporkan dan disetujui oleh pemerintah pusat.