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Table Major Rivers in Japan (Source: Chronological Scientific Tables 1995)
Name of River Catchment
Area (km2)
**
Total Length of
Main Stream
Channel (km)
Observation
Point
Catchment Area
Upstream of
Observation
Point (km2)
Discharge (m3/s) Observation
Period
Mean Annual Maximum Minimum
Tone River
Isikari River
Sinano River
Kitakami River
Kiso River

Tokati River
Yodo River
Agano River
Mogami River
Tesio River

Abukuma River
Tenryu River
Omono River
Yonesiro River
Fuzi River
16,840
14,330
11,900
10,150
9,100

9,010
8,210
7,710
7,040
5,590

5,400
5,090
4,710
4,100
3,990
322
268
367
249
227

156
75
210
229
256

239
213
133
136
128
Kurihashi
Ishikari Bridge
Ojiya
Tome
Inuyama

Moiwa
Hirakata
Maoroshi
Takaya
Maruyama

Tateyama
Kashima
Tsubakigawa
Futatsui
Kitamatuno
8,588
12,697
9,719
7,868
4,684

8,277
7,281
6,997
6,271
4,685

4,133
4,880
4,035
3,750
3,536
190
520
451
252
211

206
210
328
296
223

112
190
194
183
47
1,207
4,482
2,094
1,788
1,984

2,938
2,308
2,200
2,446
2,302

2,389
1,054
1,765
1,609
619
68
99
23
252
67

45
58
59
64
57

42
65
67
28
0
1938~92*
1954~92
1951~92
1952~92*
1951~92*

1954~92
1952~92
1951~92
1959~92*
1971~92

1956~92
1939~92*
1938~92*
1956~92*
1960~92*

(1) The rivers listed above are Class A rivers whose catchment area is 2,000 km2 or more whose main streamchannel length is 100 km or more, and for which continuos discharge observation data are available.Discharge values are 1992 data.
(2) The number "0" in the minimum discharge column was obtained by rounding the actual value to the nearest integer.
(3) Others
* Data obtained during the observation period are not completely continuos.
** The length of the channel which has the greatest discharge. In Japan, this is roughly the same as the length of main stream.



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