731:, an essential product in the Edo capital, was produced in the central region of the Boso Peninsula, and was another essential trade product on the Obitsu. In the most prosperous period of the Obitsu River, there were 35 riverboats active in trade, and most were property of individual villages along middle and upper reaches of the river. The mouth of the Obitsu River became a lively trade center, as the Port of Kisarazu had exclusive rights to sea traffic between the western Bōsō Peninsula and the
61:
2225:
1308:
773:
2237:
1509:
754:
lotus root cultivation. The low, damps areas of the river have been developed into rice paddy fields and fields for the production of lotus root. The renkon of the area became popular in the Tokyo area at the end of the Edo period, and remain in cultivation today. Additionally, the shallows at the
748:. Despite the large industrial development of the lower part of Obitsu River, the middle and upper ranges of the continue to be used extensively for rice and vegetable production. The Obitsu River in the area around the Nagasuka, Kisarazu has historically been used for large-scale
289:(322 kilometers (200 mi)). The upper reaches of the Obitsu meander through Kimitsu, the middle of the river runs more directly through Kisarazu, and the lower reaches form and estuary and a triangular delta in Sodegaura, an area known as the
790:
Lake
Kameyama has developed tourist facilities. The lake is ringed by a pedestrian path, has a family campground, and is the only spot in Chiba Prefecture for lure fishing. Lake Kameyama is accessible from the JR East Kururi Line
743:
The lower parts of the Obitsu River along Tokyo Bay were developed in the early 20th century to support growing industrial facilities along Tokyo Bay., and this area ultimately became an important part of the
727:
tribute to the
Tokugawa shogunate, passed from the former Kururi Region of Kimitsu to the port at Kisarazu, typically crossing a distance of 27.5 square kilometers (10.6 sq mi).
681:
Inland water transportation to connect the agriculture-rich middle and upper regions of the Obitsu developed slowly and reached its zenith on the Obitsu River in the
665:, along the Obitsu in the Gion District of Kisarazu, dates from the mid-Jōmon period. While there is some evidence of large-scale settlement along the Obitsu in the
2083:
274:
142:
777:
303:
290:
18:
1238:
1274:
1112:
2268:
293:. The Obitsu then turns briefly west back into Kisarazu to empty into Tokyo Bay. The tidal flats of the Obitsu host numerous species of birds and
338:
2073:
2078:
1259:
1007:
873:
65:
1296:
945:[Highly endangered crab species, Uca lactea lactea, first discovery at Tokyo Bay at mouth of Obitsu River in Kisarazu].
265:. The river is 88 kilometers (55 mi) in length and has a drainage area of 273.2 square kilometers (105.5 sq mi).
2263:
1513:
1304:
2241:
1289:
1039:
1235:
649:, or shell mounds. The shell mounds of Chiba Prefecture are the largest in Japan, and the Gion Shell Mound
1390:
1109:
693:. The shogunate excavated and straightened the meandering middle part of the Obitsu River to develop new
1666:
973:
911:
826:
331:
1256:
1004:
307:, was discovered at the mouth of the river, and may be the northernmost habitat of the crab in Japan.
1561:
1221:
318:, and empties into Tokyo Bay. The two rivers are the longest in the western region of the peninsula.
2273:
2229:
1282:
1641:
745:
1312:
792:
327:
1476:
1618:
1081:
1067:
1053:
1025:
832:
278:
1193:(in Japanese). Vol. v.1, Genshi kodai hen, Kazusa-no-kuni. Chiba-ken. pp. 52–63.
8:
1130:
315:
2164:
2159:
1989:
1936:
1869:
916:
Nihon
Daihyakka Zensho (Nipponika) (日本大百科全書(ニッポニカ) “Encyclopedia of Japan (Nipponika)”)
686:
1178:(in Japanese). Vol. v.1, Genshi kodai hen, Kazusa-no-kuni. Chiba-ken. p. 52.
669:(300 BC–250 AD), the entire eastern Bōsō area was again richly populated in the
1804:
1163:(in Japanese). Vol. v.1, Genshi kodai hen, Kazusa-no-kuni. Chiba-ken. p. 6.
96:
1964:
1946:
1831:
1395:
865:
705:
258:
254:
165:
73:
1759:
1734:
1548:
1443:
1095:
2184:
2063:
1999:
1623:
1471:
1361:
1242:
1116:
940:
761:
709:
690:
337:
on the upper part of the Obitsu River in 1979. The dam forms an artificial lake,
250:
69:
2068:
1799:
1784:
1701:
1633:
1373:
1144:
845:
Clamming and shell gathering are popular in the Banzu Tidal Flats of the Obitsu.
639:
2058:
1889:
1874:
1578:
1573:
1491:
1481:
1433:
1428:
1423:
1415:
1405:
1356:
1346:
246:
161:
2174:
2095:
1739:
1603:
314:, similarly to the Obitsu, emerges from Mount Motokiyosumi, flows east across
2257:
2202:
2154:
2149:
2090:
2004:
1914:
1884:
1851:
1826:
1714:
1691:
1588:
1583:
1556:
1496:
1466:
1453:
1351:
1263:
1011:
298:
33:
20:
2197:
2192:
2102:
2053:
2014:
2009:
1994:
1959:
1899:
1879:
1859:
1841:
1814:
1794:
1779:
1754:
1729:
1676:
1671:
1608:
1598:
1593:
1438:
1400:
1380:
1338:
670:
666:
2169:
1979:
1929:
1744:
1954:
1749:
1709:
1656:
1613:
1568:
1385:
1366:
829:
694:
334:
311:
176:
1774:
60:
2144:
1969:
1924:
1919:
1909:
1904:
1894:
1836:
1809:
1789:
1764:
1724:
1719:
1686:
1681:
1661:
1651:
1486:
1461:
682:
294:
286:
1984:
1974:
1864:
1819:
1769:
1646:
713:
342:
282:
191:
1326:
825:, 358 Gion, Kisarazu, Chiba. The park is a 10-minute walk from the
728:
345:
in Chiba
Prefecture with a diameter of 35 kilometers (22 mi).
2038:
2126:
1536:
772:
750:
646:
285:. It is the second largest river in Chiba Prefecture after the
1307:
1188:
1173:
1158:
809:
lotus fields of
Kisarazu can be accessed from Obitsuzeki Park
262:
113:
77:
981:
949:(in Japanese). Chiba, Chiba Prefecture: Chiba Nippo Co., Ltd
919:
855:
Other sources place the river at 75 kilometers (47 mi).
273:
The Obitsu emerges from the densely forested valleys around
757:
717:
698:
732:
724:
980:(in Japanese). Tokyo: Shogakukan. 2012. Archived from
918:(in Japanese). Tokyo: Shogakukan. 2012. Archived from
642:(ca. 14,000–300 BC) as evidenced by large-scale
638:
The Obitsu River supported a rich population in the
2255:
978:Dijitaru daijisen (デジタル大辞泉 “Digital Dictionary”)
818:
658:
610:
584:
558:
532:
506:
480:
454:
428:
402:
376:
238:
153:
812:
652:
604:
578:
552:
526:
500:
492:8.14 square kilometers (3.14 sq mi)
474:
448:
422:
414:2.84 square kilometers (1.10 sq mi)
396:
370:
354:
232:
147:
88:
1290:
755:Banzu Tidal Flats formed the largest area of
570:22.6 square kilometers (8.7 sq mi)
544:10.4 square kilometers (4.0 sq mi)
518:23.8 square kilometers (9.2 sq mi)
440:16.7 square kilometers (6.4 sq mi)
388:25.6 square kilometers (9.9 sq mi)
1231:
1229:
906:
904:
902:
900:
898:
896:
894:
892:
352:
1297:
1283:
1211:(in Japanese). Tokyo: Sōjusha. p. 49.
1000:
998:
968:
966:
964:
466:1 square kilometer (0.39 sq mi)
1202:
1200:
1226:
1206:
889:
771:
689:showed strong interest in products from
2269:Tourist attractions in Chiba Prefecture
995:
961:
2256:
1324:
1197:
1189:Chiba Kenshi Hensan Shingikai (1967).
1174:Chiba Kenshi Hensan Shingikai (1967).
1159:Chiba Kenshi Hensan Shingikai (1967).
942:絶滅危惧種のカニ 東京湾で初めて発見 木更津の小櫃川河口 ハクセンシオマネキ
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2036:
2035:
1533:
1323:
1278:
220:273.2 km (105.5 sq mi)
2236:
2124:
1534:
1508:
326:The Kamegawa Dam was built near the
277:(344 meters (1,129 ft)) in the
13:
14:
2285:
1313:River systems and rivers of Japan
866:小櫃川河口干潟（おびつがわ かこうひがた）{干潟まつり実行委員会}
859:
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780:of the Obitsu River, Tokyo Bay
515:17.1 kilometers (10.6 mi)
348:
268:
1:
1514:Rivers of Hokkaido on Commons
882:
767:
676:
463:1.5 kilometers (0.93 mi)
437:15.2 kilometers (9.4 mi)
385:10.4 kilometers (6.5 mi)
120:Physical characteristics
1207:Sumihisa, Takahashi (1972).
839:
541:2.6 kilometers (1.6 mi)
411:3.6 kilometers (2.2 mi)
200: • elevation
194:, Kisarazu, Chiba Prefecture
7:
1391:Shiribeshi-Toshibetsu River
849:
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712:and the Koito River, small
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187: • location
154:
138: • location
10:
2290:
2264:Rivers of Chiba Prefecture
2242:Rivers of Japan on Commons
784:
628:
567:21 kilometers (13 mi)
489:8 kilometers (5.0 mi)
341:. The lake is the largest
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764:in the Tokyo Bay region.
716:were used on the Obitsu.
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2230:Rivers of Japan Category
941:
793:Kazusa-Kameyama Station
697:for the cultivation of
685:(1603–1868). The
328:Kazusa-Kameyama Station
212:88 km (55 mi)
1110:折木沢（おりきさわ）・猪ノ川（いのかわ）渓谷
781:
34:35.40861°N 139.89833°E
775:
746:Keiyō Industrial Zone
204:0 m (0 ft)
2084:Sumiyoshijima River
762:seaweed cultivation
39:35.40861; 139.89833
30: /
1241:2012-04-15 at the
1115:2016-03-04 at the
984:on August 25, 2007
922:on August 25, 2007
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687:Tokugawa shogunate
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143:Mount Motokiyosumi
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1805:Kiso Three Rivers
1525:
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778:Banzu Tidal Flats
673:(250–538).
626:
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445:Hasentakeda River
304:Uca lactea lactea
291:Banzu Tidal Flats
281:and empties into
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2185:Yaeyama Islands
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2107:
2064:Shinmachi River
2041:
2019:
2000:Takahashi River
1941:
1846:
1696:
1628:
1624:Yoneshiro River
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1424:Abashiri River
1420:
1418:
1416:Sea of Okhotsk
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1406:Zenibako River
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1262:2012-08-01 at
1249:
1236:木更津市歴史通り（8）ハス田
1225:
1214:
1209:Bōsō no nenrin
1196:
1181:
1166:
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1145:宇宙からみる小櫃川流域貝塚群
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1010:2013-01-19 at
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2222:
2221:
2218:
2204:
2203:Urauchi River
2201:
2199:
2196:
2194:
2191:
2190:
2188:
2186:
2182:
2176:
2173:
2171:
2168:
2166:
2163:
2161:
2158:
2156:
2155:Kikuchi River
2153:
2151:
2150:Chikugo River
2148:
2146:
2143:
2142:
2140:
2136:
2132:
2128:
2122:
2118:
2104:
2101:
2097:
2094:
2093:
2092:
2091:Yoshino River
2089:
2085:
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2080:
2077:
2075:
2072:
2070:
2067:
2066:
2065:
2062:
2060:
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2052:
2051:
2048:
2044:
2040:
2034:
2030:
2016:
2013:
2011:
2008:
2006:
2005:Takatsu River
2003:
2001:
1998:
1996:
1993:
1991:
1988:
1986:
1983:
1981:
1978:
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1968:
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1931:
1928:
1926:
1923:
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1918:
1916:
1915:Katsura River
1913:
1911:
1908:
1907:
1906:
1903:
1901:
1898:
1896:
1893:
1891:
1888:
1886:
1885:Kuzuryu River
1883:
1881:
1878:
1876:
1873:
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1868:
1866:
1863:
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1858:
1857:
1855:
1853:
1852:Kansai region
1849:
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1827:Kushida River
1825:
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1760:Kuzuryū River
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1736:
1735:Jōganji River
1733:
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1718:
1716:
1715:Shinano River
1713:
1711:
1708:
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1699:
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1692:Tsurumi River
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1642:Arakawa River
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1589:Mabechi River
1587:
1585:
1584:Koyoshi River
1582:
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1577:
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1572:
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1567:
1563:
1562:Arakawa River
1560:
1559:
1558:
1557:Abukuma River
1555:
1554:
1552:
1550:
1549:Tōhoku region
1546:
1542:
1538:
1532:
1528:
1516:
1515:
1504:
1498:
1497:Tokachi River
1495:
1493:
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1478:
1475:
1473:
1470:
1468:
1467:Kushiro River
1465:
1463:
1460:
1459:
1457:
1455:
1454:Pacific Ocean
1451:
1445:
1444:Yūbetsu River
1442:
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1352:Chitose River
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1120:(in Japanese)
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1099:(in Japanese)
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1085:(in Japanese)
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1071:(in Japanese)
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1029:(in Japanese)
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1015:(in Japanese)
1013:
1012:archive.today
1009:
1006:
1001:
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983:
979:
975:
974:"Obitsu-gawa"
969:
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965:
948:
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921:
917:
913:
912:"Obitsu-gawa"
907:
905:
903:
901:
899:
897:
895:
893:
888:
877:(in Japanese)
875:
872:
869:(in Japanese)
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803:
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747:
739:Modern period
736:
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730:
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723:
719:
715:
711:
707:
704:
700:
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692:
688:
684:
674:
672:
668:
661:
648:
645:
641:
634:Early history
621:
618:
613:
612:Shichiri-gawa
600:
599:
595:
592:
587:
575:Inokawa River
574:
573:
569:
566:
561:
548:
547:
543:
540:
535:
522:
521:
517:
514:
509:
496:
495:
491:
488:
483:
470:
469:
465:
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457:
444:
443:
439:
436:
431:
418:
417:
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410:
405:
404:Yarimizu-gawa
392:
391:
387:
384:
379:
366:
365:
361:
358:
355:
346:
344:
340:
339:Lake Kameyama
336:
333:
329:
319:
317:
313:
308:
306:
305:
300:
299:IUCN Red List
297:. In 2012 an
296:
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144:
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87:
83:
79:
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71:
67:
62:
57:
52:
46:
43:
2240:
2228:
2198:Nakama River
2193:Kokuba River
2103:Niyodo River
2074:Tamiya River
2069:Suketō River
2054:Aibiki River
2015:Yoshii River
2010:Tenjin River
1995:Sendai River
1960:Ashida River
1900:Yamato River
1880:Kumano River
1860:Choshi River
1842:Minami River
1815:Nagara River
1800:Shōnai River
1795:Yahagi River
1785:Tenryū River
1780:Sakawa River
1755:Tedori River
1730:Kurobe River
1702:Chūbu region
1677:Sumida River
1672:Sagami River
1634:Kantō region
1619:Takase River
1609:Oirase River
1599:Natori River
1594:Mogami River
1512:
1439:Tokoro River
1401:Teshio River
1381:Koetoi River
1374:Yūbari River
1339:Sea of Japan
1252:
1217:
1208:
1190:
1184:
1175:
1169:
1160:
1154:
1140:
1126:
1105:
1091:
1077:
1063:
1049:
1035:
1021:
986:. Retrieved
982:the original
977:
951:. Retrieved
946:
935:
924:. Retrieved
920:the original
915:
833:Gion Station
806:
756:
749:
742:
721:
702:
695:paddy fields
680:
671:Kofun period
667:Yayoi period
660:Gion-kaizuka
643:
640:Jōmon period
637:
419:Takeda River
325:
322:Kamegawa Dam
309:
302:
272:
228:Obitsu River
227:
225:
54:Obitsu River
15:
2175:Ōyodo River
2096:Dōzan River
1955:Asahi River
1930:Dōton River
1750:Oyabe River
1740:Jinzū River
1710:Agano River
1657:Kanda River
1614:Omono River
1604:Ōhata River
1569:Iwaki River
1386:Rumoi River
1367:Anano River
947:Chiba Nippo
830:Kururi Line
708:. Like the
523:Ōmori River
497:Ohara River
430:Takeda-gawa
367:Matsu River
362:Basin Area
349:Tributaries
335:Kururi Line
312:Koito River
295:crustaceans
269:Description
240:Obitsu-gawa
85:Native name
37: /
25:139°53′54″E
2258:Categories
2165:Mimi River
2160:Kuma River
2145:Arie River
2125:Rivers of
2079:Sako River
2037:Rivers of
1990:Saba River
1970:Hino River
1937:Yura River
1925:Kizu River
1920:Kamo River
1910:Yasu River
1905:Yodo River
1895:Muko River
1870:Kako River
1837:Kita River
1832:Miya River
1810:Kiso River
1790:Toyo River
1765:Fuji River
1725:Hime River
1720:Seki River
1687:Tone River
1682:Tama River
1667:Naka River
1662:Kuji River
1652:Fuji River
1535:Rivers of
1487:Saru River
1462:Akan River
1325:Rivers of
988:2012-02-28
926:2012-03-16
883:References
768:Recreation
714:riverboats
710:Yōrō River
706:lotus root
683:Edo period
677:Edo period
549:Sasa River
534:Ōmori-gawa
508:Ohara-gawa
378:Matsu-gawa
287:Tone River
217:Basin size
66:Obitsu Dam
22:35°24′31″N
2170:Ōno River
1985:Oze River
1980:Ōta River
1975:Hii River
1865:Ibo River
1820:Ibi River
1770:Abe River
1745:Shō River
1647:Edo River
840:Sodegaura
776:Reeds at
735:capital.
720:, as the
560:Sasa-gawa
343:reservoir
283:Tokyo Bay
255:Sodegaura
192:Tokyo Bay
1775:Ōi River
1477:Mu River
1327:Hokkaido
1260:Archived
1257:亀山湖・亀山ダム
1239:Archived
1113:Archived
1008:Archived
953:July 25,
850:Footnote
800:Kisarazu
729:Charcoal
251:Kisarazu
105:Location
97:Japanese
70:Kisarazu
2039:Shikoku
1131:猪ノ川・七里川
827:JR East
785:Kimitsu
644:kaizuka
629:History
586:Inokawa
332:JR East
330:on the
247:Kimitsu
162:Kimitsu
110:Country
2138:Kyushu
2127:Kyushu
1537:Honshu
807:renkon
751:renkon
703:renkon
647:midden
359:Length
253:, and
209:Length
181:
132:
129:Source
93:
1040:派川武田川
814:小櫃堰公園
722:nengu
450:派川武田川
263:Japan
177:Mouth
114:Japan
78:Japan
955:2012
805:The
758:nori
718:Rice
701:and
699:rice
654:祇園貝塚
622:N/A
596:N/A
356:Name
310:The
226:The
149:元清澄山
1082:大森川
1068:御腹川
1054:七曲川
1026:槍水川
1005:亀山湖
874:亀山湖
733:Edo
725:tax
619:N/A
606:七里川
593:N/A
580:猪ノ川
528:大森川
502:御腹川
476:七曲川
424:武田川
398:槍水川
234:小櫃川
90:小櫃川
2260::
1228:^
1199:^
1096:笹川
997:^
976:.
963:^
914:.
891:^
817:,
657:,
609:,
583:,
557:,
554:笹川
531:,
505:,
479:,
453:,
427:,
401:,
375:,
372:松川
261:,
257:,
249:,
237:,
164:,
160:,
152:,
76:,
72:,
68:,
1298:e
1291:t
1284:v
991:.
957:.
929:.
835:.
823:)
811:(
795:.
663:)
651:(
615:)
603:(
589:)
577:(
563:)
551:(
537:)
525:(
511:)
499:(
485:)
473:(
459:)
447:(
433:)
421:(
407:)
395:(
381:)
369:(
243:)
231:(
158:)
146:(
99:)
95:(
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