| 1．Yasu River |
| The Yasu River (野洲川, Yasu-gawa) is located in Shiga Prefecture, Japan; it is the largest river to flow into Lake Biwa. It rises from Mount Gozaisho and flows through Kōka, Konan, Rittō, Moriyama and Yasu. It forked at the lower reaches and made a delta region, but they were combined in 1979. The Tōkaidō, one of the Edo Five Routes which connected east and west Japan during the Edo period, paralleled the river. Post towns along the river included Tsuchiyama-juku, Minakuchi-juku and Ishibe-juku. The Yasu River also crossed the Nakasendō, another one of the Edo Five Routes, separating Moriyama-juku and Musa-juku. |
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| 2．Ane River |
| The Ane River (Japanese: 姉川, romanized: Anegawa) is a river that flows through the northern part of Shiga Prefecture, Japan, entering Lake Biwa at the city of Nagahama.[1] 35°23′17″N 136°12′54″E / 35.3880°N 136.2151°E / 35.3880; 136.2151 |
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| 3．Inukami River |
| The Inukami River (犬上川, Inukami-gawa) has its source in the Suzuka Mountains in Shiga Prefecture, Japan. During the Edo period, Takamiya-juku, a post station along the Nakasendō, sat on the banks of the river in Hikone.[1] The Kitaya River (北谷川 Kitaya-gawa) and the Minamiya River (南谷川 Minamiya-gawa), literally the "North Valley" and "South Valley" rivers, originate in the Suzuka Mountains. The two rivers merge as they flow into Taga. The river's central portion spreads out into an alluvial fan as it flows into a plain. When the river reaches Hikone, it flows into Lake Biwa. |
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