01 / Urami River
To reopen the lakes' outlet,they cut 36 m down through a hill.

An earthquake in 1662 blocked the river that had been the outlet of the Mikata Five Lakes (三方五湖). About 20 days later the Obama domain began cutting through Urami Pass (浦見峠), and water flowed through the following year. From the top of the pass to the channel bed is about 36 m, and the channel is about 236 m long; the work took some 225,000 person-days. New rice fields appeared on the drained shores, and two new villages, Ikura (生倉) and Narude (成出), were founded.
- Cut about 36 m deep
- About 236 m long
- Two new villages

