翻刻
【右丁 文字なし】
【左丁】
一私在所信州松代先達て御届申上候通にて更科郡山平林村ノ内岩倉山拔崩犀川へ
押埋り弐ケ所 堰(セキ)留追々数十丈堪溜候処一両日前より水溜り候得共下之方より堰留
候場所へ水乗候に付末弐丈余も有之候処俄押破候と相見同十三日夕七ツ時過
右山之方大に鳴動致引続瀬鳴之音之如く相聞候所一時に激(ゲキ)水右川筋ヘ
押出し忽左右之古堤押切或は乗越防方も届兼候旨川方役人共より追々
致注進候所間も無之川中嶋数ケ村一円に水押千曲川ヘ流込逆流既に居
城際迄水多く押上暮時頃ヨリ夜九ツ時頃迄に千曲川平水より二丈計
相増川中島は勿論高井郡水内郡之内川附村々水中に相成瀬筋相立
候様相見へ候処も数ケ所有之作物泥冠候は勿論押堀#1候所夥敷可有
之候へ共難見極夜半過に及ひ瀬水丈も相立候様子の処暁に及ひ
次第に引水に相成申候兼て村方之者共水防之手当申付置候得とも
現代語訳
【右丁 記載なし】
【左丁】
私の在所である信州松代について、先だってご報告申し上げた通り、更科郡山平林村のうち岩倉山が崩落して犀川に押し埋まり、二箇所で堰き止められ、次第に数十丈にわたって水が溜まっておりました。一両日前より水が溜まってはおりましたが、下方の堰き止め箇所へ水が乗り上げ、末端では二丈余りの高さにもなっておりましたところ、突然それが押し破られた模様で、同十三日の夕方七ツ時過ぎ(午後四時過ぎ頃)、その山の方向から大きな鳴動が起こり、引き続いて瀬の鳴る音のように聞こえたかと思うと、たちまち激流が当該川筋へと押し出し、忽ちのうちに左右の古堤を押し切り、あるいは乗り越え、防ぎようもないとの旨を、川方役人たちから次々と注進がありました。間もなく、川中島の数か村が一円に浸水し、千曲川へと流れ込んで逆流し、すでに居城の際(きわ)まで水が多く押し上げてきました。暮れ時頃から夜九ツ時頃(深夜零時頃)までに、千曲川は平水より二丈ほど増水し、川中島はもちろん、高井郡・水内郡のうち川沿いの村々が水中に没し、瀬筋が立って(水流の方向が)見えるようなところも数か所ありました。作物が泥をかぶったのはもちろんのこと、押し掘られた(浸食された)箇所も夥しくあるものと思われますが、夜のため見極めが難しく、夜半を過ぎてもなお水位が続いておりましたが、夜明けに及んで次第に水が引いてまいりました。かねてより村方の者たちに水防の手当てを申し付けておきましたものの、(以下次ページへ続く)
英語訳
[Right folio: No text]
[Left folio]
Regarding my domain of Matsushiro in Shinano Province, as previously reported to you, within Yamahirabayashi Village in Sarashina District, Iwakura Mountain collapsed and fell into the Sai River, blocking it at two locations. The water gradually accumulated to a depth of several tens of jō. Although water had been pooling for a day or two, it rose up over the lower of the two blocked sections, reaching a height of over two jō at the far end, and then suddenly appeared to burst through the barrier. On the evening of the 13th, just past the Hour of the Rooster (shortly after 4:00 p.m.), a great rumbling arose from the direction of the mountain, followed by a sound like the roaring of rapids, whereupon a violent torrent suddenly rushed into the river channel, instantly breaching the old embankments on both sides, or overtopping them, making it impossible to mount any defense — so the river officials reported to us in rapid succession. Before long, several villages on Kawanakajima were entirely inundated, the waters poured into the Chikuma River and flowed back upstream, and had already pushed up as far as the edge of the castle. From around dusk until about the Hour of the Rat (around midnight), the Chikuma River rose approximately two jō above its normal level. Not only Kawanakajima, but also the riverside villages in Takai District and Minnai District were submerged, with several locations where the current's path could be discerned. It goes without saying that crops were covered in mud, and there must have been extensive erosion and scouring, though the full extent was difficult to assess in the darkness. Although the water level continued past midnight, it gradually began to recede by dawn. Although we had previously instructed village people to prepare flood defenses, [continued on next page...]