第150章:治理太湖(2 / 2)

大明勋二代 八百楚 1546 字 2022-04-25

况钟一边说一边手沿着太湖水系演示。

张忠等人闻言纷纷颔首。

况钟继续说道:

“至于太湖泛滥便因下游水路不畅。”

“夏禹奉舜帝姚重华之命在太湖治理水患,开凿了三条主要水道,东江、娄江、吴淞江,沟通了太湖与大海的渠道,将洪水疏导入海。”

“这就是司马迁在《史记》中记载的’禹治水于吴,通渠三江五湖’。”

“只可惜这三条主要水道相继失去了应有的功能。”况钟叹气道。

“不错!”

阮安也颇熟悉水利,闻言接口道:

“隋唐之时东江、娄江相继湮灭,而到了北宋初期,吴淞江开始淤塞,东南排水渐堵,太湖洪水经阳澄、淀泖腹部农田弥漫盈溢,然后入海。”

“加之大面积拓垦荒地、围垦造田而阻塞水路,塘浦大圩逐步分化为浜泾小圩,洪涝灾害日趋频繁。”

“到了本朝,太宗皇帝才派遣时任户部尚书的夏元吉老大人前来治理太湖。”

“嗯!”

“阮公公所言极是!”周忱听到此处这才插话道“我想治理太湖,便查过本朝立国以来,对于太湖治理的过往,发现夏大人的办法十分不错。”

“请巡抚大人详细说明一番!”况钟笑道。

周忱微微颔首这才继续说道:

“夏大人在《苏松水利疏》中分析了当时本区的水道形势,认为治水关键是疏浚下游河道,使洪水畅流入海。”

“但以往泄水干道吴淞江已严重淤塞,从吴江长桥至夏驾浦一百二十余里的上游段虽可通水,但多有浅狭之处。”

“而自夏驾浦至上海县南跄浦口(吴淞江入海旧口,在今吴淞口之南)的一百三十余里则已是’茭芦丛生、已成平陆’。”

“重新使之通畅,则工费浩大,不如上段着重疏浚东北入江的嘉定县刘家港和常熟县白茆港,下段着重疏浚直通南跄口的范家浜。”

“此外在河口设闸,控制泄水和涨潮,再修理加固围堤,水灾当可得到控制。”

周忱一边说一边将手指在水文图上移动,向张忠等人解释夏元吉治理太湖的思路。

“这的确是个妙策!”阮安向来对这些专业性强的东西有极强的理解力,当周忱说完,他便颔首道:

“范家浜一开,下游通畅,黄浦总汇杭嘉之水,又有淀山泖荡诸水以建瓴之势,’从上灌之,是以流皆清驶,足经敌潮,虽有浑浊,不能淤也’,所以黄浦得以自然扩大。”

张忠听到此处,脑海中不由出现“黄浦夺淞”。

所谓的“黄浦夺淞”乃是因为疏通改道后的黄浦江,不论是从宽度还是水量上,都远超吴淞江,从而成为太湖东流入海的主要渠道。

同时,原本作为太湖入海主要渠道的吴淞江则因为被黄浦江夺走了主要水量和入海口,反而变成了黄浦江的支流。

“不过夏元吉治理太湖那是在永乐元年,时间不过二十多年,黄浦江还没有冲成深广大河,如今只能说为’黄浦夺淞’奠定了基础。”张忠暗想道:

“好像后来海瑞任应天巡抚时也曾治理过太湖的,他是怎样做的?”

张忠开始开动大脑回忆起前世看过的相关记载。

“我觉得夏大人的方法便很好,我们只需沿着他的思路,将沿线的河道再疏浚一下,最重要的便是要让黄浦尽快壮大起来,以便承担起太湖下游泄洪的功能。”阮安徐徐说道。

周忱闻言在水文图上细细打量良久,方才微微颔首。

“对了,海瑞是继续疏通了吴淞江。”张忠想到此处不由双眼一亮,走到水文图前,说道:

“继续拓宽黄浦江自然很好,不过吴淞江作为太湖泄洪的通道,虽然作用减弱了,但也不可放弃继续疏浚吴淞江。”

“永春伯,有何办法呢?”众人闻言十分诧异张忠几时懂水利的,不过况钟还是试着问道。

“可以在横潦泾金汇港口东侧修坝建闸港,使上游来水大多北折改走黄浦,冲刷了吴淞江下游河床,一举解决吴淞江淤积问题。”张忠点着水文图道。

“此法可行!”

阮安闻言颔首道。

“如此双管齐下倒是更保险一些。”周忱微笑道。

“诸位还有要补充的吗?”周忱环视众人道。

张忠等人思忖片刻后都摇头相对。

“那好,我便将今日,我们所议之策整理一番,然后上奏陛下,请求治理太湖。”周忱笑道。

“若太湖得以治理成功,将是利国利民的好事,福泽子孙后代呀!”况钟感慨道。

众人闻言纷纷颔首不及。

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