Is it possible to slow the scroll speed from a certain section of the page?

I have a single page project, where when scrolling down, it will make a drill animation piercing the layers of the earth, until at last, when drilling the water, the screen automatically rolls to the top. It happens, that when I get to the water part, I want to slow down the scrolling, because it's bothering me the way it happens.

HTML

<header id="topo">
</header>
<div id="content">
    <div id="broca">
    </div>
</div>
<footer id="water">    
</footer>

CSS

header, footer{
display:block;
height:700px;
background:red;
width:100%;
}
#content{
display:block;
width:100%;
height:1500px;
background:blue;
}
#broca{
width:50px;
height:0;
background:#000;
max-height:1500px;
}

JQuery

var counter = 0;
$(function(){
    $(window).scroll(function() {
        var $broca = $('#broca');
        var st = $(this).scrollTop();
        if (st > $broca.height()){
            $broca.clearQueue().animate({
                height: st } , 500);
        }


$(window).scroll(function() {
       if($(window).scrollTop() + $(window).height() > $(document).height() - 100) {
               if (counter == 0){
                   counter++;
               $("html, body").animate({ scrollTop: 0 }, 1500);
        }
    }
});

        if( st == 0 ) {

        } else {
            $broca.show();
        }
    }).scroll();
})

JSFiddle