On a hot Sunday in 1999 three miners find a thin, triangular stone in a muddy Brazilian river.

FORBES: Fracture Lines

Divers are still searching the muddy Mississippi River, looking for those lost when the interstate bridge in Minneapolis collapsed last week.

NPR: Cleanup Begins at Minneapolis' Collapsed Bridge

The second reason is these fish occur in an extremely large, deep, muddy, river and you will never see them unless you can dedicate your life to trying to find them!

CNN: Keeping watch over the 'megafishes'

Inhabitants will zip from one urban center to another in an hour or less, a real feat because the area is separated by the wide mouth of the muddy Pearl River.

FORBES: A City of 260 Million. Where Else But China?

For now an electrified barrier lies between the carp and the lake, but a serious proposal has been advanced to re-reverse the river, sever it from the Big Muddy and isolate Lake Michigan from the voracious fish.

FORBES: Currents Of The U.S. Economy Run In Chicago River's Twisted History

Those glorious inundations moved massive quantities of sediment through the Grand Canyon, wiping the slate dirty, and making a muddy mess of silt and muck that would make modern river rafters cringe.

ECONOMIST: Flooding the Grand Canyon

In summer, hikers follow a muddy footpath that parallels the creek, but winter skiers slide directly up the frozen snow-encrusted river in eerie silence.

BBC: Back-country skiing in Canada��s Jasper National Park