Water quality issues also create risk for companies, from stricter pollution standards on their own effluent to other entities polluting water upstream, requiring them to clean up water prior to use.
The Aral Sea was dried up by upstream diversions of water for vast areas of irrigation.
Further complicating the matter is the use of river water upstream for agricultural irrigation.
We've looked at whether we can divert that water upstream to flood farmland and divert it away... but we don't want to transfer the problem somewhere else.
The defences include a flood water storage area, upstream of the city, which can hold up to 1.5 million cubic metres of water.
Advocates for the rapids have suggested the installation of an inflatable dam upstream that could better regulate water levels around the season to insure better rowing conditions.
But scientists have detected Asian carp DNA in dozens of water samples collected farther upstream, some just a few miles from Lake Michigan.
Water held in the reservoir, upstream of the city on the River Laver at Birkby Nab farm, will gradually drain away downstream.
Paying for greenery upstream turns out to be cheaper than cleaning up water downstream after it has been fouled.
Striped bass are a big marine fish concern of the DEC not only because they are a prized game fish for recreational anglers, but also because they are full of PCBs, thanks to the General Electric plants upstream on the Hudson that pumped the contaminants into the water for 30 years until 1976.
Meteorologist Jeff Masters notes today that although the storm surge has pushed salt water from the Gulf as far as 314 miles upstream, all the rain expected to fall north of New Orleans in the coming days will help raise near record-low water levels on the river and flush the salt water back out.
FORBES: Levee Breach Floods 800 Homes In Louisiana, And Other Notes From Isaac's Landfall
As an upstream state, it believes it is the rightful owner of all water flowing from its territory and is doggedly seeking payment for the water used by Uzbekistan.
Farmers, especially cotton and rice growers in those upstream states, account for 83% of the basin's consumed water.
The effects of these demented policies have been exacerbated in recent years by Turkey's diversion of Syria's main water source, the Euphrates River, through the construction of dams upstream, and by two years of unrelenting drought.
Reaching a slipway guarded on their approach by a fence running down into the water, some of the men plunged into the river and began swimming upstream.
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