Sentences with phrase «water runoff over»
The study examined what is likely to be seen in terms of precipitation, snowpack accumulation and water runoff over the next century, versus the same data for the years from 1976 and 2005.
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In addition, by paving over previously open space — or farming previously reserved lands — communities in these watersheds contribute to record high waters through increased runoff.
This extra runoff is why waters in Cedar Rapids, Iowa, for example, rose to a record 30 - plus feet (over nine meters).
It is thought the reduced runoff is achieved because Festulolium's intense initial root growth and subsequent rapid turn - over, especially at depth, allows more water to be retained within the soil.
Over two years of field experiments in the south west the team demonstrated that the hybrid, named Festulolium, reduced water runoff from agricultural grassland by up to 51 per cent compared to a leading UK nationally - recommended perennial ryegrass cultivar and by 43 per cent compared to meadow fescue.
«Runoff» refers to the water that flows over soil's surface.
Each year, a huge amount of water evaporates from the ocean, then falls over land as rain or snow, and returns to the ocean through runoff and river flows.
The most common wells, called Class 5, are a sort of catch - all for everything left over from the other categories, including storm - water runoff from gas stations.
The team also compared the ice loss up until the mid-1980s to that observed by satellites over roughly the last decade and found that today the rate of ice loss is twice the 20th century average, mostly because of increased water runoff from the ice sheet's surface.
Across the state of California, over 300 systems carry water that has been contaminated by agricultural runoff or naturally occurring pollutants like arsenic and uranium.
By mid-century, annual average river runoff and water availability are projected to increase by 10 - 40 % at high latitudes and in some wet tropical areas, and decrease by 10 - 30 % over some dry regions at mid-latitudes and in the dry tropics, some of which are presently water - stressed areas.
The main objectives of this study are to better understand the characteristics of the SR through an in - depth assessment of the contemporary water balance when the basin was intensively monitored (1996 — 2005), to use standardized runoff to select the best timescale to compute the Standard Precipitation (SPI) and Standard Precipitation Evaporation Indices (SPEI) to estimate trends in water availability over 1919 to 2005.
A breakwater built in the 1940s to protect the Long Beach port «traps urban runoff, making the city's water quality among the poorest in the state» and exhaust from the many vehicles operating, and idling, in the harbor area hangs over nearby communities.
Runoff from chemical inputs and CAFO waste pollutes our water and contributes to global warming; monoculture — planting a single crop over a large area year after year — depletes soil and reduces biodiversity; overuse of antibiotics in meat production threatens our ability to fight human disease.