Sentences with phrase «maximum water discharges»

Villarini and his colleagues conducted their study by relating maximum water discharges recorded by USGS stream gauges with the passage of the storms over the Midwest and eastern states.

Not exact matches

Most reported cases have been ascribed to the use of contaminated well water for preparation of infant formula.1 — 3 Fifteen million families in the United States obtain their drinking water from unregulated wells.4 In a survey of 5500 private water supplies from 9 Midwestern states, 13 % of the wells were found to have nitrate concentrations > 10 mg / L or 10 ppm nitrate nitrogen, 5 the federal maximum contaminant level.6 It is estimated that 2 million families drink water from private wells that fail to meet the federal drinking - water standard for nitrate, and 40000 infants younger than 6 months live in homes that have nitrate - contaminated water supplies.4 In urban areas, municipal wastewater - treatment discharges (a source of nutrients) on surrounding farmland aggravate the problem.7

With the Antarctic sea ice maximum observed this year I wondered if it was due to the sub-surface melt lakes discharging fresh super-chilled water out under the ice sheets.