During this past research season the scientists recorded unprecedented lake levels caused by higher glacial runoff .
科学家们在上一个科考季发现，受到高处冰川径流的影响，这里的湖泊水位上升到了前所未有的水平。
Phosphorus pollution comes from multiple sources , including fertilizer and manure that enter the water through runoff .
磷污染有多个来源，包括化肥和粪肥通过径流进入水源。
Differences in brightness in coastal area waters may be due to other factors , including freshwater runoff , strong currents , and water depth and clarity .
沿海水域的亮度差异可能是由于其他因素所导致，包括淡水径流，强劲的水流，水的深度以及清澈度。
Farmers then began conserving water by moving to drip irrigation and by leveling their fields with lasers to minimize wasteful runoff .
These opinions recognize that current farming methods bring serious environmental problems involving water supplies , fertilizer runoff and energy use .
