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Acid rain is rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH).Most water, including drinking water, has a neutral pH that exists between 6.5 and 8.5, but acid rain has a pH level lower than this and ranges from 4–5 on average.
Diagram depicting the sources and cycles of acid rain precipitation. Freshwater acidification occurs when acidic inputs enter a body of fresh water through the weathering of rocks, invasion of acidifying gas (e.g. carbon dioxide), or by the reduction of acid anions, like sulfate and nitrate within a lake, pond, or reservoir. [1]
The Acid Rain Program is a market-based initiative taken by the United States Environmental Protection Agency in an effort to reduce overall atmospheric levels of sulfur dioxide and nitrogen oxides, which cause acid rain. [1]
Topsoil runoff from farm, central Iowa (2011). Water pollution in the United States is a growing problem that became critical in the 19th century with the development of mechanized agriculture, mining, and manufacturing industries—although laws and regulations introduced in the late 20th century have improved water quality in many water bodies. [1]
The lack of rain has caused North Jersey's drinking water reservoirs to dip below typical levels for this time of year after being overly full due to frequent rain earlier this year. Story ...
Saturday evening has a 90% chance of rain while Sunday during the day has a 70% chance of showers. Kate Kealey is a general assignment reporter for the Des Moines Register.
In United States federal environmental legislation, the National Acid Precipitation Assessment Program (NAPAP) was authorized by Congress under the Acid Precipitation Act of 1980 (P.L. 96-294, Title VII) because of concern that acidic deposition might contribute to adverse effects on aquatic systems; agriculture; forests; fish; wildlife and natural ecosystems; materials such as metals, wood ...
Rain is never ideal during the Iowa State Fair, but the first full week could have some showers. Monday could see some rain between 1 p.m. and 4 p.m. in Des Moines.