Skip to Main Content
The chemical composition of atmospheric precipitation from selected stations in MichiganAuthor(s): Curtis J. Richardson; George E. Merva
Source: In: Dochinger, L. S.; Seliga, T. A., eds. Proceedings of the first international symposium on acid precipitation and the forest ecosystem; Gen. Tech. Rep. NE-23. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 321-332
Publication Series: General Technical Report (GTR)
Station: Northeastern Research Station
PDF: Download Publication (453.51 KB)
DescriptionThe pH and amount of rainfall from over 60 selected stations throughout northern and lower Michigan was determined from September 1972 to December 1974. Precipitation pH was determined for each station by calibrated electrode meters. The seasonal weighted average and median pH from all stations in the study was 5.0 and 6.3, respectively. Daily readings from stations throughout Michigan indicate that pH is dependent on the amount of rainfall and that variations in it are often locally controlled. Collectively the pH values suggest carbonic acid control for most of the state. Annual median pH varied from a high of 8.45 at Dimondale, a station located 1.5 km from a concrete tile plant in central Michigan to 4.65 at Vassar, a small town located east of several industrial centers in the thumb region of the state. A comparison of annual nutrient loading for NO3-1, SO4-2, Cl-1, PO4-3, Ca++, Mg++, Na+, K+, and pH of rainwater from selected stations revealed that the eastern U.S. stations reporting pH's < 4.02 have similar loadings for NO3 but twice the SO4 input found for rural areas of Michigan.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationRichardson, Curtis J.; Merva, George E. 1976. The chemical composition of atmospheric precipitation from selected stations in Michigan. In: Dochinger, L. S.; Seliga, T. A., eds. Proceedings of the first international symposium on acid precipitation and the forest ecosystem; Gen. Tech. Rep. NE-23. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 321-332
- Nutrient content of precipitation over Iowa
- Disturbance and long-term patterns of rainfall and throughfall nutrient fluxes in a subtropical wet forest in Puerto Rico
- Evidence for multiple hydrogen-ion donor systems in rain
XML: View XML