Revision for U.S. Geological Survey data release: Brooks, T.W., Eagle, M., Kroeger, K.D., Mann, A.G., Wang, Z.A., Ganju, N.K., O'Keefe Suttles, J.A., Brosnahan, S.M., Chu, S.N., Song, S., Pohlman, J.W., Casso, M., Tamborski, J.J., Morkeski, K., Carey, J.C., Ganguli, P.M., Williams, O.L., and Kurtz, A.C., 2021, Geochemical data supporting investigation of solute and particle cycling and fluxes from two tidal wetlands on the south shore of Cape Cod, Massachusetts, 2012-19 (ver. 2.0, October 2022): U.S. Geological Survey data release, https://doi.org/10.5066/P9MXLUZ1. --------------------------------------- Version 1 posted online February 16, 2021 --------------------------------------- Revised and reposted, October 2022 as version 2.0 Changes in version 2.0: 1) One data file was modified: "Porewater_GeochemicalData_SageLotPond_GreatPond.csv". This data file has been modified to exclude 81 porewater alkalinity measurements from 2014 (cells X2: X82, attribute element TotalAlkalinity_ueqperL). These samples were evaluated in 2022 and the zinc acetate preservation method was determined to have greatly reduced measured porewater alkalinity, resulting in erroneous measurements. 2) The metadata was updated as follows: The minimum value for alkalinity measurements in porewater was updated in "DataDictionary_SageLotPond_GreatPond.csv", and in the entity and attribute section of the metadata file. The edition, title, and other citation details were updated in the metadata file. A new process step was added which documents the changes for version 2.0.