This dataset concerns watershed-scale hydrology, erosion, and weathering in serpentinite watersheds in southwestern Puerto Rico. The dataset comprises watershed locations and physical characteristics, wet and dry season water quality data, sediment geochemistry and derived weathering indices, estimated specific discharges and solute fluxes, and cosmogenic ³⁶Cl-derived erosion rates in 15 watersheds. The dataset was collected between 2020 and 2022 to study the factors that control ultramafic rock weathering rates in the tropics.

In addition, a compilation of discharge data from USGS stream gauges in Puerto Rico and watershed-averaged precipitation rates in the gauged catchments are included. These data are used to generate a rainfall-runoff relationship to estimate specific discharge in the study watersheds.

The dataset is presented in 9 tables that are included in a single excel file (.xlsx). In addition, GNU Octave code packages to determine watershed-averaged nucleonic scaling factors, and to calculate erosion rates from Cl isotope ratios, target chemistries, and watershed-averaged scaling factors are included. This dataset was produced with support from NSF-EAR-2011358 and NSF-EAR-2011342. 

Researchers should cite this work as follows:

• Moore, A. K.; Méndez, K.; Hughes, K. S.; Granger, D. (2024). Serpentinite weathering in Puerto Rico. Purdue University Research Repository. doi:10.4231/BY5R-GG48

  BibTex | EndNote

1. Cosmogenic nuclides
2. EAPS (Dept)
3. Earth system
4. Erosion
5. Puerto Rico
6. Serpentinite
7. Ultramafic rock weathering